hybridfree/eevblog-posts huggingface dataset:
Automatic 10-ports SCART switch review - Page 1
Forum section: electronics / general

author: VEGETA
author_rank: Super Contributor
timestamp: August 13, 2022, 09:38:20 pm
content: Hellothere is the review:https://youtu.be/3oDhDZKFzc0I hope people benefit from this as I did, I really recommend this one as shown in the technical review.get it here:https://www.aliexpress.com/item/1005004300273099.html-> it is available from other sources as well.please share the video to everyone... we need more testers of new retro gaming devices which are affordable.

author: madires
author_rank: Super Contributor
timestamp: August 24, 2022, 01:46:20 pm
content: Over here we're glad that SCART is mostly gone. No more trouble with fiddly SCART plugs and their flimsy contacts. They could be better if the design would incorporate a retaining clip or screws like D-Sub.

author: david77
author_rank: Frequent Contributor
timestamp: August 24, 2022, 02:28:01 pm
content: SCART...good riddance. The crappiest consumer plug design ever. The US got it right: Just use RCA plugs

author: VEGETA
author_rank: Super Contributor
timestamp: August 25, 2022, 08:21:49 am
content: The retro gaming community agrees with you in terms of hating SCART connector for being bulky and so on. However, it is kinda necessity now since all retro gaming community use it for a long time and generally for RGB based system it is the only option.VGA requires H and V separate syncs while SCART allows Csync, composite sync, or sync on luma on its pin 20 which is what most people and their equipment use.yes you can use a DSub connector but the equipment won't be compatible and the whole retro gaming infrastructure won't as well, so scart is the way to go.using a scart switch like this one reliefs you from keep plugging and unplugging your cables. you can set them up once and will be ok. I showed in the video that this switch is reliable and has automatic switching where I just power on my console and it gets to the screen. I paired it with other stuff like RGB to component converter and so on.As for RCA, they are reliable and also BNC but for rgb you would need 4 RCA cables at least: R G B and Csync, plus 2 for audio would result in 6! no system at all use this standard for RGB.. well PVMs use a similar setup via BNC but these are not as wide spread as normal CRTs and even modern TVs.for me, I prefer something like a DIN connector. it is really small and reliable with enough connectors for everything.you can't satisfy all people... that we can agree on.even digital video such as HDMI connector people hate it and prefer DisplayPort for having locking pins...
Don't Stay Under Trees During Thunderstorms - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: August 11, 2022, 06:48:53 pm
content: https://www.youtube.com/shorts/j8igbs21veM

author: james_s
author_rank: Super Contributor
timestamp: August 11, 2022, 10:12:25 pm
content: This is common advice, I remember being told when I was a little kid if a thunderstorm rolls in to get away from any trees or other tall objects and get indoors if possible. Quite an impressive picture.

author: jpanhalt
author_rank: Super Contributor
timestamp: August 11, 2022, 11:16:03 pm
content: Lightning is amazing and unpredictable for what it does. A few weeks ago, lightning apparently hit a medium size tree (10" trunk) about 50 ft from my home. It destroyed the wall wart supply to my router and only the part of the router that allowed connection to the modem. I am on fiber optic, but my underground mains supply was nearby. My PC would connect to the router just fine. That was a perplexing problem. A few days later, I saw some long splinters of wood in the yard. I didn't immediately associate the two events, but figured the tree was simply dead from some other reason. After cutting it down, the top 15 to 20 feet were normal. From there on down, the bark was separated from the rest of the trunk. It just peeled off like the shell of a hard-boiled egg.My home is in a small clearing in the middle of a forest. It was just that tree's bad luck. (And my good luck.) Some people survive lightning strikes, many don't. I don't mess with lightning if I can possibly avoid it.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: August 11, 2022, 11:40:39 pm
content: Apparently another risk is that the sap can explode, sending bark shrapnel flying.

author: james_s
author_rank: Super Contributor
timestamp: August 11, 2022, 11:57:50 pm
content: I thought it was mostly the water in the tree that would flash vaporize and cause the tree to explode. I suppose sap is mostly water.

author: jpanhalt
author_rank: Super Contributor
timestamp: August 12, 2022, 12:16:08 am
content: That's what I assumed loosened the bark. Some of the splinters from higher up were 15' long. There are lots of trees here. This one caught my attention as it was so close to the house -- right off my front porch. It also leaned toward the house, so felling it was a bit tricky. Fortunately, it went right where I wanted it to go.
35V-5A Adjustable Switching Power Supply (DC to DC Buck Converter) - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: February 28, 2023, 01:01:56 pm
content: A DC-to-DC converter is one of the most commonly used circuits in electronics, especially in power supply applications. There are three major types of DC-to-DC converters (non-isolated): Buck, Boost, and Buck-Boost. Sometimes a buck converter is also called a step-down converter and a boost converter is also called a step-up converter.In this article/video, I introduce an adjustable 5A DC-to-DC converter circuit that uses an advanced chip, made by Texas Instruments, which is TPS5450. It’s a high-frequency and efficient buck converter chip. I have followed several PCB design rules to ensure low noise, low EMI, and high stability of the output voltage.Please watch the video completely, from the start to the end. I've disclosed the design, provided an article, and shared several PCB designing tricks with you😉 I designed this board using Altium Designer. The PCB has been Fabricated by PCBWay. if you have Altium, I can share the original PCB project with you using Altium-365.😊

author: dobsonr741
author_rank: Frequent Contributor
timestamp: February 28, 2023, 03:03:20 pm
content: Connection of C2, C3, C4 to GND could have used more copper than a single via just touching the copper island - maybe a triple stitch down, as D1 demonstrated on the PCB.

