hybridfree/eevblog-posts huggingface dataset:
Physics Girl - Health issues - Page 1
Forum section: electronics / general

author: IanJ
author_rank: Unknown
timestamp: March 07, 2023, 09:31:53 am
content: Hi all,Not sure if has been posted already but Dianna from the fantastic YT channel "Physics Girl" is seriously ill (long COVID).Very much worth supporting in any way.https://youtu.be/vydgkCCXbTAIan.

author: Fraser
author_rank: Super Contributor
timestamp: March 07, 2023, 09:44:05 am
content: As someone who is fighting to return to a normal working life after being diagnosed with Myalgic Encephalomyelitis (M.E.) and associated