author: mariush
author_rank: Super Contributor
timestamp: February 28, 2023, 05:14:07 pm
content: yeah, more vias... and you could have used better capacitors, ex polymer (solid) capacitors instead of those average electrolytics that aren't even "optimized" for low esr, if I'm looking at the right datasheet.The tps5040 datasheet recommends for the typical application example in datasheet output capacitors with ESR under 40mOhm, so that the output will have low output ripple...I don't even like those surface mount, rather have through hole capacitors.Wouldn't trust octopart over the datasheet data, no guarantee 31v is the maximum output voltage and it's a weird value. look at maximum duty cycle and other things to figure out max voltage.

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: March 01, 2023, 06:24:33 pm
content: Quote31V is correct, I could not find it in the datasheet, but TI mentioned this on the product page:https://www.ti.com/product/TPS5450
High Precision Digital AC Energy Meter Circuit [Voltage, Current, Power, KWh] - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: July 31, 2022, 11:50:40 am
content: Dealing with the 220V-AC mains voltage and measuring the AC loads' true power, voltage, and current parameters are always considered a big challenge for electronic designers, both in circuit design and calculations. The situation gets more complex when we deal with the inductive loads because inductive loads alter the sine-wave shape of the AC signal (resistive loads don’t).In this article/video, I introduced a circuit that can measure the AC voltage, RMS current, active power, apparent power, power factor, and energy consumption (KWh) of the loads. I used an Arduino-Nano board as a processor to make this more educational-friendly and attractive even for beginners. The device independently measures the aforementioned parameters and displays the results on a 4*20 LCD. The measurement error rate is around 0.5% or lower.To design the schematic and PCB, I used Altium designer 22 and installed the missing component libraries using Altium’s manufacturer part search. The Octopart website allowed me to quickly gather information about the components and make a BOM for the project. To get high-quality fabricated boards, I sent the Gerber files to PCBWay and used the Siglent SDM3045X benchtop multimeter to calibrate the board.It's a cool device to be used in everyday electronics, so let’s get started :-)
SomeGuy's Garage - YouTube Channel - Page 1
Forum section: electronics / general

author: SomeGuy
author_rank: Contributor
timestamp: January 22, 2022, 03:00:14 am
content: I just started my channel here:https://www.youtube.com/channel/UCBwA36YGRBRyjJd-ZZM7qLwCovering more garage stuff, so fabrication, mechanical repairs, vehicles, etc....though I've ended up starting with a bit of simple electronics stuff for an RC project I'm working on and a couple Siglent videos.Check it out

author: SomeGuy
author_rank: Contributor
timestamp: January 24, 2022, 04:12:25 am
content: Quote from: charlesmox1 on January 23, 2022, 06:38:27 amThanksI'm just doing it to learn more skills than really outright success (it will never replace the day job) but it's a nice way to share the hobby.

author: manzieza
author_rank: Newbie
timestamp: April 13, 2022, 12:23:16 am
content: Nice Channel. I subscribe

author: SomeGuy
author_rank: Contributor
timestamp: July 24, 2022, 06:47:22 pm
content: Here's a bit of fun you guys might appreciate:https://youtu.be/MMUk-rdwxWQ
Simple way to manufacture PCBs at home - Page 1
Forum section: electronics / general

author: electroagenda
author_rank: Newbie
timestamp: July 27, 2022, 10:04:57 pm
content: It is possible to manufacture PCBs at home.The procedure requires common items like a laser printer and an iron.A bit more specific, it also requires special paper and some chemicals.The full guide is provided here:https://electroagenda.com/en/homemade-pcb-manufacturing/
A Standalone Full Bridge DC Motor Driver - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: October 26, 2022, 09:58:24 am
content: The Full-Bridge (H-Bridge) is the most popular driver circuit to control brushed DC motors. The main advantage of a full bridge driver is the ability to change the rotation direction of the motor, without manually reversing the supply wires. I’ve already published the Half-bridge and H-bridge driver circuits before; however, I was receiving many requests and comments for a standalone H-Bridge driver to control the DC motors, without using any external board or a controller.Therefore, I introduced a cheap, compact, and standalone H-Bridge DC motor driver that can be embedded in a variety of mechatronic devices. A cheap ATTiny13 microcontroller controls everything and I used the Arduino IDE to write the microcontroller code. All components, except for the connectors, are SMD.The motor can be controlled in three modes: Forward, Stop, and Reverse. The user can adjust the rotation speed of the motor separately in the forward or reverse direction, using two panel-mounting potentiometers. The low ON-Resistance of the Mosfets allows you to use this circuit in high currents.To design the schematic and PCB, I used Altium Designer 22. The fast component search engine (octopart) allowed me to quickly collect the components’ data and generate the BOM as well. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. To test the driver board, I disassembled an electric toy car and used its powerful 775 DC motor (plus the gearbox).It’s a cool experience, just build one and have fun!

author: voltsandjolts
author_rank: Unknown
timestamp: October 26, 2022, 10:32:55 am
content: I'm curious about the Altium sponsorship, which I've seen on quite a few YT videos.Did you contact Altium to obtain sponsorship, or did they contact you through YT?What is the sponsorship? A free perpetual Altium license, or time limited as long as you produce videos, or something else?Thanks
36V-3A Adjustable Efficient DC to DC Step-Down (Buck) Converter - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: June 29, 2022, 08:46:00 am
content: A DC-to-DC converter is one of the most commonly used circuit topologies in electronics, especially in power supply applications. There are three major types of DC-to-DC converters (non-isolated): Buck, Boost, and Buck-Boost. Sometimes a buck converter is also called a step-down converter and a boost converter is also called a step-up converter.In this article/video, I introduce an adjustable buck converter circuit that uses an advanced converter chip, made by Texas Instruments, which is TPS5430. It’s a high-frequency and 95% efficient chip. In the PCB layout design of such converters, several PCB design rules should be followed, otherwise, the circuit might generate a significant amount of radiated emission and suffer output instability.To design the schematic and PCB, I used Altium Designer 22 and used the manufacturer part search feature to directly import the components into the PCB project. Then, generated the BOM list using the free OctoPart services. To get high-quality fabricated boards, I sent the Gerbers to PCBWay and tested the circuit for output stability and noise, using a DC load, A multimeter, and an oscilloscope. Soon later, I will also perform the step-response test and demonstrate the results. Stay connected!SpecificationsInput Voltage: 5.5V to 36VOutput Voltage: 1.22Vmin (variable)Output Current (continuous): 3AOutput Current (peak): 4AMaximum output voltage drop: 10mV (3A load)Output Noise: 12mVp-p (no load), 43mVp-p (3A load), 20MHz-BW
How to Easily Detect a Failed Capacitor - Page 1
Forum section: electronics / general

author: Geoff-AU
author_rank: Frequent Contributor
timestamp: June 23, 2022, 05:00:06 am
content: I can see from the thumbnail that capacitor is failed, the top is tented.You're welcome!

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: July 02, 2022, 06:28:20 pm
content: Quote from: Geoff-AU on June 23, 2022, 05:00:06 amis it not a good practice to hurry in any judgment

author: Gyro
author_rank: Super Contributor
timestamp: July 02, 2022, 06:47:05 pm
content: Quote from: hesam.moshiri on July 02, 2022, 06:28:20 pmHuh? Any capacitor that has bulged like that is clearly faulty. The first 30 seconds of the video says as much.Edit: Ah, I see, it's your video (it's normal to include a sentence of explanation).

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: July 02, 2022, 08:49:27 pm
content: Quote from: Gyro on July 02, 2022, 06:47:05 pmI mean it is not good to just judge based on thumbnail, the video talks about 3 different cases, and bulgy is one of them
How to Shoot a Business Video with an iPhone or Android - Page 1
Forum section: electronics / general

author: Videoman1
author_rank: Newbie
timestamp: June 10, 2022, 03:47:20 pm
content: This is for those who are looking to do their own technical work to save money.https://www.ballmediainnovations.com/tips-shooting-business-video-iphone-android-home-covid-19/
tardate/LittleArduinoProjects - 600+ Little Electronic Art Projects - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: May 11, 2022, 04:24:29 am
content: Here is a github repo containing over 600 "little electronic art projects":https://github.com/tardate/LittleArduinoProjectsThere is also an accompanying web site:https://leap.tardate.com/A quick perusal of the repo and web site suggest that the author has actually built all of these projects and the pages contain his/her notes in a very well-presented format.The github repo is very large - it will be a multi-gigabyte download. There is an online tool athttps://downgit.github.iowhich allows you to download just a single directory of a repo so you can extract single projects.
Proton BASIC Community - Page 1
Forum section: electronics / general

author: gevv
author_rank: Contributor
timestamp: May 06, 2022, 02:16:11 pm
content: Hello,Proton BASIC Community Positron Proton Development Suite new site:https://protoncompiler.com/Support, sample codes and more....Powerful, fast, and easy to use BASIC compilers for 8-bit PIC and 16-bit PIC24 and dsPIC33 microcontrollers.
220Vac to 5Vdc Transformerless Power Supply Using LNK304 - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: April 28, 2022, 02:40:55 pm
content: Whenever you hear the transformerless supply term, you initially imagine the capacitor-based solution, which means a high voltage capacitor in series with the mains line, then a bridge rectifier, a Zener diode, a filtering capacitor, and so on. Such a circuit is not just able to deliver sufficient current for many applications, also, it is not a reliable solution for the industry, although you might see such circuits in some cheap products that are designed to have a low cost.A month ago, I was repairing a washing machine mainboard. In the examination process, I realized that it is equipped with an LNK304 chip that is used in transformerless supplies. So I decided to design a circuit based on this chip to be used in your applications. The circuit contains 220VAC mains input protection, output filtering, and a regulator.To design the schematic and PCB, I used Altium Designer 22 and the SamacSys component libraries (Altium plugin). To get high-quality fabricated PCB boards, I sent the Gerbers to PCBWay and purchased original components using the componentsearchengine.com. To test the current handling and stability of the output voltage, I used the Siglent SDL1020X-E DC Load and examined the power supply output noise using the Siglent SDS2102X Plus oscilloscope.
Make your own OLED (And how it dies later) - Page 1
Forum section: electronics / general

author: 3roomlab
author_rank: Frequent Contributor
timestamp: April 24, 2022, 03:53:30 am
content: Video creator is Mr JeroenIt shows how the OLED is made, and dies due to oxidation somewhere at the end of the videoedit bonus :bonus bonus :a 1 piece lens telescope?bonus bonus of a bonus :he makes his own maskless wafer stepper
In Circuit Emulators of Microprocessor  - Page 1
Forum section: electronics / general

author: Tom Swift
author_rank: Contributor
timestamp: November 16, 2021, 12:27:05 am
content: Check this out. In-circuit emulators. Maybe you've seen this before?https://youtu.be/Ctu9YL1RK2E

author: Shock
author_rank: Super Contributor
timestamp: November 26, 2021, 11:51:59 am
content: Shame no 8086, 8088 and it's discontinued.

author: Tom Swift
author_rank: Contributor
timestamp: September 13, 2022, 02:30:18 am
content: I know. Sucks.
EDN Design Ideas Compilation - 2001 - 2009 - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: April 14, 2022, 08:49:33 pm
content: Spotted this on the Dutch forum circuitsonline.net:https://www.circuitsonline.net/forum/view/157954EDN has published a compilation of their Design Ideas from 2001 - 2009:https://www.edn.com/design-ideas-pdf-collections-2001-2009/
An Ultrasonic Range Finder Using an SRF05 and an ATTiny85 - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: March 25, 2022, 09:28:40 am
content: An ultrasonic range finder is a useful tool in a variety of real-life and robotic applications, such as in obstacle avoidance and distance measurement systems. The ultrasonic range finder measures the distance by emitting a 40KHz pulse of ultrasonic sound that travels through the air until it hits an object, then it measures the delay of the reflected signal and sends proper commands to other units.I used an SRF05 ultrasonic sensor and an ATTiny85 microcontroller. The distance data is displayed on a 128*64 OLED screen, both in centimeters and inches. Also, a horizontal bar graph provides a visual estimation of the distance. The MCU code was developed using the Arduino IDE.To design the schematic and PCB, I used Altium Designer 22 and SamacSys component libraries (Altium plugin). To get high-quality PCB boards, I sent the Gerbers to PCBWay and purchased original components using componentsearchengine.com. To examine the current consumption of the circuit, I used the Siglent SDM3045X multimeter.Isn’t cool?! So let’s get started.
Building a macro-keyboard, joystick and 3D-Mouse all-in-one named CIMDIT - Page 1
Forum section: electronics / general

author: grumpydeveloper
author_rank: Newbie
timestamp: March 13, 2022, 11:57:06 am
content: Hi,as the title said, I'm currently building a monster.The name is an acronym for "Completely Insane Multi-Input Device Thingy".Yes, I already did a reservation for a room with a nice view in my local mental asylum.Let's start with a picture, yes this thing does exist and does work:Features:up to 64 buttons (8x8 keyboard matrix)up to 16 analog axisup to 8 rotary encoderswitchable profiles (for apps, games, whatever), switchable on device, support for profile iconsprofiles can be reprogrammed over serial port, no re-compilesprimitive all-in-one-file html page for profile configuration in jsonshows graphics sent by serial connectionfully open sourceshows up as a keyboard, a mouse, a joystick and a serial portno drivers needed on target deviceshould work with any modern OSinsanity level on a scale of 0(harmless) to 10(total crazy): a 11 or 12Used components (all off-the-shelf)128x32 OLED monochrome display SSD1306 basedArduino Pro Micro (clone)2x MCP23X1 16-port IO-Extender I2CAT24C256 32kB EEPROM I2C for profile storageCD74HC4067 16-to-1 analog multiplexer26 mechanical keyboard switches3-axis joystickdiodes5 rotary encoders with knobssmall pieces of perfboard with individual dots1 linear potentiometer, those used in mixing consolesWay too many wires in a too small and badly designed custom 3D-printed case, might explode and spit internal any second like a reversed electrolytic cap...To save a lot of hassle, use normal push-buttons with the round mounting hole and a ~13€ 200mm x 120mm x 55mm case and drill holes in itSome hurdles I had:Program sizebecause of program size, had to write my own OLED graphic library, existing ones were too big, bit level graphic functions over I2C, yeahMix of programming languages and areas (C++ for the devices, Typescript, less/css, HTML), Graphic program, hex editor)The build series starts athttps://contentnation.net/en/grumpydevelop/cimdit_1currently 4 articles.Full source and electronics (KiCad 6) in the git repo, link in article. 3D-model (FreeCAD 0.19) following soon, I'll fix some of the issues of the built one first.Looking for feedback and ideas to fill up the remaining 2012 bytes of flash program memoryMaybe I'll cancel the reservation of the room depending on feedback.If anyone wants to help by expanding the in-repo profile generator, from the current json to binary thing to a noob usable editor, get in touch. I have ideas but ran out of motivation for now.CheersGrumpy
Check out this YouTube channel: Electronics for the Inquisitive Experimenter - Page 1
Forum section: electronics / general

author: wa2pux
author_rank: Contributor
timestamp: November 29, 2021, 02:52:22 pm
content: Hey folks!I just wanted to let you all know about my YouTube Channel: Electronics for the Inquisitive Experimenter.I have videos onVNAs and VNA basicsHow to Tune a DuplexerHow to Tune a Hybrid-Ring DuplexerDuplexer BasicsHow to use an Antenna AnalyzerHow to use an Oscilloscope... and much more.I add new videos regularly.Here is the link:https://www.youtube.com/channel/UCmngLyGByObIwpY1pAObhAg/videosHope you find them helpful.

author: coppercone2
author_rank: Super Contributor
timestamp: November 30, 2021, 12:16:59 am
content: I find the common mode analysis to be interesting topics. I was also looking at buying a tuner and that video seems interesting.I think it looks like a great RF channel.

author: Bad_Driver
author_rank: Frequent Contributor
timestamp: January 03, 2022, 06:06:02 pm
content: I found your channel by accident and watched last night some of your videos (and subscribed as well).Your approach to go systematically thru the topics is helpful for RF-starters as me but I think that your „intros“ aresometimes a bit to long (I began with Smith charts since I got a VNA/SSA from Santa Claus).I will try to catch up with all of your videos during the next weeks. For me everything will be helpful that leads me from LF to RF electronics.So thanks for your efforts!

author: cadr
author_rank: Contributor
timestamp: March 04, 2022, 08:58:01 pm
content: Thanks for posting this - a lot of good stuff here to watch!Cheers!

author: Electro Fan
author_rank: Super Contributor
timestamp: March 05, 2022, 06:20:11 am
content: I like your topics and your approach to teaching a lot. Just a small suggestion/request. Others might have a different preference but I’d prefer to not have the gentle low volume music in the background. It’s distracting rather than calming. Just to help explain why this is, imagine if the music was playing while you were making the recordings of your presentations - it would be harder for you to stay focused on your explanations. Over laying the music track is probably relatively easy for you to do when editing but imo it’s just distracting and annoying for the listener. Don’t know if there is a way to make the background music optional for listeners but if not I’d turn it off completely. Your teaching skills are plenty good enough that your videos don’t need the extra packaging touch. Either way, thank you for all the good teaching and the work you put into it.PS, your Three Really Weird Numbers in Electronics video is EXCELLENT, as is the intro Why this Channel and Who is Ralph Gable. Congrats and Thanks!PSS, for any EEVers who are loving electronics at the conceptual and practical hands on levels but who find math to be inhibiting, check out Ralph’s teaching.PSSS, Ralph I hope you will visit the EEVblog forums often as you can probably help a fair number of people with questions bridge the concepts and math - and the most frequent and fundamental questions will probably be good topics for more of your videos.
Joule thief  - Page 1
Forum section: electronics / general

author: Lesterwyatt
author_rank: Regular Contributor
timestamp: July 17, 2022, 09:05:54 am
content: I did a video around 5 years ago explaining the workings of a joule thief. Since then i have had positive comments, however one person has really knocked my video and said my explanation is wrong allround.I would hate to think that my video is spreading misinformation. If it is wrong i will take the video down. Any chance any of you that fully understand the joule thief could take a look at my video. (not going to take it down just from one person's comments).Thankshttps://youtu.be/xssHBT3GQ4A

author: iMo
author_rank: Super Contributor
timestamp: July 17, 2022, 09:23:35 am
content: Let it be..

author: Lesterwyatt
author_rank: Regular Contributor
timestamp: July 17, 2022, 09:47:51 am
content: If the video is wong, it should not be available to watch should it not?

author: beanflying
author_rank: Super Contributor
timestamp: July 17, 2022, 10:06:08 am
content: What you should do it reach out to Colin Mitchell as the commenterhttps://en.wikipedia.org/wiki/Talking_ElectronicsAnd have a scroll down to Joule Thief herehttp://www.talkingelectronics.com/te_interactive_index.htmlI wouldn't take down the video as content is great but consider adding to the description with a link or two including even Big Clives take on them.

author: Lesterwyatt
author_rank: Regular Contributor
timestamp: July 17, 2022, 11:28:54 am
content: Wow didn't know the founder of talking electronics was the commenter of my video!! i will be sure to link to his page. Didn't give it a thought as he only has 3 subscribers, and one video.

author: beanflying
author_rank: Super Contributor
timestamp: July 17, 2022, 11:41:31 am
content: I cut my Electronic teeth on Talking Electronics and those kits a long long time agoDave has a couple of Videos with him and there is a few more on youtube too.

author: Lesterwyatt
author_rank: Regular Contributor
timestamp: July 17, 2022, 11:50:39 am
content: Yes me too. I recall making the spy bug when i was a lad
Australian Magpies cooperating to remove GPS trackers, playing. Off topic post - Page 1
Forum section: electronics / general

author: cdev
author_rank: Super Contributor
timestamp: February 23, 2022, 09:09:13 pm
content: These crow-like birds are pretty smart. And pretty cute.https://www.abc.net.au/news/2022-02-22/magpies-show-cooperative-behaviour-by-removing-tracking-device/100851458https://www.engadget.com/magpies-defeat-tracking-attempts-174742898.htmlThis is really cute.https://theconversation.com/altruism-in-birds-magpies-have-outwitted-scientists-by-helping-each-other-remove-tracking-devices-175246https://theconversation.com/magpies-can-form-friendships-with-people-heres-how-83950https://www.youtube.com/embed/E2IJQc-MGDs?rel=0(12 videos here. they are playing like human children do. They are obviously quite intelligent.)Playing with pinwheels

author: jwet
author_rank: Frequent Contributor
timestamp: February 26, 2022, 04:24:23 am
content: That's really funny. I work with Ornithologists as an electronic consultant and have been involved with some of these tracking type devices. We had a bald eagle that we had a fancy GPS/LEO Satellite tag that we tracked for over a year but one day he just stopped. I've always wondered what happened. Its fascinating to watch these birds and how they can avoid major weather events, really cool.

author: Nominal Animal
author_rank: Super Contributor
timestamp: February 26, 2022, 08:05:07 am
content: When you observe birds as intelligent as corvids, it tends to change how you think of them.For example, here's some crows playing in snow on the top of a car in Russia:
Double Lithium-Ion/Lithium-Polymer USB Type-C Charger - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: February 25, 2022, 10:07:06 am
content: Nowadays, Lithium batteries are used extensively in portable devices, such as cellphones, laptop computers, electronic gadgets, … etc. There is a standard industry-defined procedure (cycle) for charging the lithium-ion/lithium-polymer batteries, otherwise, the lifetime of the batteries is reduced significantly or even they might explode and catch fire. As a basic rule of thumb, a lithium battery should be charged at the rate of 0.5C to 1C. In this article/video, I have introduced a universal double lithium battery charger that the charging current (C rate) can be adjusted simply by changing a resistor value. You just need a 5V power source (such as a mobile charger) and a USB Type-C cable.To design the schematic and PC, I used Altium Designer 22 and the SamacSys component libraries (Altium Plugin). To get high-quality PCB boards, I sent the Gerbers to PCBWay and purchased original components using componentsearchengine.com. To examine the charging current/voltage, I used the Siglent SDM3045X multimeter. Isn’t cool?!, So let’s get started!
Synology NAS DC PS Failure - Xbox 360 Power Brick Swap - Rewire - Page 1
Forum section: electronics / general

author: tzanetos
author_rank: Newbie
timestamp: February 25, 2022, 08:00:48 pm
content: My Synology DS916+ had an unexpected power down, and was stuck in an infinite reset loop, with the AC-DC power brick LED cycling on/off every 10s.Turns out the AC-DC brick that synology provided bit the dust ~3 years since purchase. I had a more than capable AC-DC power brick from my old Xbox 360 lying around. The video details the buzz-out and rewire process, and some guidance when hunting for parts.https://youtu.be/HA3g-hUTheMP.S. just starting out the YouTube channel for these kinds of do-it-yourself guides, so please be gentle in the comments. I know video needs a solid mount and the audio could be better. Working on it...Amazon Affiliate Links for Parts3rd Party DC Power Supplyhttps://amzn.to/3sHDD5H4-Pin DIN Connectorhttps://amzn.to/34HtM7ZToggle Switchhttps://amzn.to/3GODfro
A Portable White Noise Generator Circuit - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: January 28, 2022, 09:04:50 am
content: The white noise generator circuit is a handy tool that can be used to examine the circuit or a communication line under some random noises to make sure about the stability of the device in real and harsh environments. The current consumption of the device is low, so you can power the circuit using a small 12V-23A battery. if you have access to a 3D printer, you can build a nice enclosure for the circuit. The schematic and PCB have been designed using Altium Designer 22. The output white noise has been tested using the Siglent SDS2102X Plus oscilloscope.
Why you should buy a Tek scope (1983) - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: January 17, 2022, 05:04:25 am
content: An in-depth technical comparison from 1983 of the Tek 2215A against the PM3217, B&K 1570 and Leader LBO-517 made by Tektronix's marketing department...

author: ledtester
author_rank: Super Contributor
timestamp: January 17, 2022, 05:13:59 pm
content: Another Tektronix marketing video:Affordable Portables Tektronix 2200 Series Oscilloscopes 1986
Schematics resources - Page 1
Forum section: electronics / general

author: RigPa
author_rank: Newbie
timestamp: March 01, 2022, 03:13:05 pm
content: Schematics eldorado:https://audioschematics.dk/more-schematics/

author: Shock
author_rank: Super Contributor
timestamp: March 02, 2022, 08:58:58 pm
content: Hi and welcome, we have a repair related section on the forum and a thread for repair resources.https://www.eevblog.com/forum/repair/repair-documents-and-links-sticky-me-please-mods/
Ohm's Law: History and Biography - Page 1
Forum section: electronics / general

author: EEVblog
author_rank: Unknown
timestamp: January 06, 2022, 07:03:39 am
content: Great historical video on Ohms law!

author: EEVblog
author_rank: Unknown
timestamp: January 06, 2022, 07:12:43 am
content: The entire channel is devoted to this!https://www.youtube.com/c/KathyLovesPhysicsHistory/videos
HP419A Oscillations - Page 1
Forum section: electronics / general

author: gridleak
author_rank: Contributor
timestamp: January 05, 2022, 06:20:45 am
content: Back in April 2020 I reported my 419 had a strange oscillation of 2vpp at 9hz occurring at at 3-- cardinal ranges (e.g. 3mv,30mv...30v,300v). Having no success in troubleshooting, ( I had spent days checking resistors and connections on switch S1) even with the kind help of experts, I put that meter aside, and paid attention to a second 419 I have. I re-lamped, and built a new battery pack for the second meter. The second meter doesn't have the strange oscillation. I swapped A4 boards to verify the oscillation remained with the first meter. The oscillations must be due to some defect in one or more photocells in meter one, or in one or more of the components surrounding the chopper block. Ripping out, and replacing the diodes and caps on the chopper block would have been a PITA with no guarantee of success, if it turns out to be a photocell. Getting the second meter working was preferable. I know that I have seen this oscillation complaint on other forums, as well. So, hopefully, this report should be useful for those with an oscillating 419.
Leo's bag of tricks - Page 1
Forum section: electronics / general

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: September 10, 2021, 08:41:04 am
content: Just came across this interesting electronics design channel :https://www.youtube.com/channel/UCe1bjEcBichpiAMhExh0NiQ

author: ebastler
author_rank: Super Contributor
timestamp: May 01, 2022, 05:38:41 pm
content: Just another shout-out for Leo's channel! RoGeorge just pointed me to it (and to Leo's water tank monitor in particular). But there are many more cool projects, presented in a way I find pleasant and insightful. A guy who has founded multiple technology companies and still enjoys the technology part of it -- and who has a great taste in shirts too!Recommended; deserves more subscribers than he has.

author: arduinew
author_rank: Newbie
timestamp: July 03, 2022, 04:36:55 pm
content: would like to contact Leo, re his Stirling Engine/ dynomometer design ... but not via Farcebook.. any clues?Thanks

author: ebastler
author_rank: Super Contributor
timestamp: July 03, 2022, 05:22:50 pm
content: Leo's email address is on his Youtube channel info page.I am reluctant to post it here, but will send you a PM.

author: arduinew
author_rank: Newbie
timestamp: July 05, 2022, 01:27:53 pm
content: Thanks again, went looking for it, couldn't see it on Freetube, A Utube surrogate..- Clicked on About, on his channel, nothing!I assume about would be the place for the email address?(I am asking for future ref re other channels too).

author: PA0PBZ
author_rank: Super Contributor
timestamp: July 05, 2022, 01:41:51 pm
content: I clicked on About and it shows a button 'show email address', Clicking on that and confirming I'm not a robot revealed the email address. Maybe you have to be logged in for it to work, no idea.

author: ebastler
author_rank: Super Contributor
timestamp: July 05, 2022, 02:01:28 pm
content: What PA0PBZ describes is what I see as well. Maybe „Freetube“ does not provide the full Youtube details, so you would need to go to the Youtube website directly to access all available channel info?

author: arduinew
author_rank: Newbie
timestamp: July 06, 2022, 12:25:38 pm
content: yeah, looks like it, thanks PA0PBZ
Cooling FAN Controller Using an LM35 (No MCU) - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: December 29, 2021, 08:51:18 am
content: The high temperature of the power components is a known phenomenon in electronics. To overcome this challenge, the designers mount heatsinks on the components to dissipate the heat, however, in many commercial and home appliance devices, the embedded heatsink is not adequate and the air must be circulated faster to reduce the heatsink and component temperature, otherwise, the lifetime of the component is reduced significantly.The proposed automatic FAN controller board is simple, compact, and can be embedded inside commercial devices. The LM35 temperature sensor could be fixed on the heatsink using some silicon glue.The user can easily set the temperature threshold using a potentiometer. The board can be supplied using a 5V or a 12V supply, therefore a variety of 5V, 12V, miniature, and PC FANs can be used.I used Altium Designer 21 and SamacSys component libraries (SamacSys Altium plugin) to draw the schematic and PCB. Except for the connectors, all components are SMD and easy to solder.
“Mr Carlson’s Lab” - His company  - Page 1
Forum section: electronics / general

author: eti
author_rank: Super Contributor
timestamp: December 19, 2021, 09:59:44 am
content: As published in his lab tour video, seen here:The very nice and supremely clever Paul Carlson of “Mr Carlson’s Lab”, has a website, so I thought you’d like to look:http://www.creativedesigncomponents.com/

author: eti
author_rank: Super Contributor
timestamp: December 27, 2021, 05:30:06 am
content: Does anyone reckon they could guess his age? I’d say very late 30s to early-mid 40s, but he never seems to age much. What do you think?

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: December 27, 2021, 05:38:07 am
content: You're only as old as the woman you're feeling.
Arduinos and RGB leds. - Page 1
Forum section: electronics / general

author: msuffidy
author_rank: Frequent Contributor
timestamp: December 10, 2021, 06:31:53 am
content: I am just investigating some obvious things with Arduinos and RGB leds.

author: msuffidy
author_rank: Frequent Contributor
timestamp: December 14, 2021, 06:07:59 am
content: Here are the later ones
Hunter Scott Guide to Designing Electronics that Work (featured in hackaday) - Page 1
Forum section: electronics / general

author: Just_another_Dave
author_rank: Regular Contributor
timestamp: November 19, 2021, 08:49:00 pm
content: Some days ago hackaday published this article about a book on designing electronic circuits written by Hunter Scott (the pdf version can be downloaded for free):Hackaday article:https://hackaday.com/2021/11/15/designing-electronics-that-work/Book website:http://designingelectronics.com/I haven’t been able to check it completely, but it seems a nice resource for beginners to learn to plan a circuit, chose its components, design the layout, etc.As I haven’t seen any posts about it in the forum (if there’s any duplicate or this thread suits better another board, please tell me and I’ll delete or move the thread), I thought that it was worth to be shared as a complement to Dave pcb design guide for those who are starting
[Video] Dick Smith Live: Adventuring, Electronics & Amateur Radio (19 Nov 2021) - Page 1
Forum section: electronics / general

author: vk3yedotcom
author_rank: Frequent Contributor
timestamp: November 18, 2021, 01:01:44 am
content: Dick Smith will be the special guest on the Ham Radio DX YouTube channel.It's tomorrow night, Australian time.From the video blurb: Dick has recently released his autobiography titled, Dick Smith: My Adventurous Life and tonight we're privileged to sit down live with Dick, speaking to him about his adventures, including the first solo helicopter flight around the world, his business ventures and being a pioneer for Amateur and CB radio.It promises to be a great watch. So set your reminder on and don't miss it!
Dave on the Simple Electronics Podcast - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: November 14, 2021, 03:10:44 pm
content: Topics discussed:- brief history of the start of the EEVBlog channel- solar roadways- can Dave program?- what's a typical day like?- reading youtube comments- Elon Musk- the Nikola truck fraud- electric cars- kangaroos- size of Australia- the cheapification of electronics - good or bad?- the way EE is taught in university- with generous funding what business would you start? would you still do youtube?- mechanics of Kerbal space program- April 1st videos
FesZ Electronics youtube channel - Page 1
Forum section: electronics / general

author: Axk
author_rank: Regular Contributor
timestamp: June 21, 2020, 01:29:12 pm
content: Not my channel.Very clear and to the point explanations of various topics with LTSpice simulations.IMO the channel deserves much more subscribers.https://www.youtube.com/channel/UCsWRAAMs_Cn78_kRLSpkb6w

author: Gary350z
author_rank: Regular Contributor
timestamp: July 26, 2020, 03:47:45 pm
content: Quote from: Axk on June 21, 2020, 01:29:12 pmI agree 100% with Axk.

author: b_force
author_rank: Super Contributor
timestamp: August 06, 2020, 11:01:57 pm
content: I seriously don't understand why this guy doesn't has more subscribers.From a engineering point of view, it's one of the best out there.

author: gwideman
author_rank: Contributor
timestamp: November 11, 2021, 10:55:23 pm
content: I agree -- he's been covering some very relevant topics in significant and useful depth.Also worth a look regarding in-depth examination of PCB layout topics: Robert Feranec's channel:https://www.youtube.com/channel/UCJQkHVpk3A8bgDmPlJlOJOA
Repair of a LCD TV destined for scrap - Page 1
Forum section: electronics / general

author: cpuerror
author_rank: Regular Contributor
timestamp: January 06, 2022, 03:07:01 pm
content: Can I save this TV that stopped working just as the warranty expired?

author: thm_w
author_rank: Super Contributor
timestamp: January 07, 2022, 08:39:26 pm
content: interesting lens arrangement on the back
Magnetic levitation  - Page 1
Forum section: electronics / general

author: Lesterwyatt
author_rank: Regular Contributor
timestamp: October 23, 2021, 03:56:10 pm
content: Although this is not a new subject, in this video I have managed to levitate a static magnet using only a single OpAmp controlling an electromagnet with a hall-effect. It will give the beginner an appreciation of control theory, and how to calculate hysteresis.https://youtu.be/uwqpJiWcLQw
Repair: Illuminating the LED Bulb SCAM - Page 1
Forum section: electronics / general

author: cpuerror
author_rank: Regular Contributor
timestamp: October 18, 2021, 11:42:22 am
content: I dig in and find out why these supposedly environmental products "mysteriously" fail well before their advertised lifetime.

author: Psi
author_rank: Super Contributor
timestamp: October 18, 2021, 12:06:41 pm
content: i don't even have to watch the video to know why, they design the driver to run way to hot.Either a bridge diode fails or the cap gets slowly cooked until the switchmode has no filtering.

author: Zero999
author_rank: Super Contributor
timestamp: October 18, 2021, 12:44:02 pm
content: Quote from: Psi on October 18, 2021, 12:06:41 pmTo make matters worse, going by the lack of an inductor, the power supply shown in the YouTube thumbnail, is linear, not switching.

author: madires
author_rank: Super Contributor
timestamp: October 18, 2021, 01:49:03 pm
content: Yup, non-existing thermal management for the driver. You can call it also planned obsolescence, AKA "let's cook the driver". The LEDs might last 30kh, but not the driver. And we end up with even more e-waste.Looks like we need some regulation to discourage manufacturers from producing that junk.

author: Psi
author_rank: Super Contributor
timestamp: October 19, 2021, 11:11:15 pm
content: Yeah, we badly need enforced laws to prevent companies claims "50,000 hours" on their LED bulbs unless it's actually true.They state the LED diode life but then design a driver to work for 1000-2000 hours.This is why I'm slowly updating rooms in the house to use recessed LED stripe lighting.At least with that you can run the lighting it at whatever brightness you desire to keep the heat acceptable, and the driver is separate so easily replicable.

author: madires
author_rank: Super Contributor
timestamp: October 20, 2021, 08:59:23 am
content: I'm also a heavy user of LED strips.

author: cpuerror
author_rank: Regular Contributor
timestamp: October 20, 2021, 06:37:43 pm
content: it's amazing how long they have been getting away with it, but I suppose the grift is small enough and has been going on for so long that it has escaped regulators. And really, how often do people claim the warranty? Noma could easily demand receipts, that you ship the bulbs back to the manufacturer, and then they can pro rate it and offer a 25% discount or something on the next purchase of identical lights. They make it so it makes no economical sense to do anything other than chuck them at EOL.
The Signal Path - Teardown of HP Capacitive voltage divider - Page 1
Forum section: electronics / general

author: PartialDischarge
author_rank: Super Contributor
timestamp: October 18, 2021, 12:50:48 pm
content: Interestingly I have the same divider but mine is marked as HP 11039A .Note how at 10:40 he turns on the HV PS with a plastic pen, can never be too careful!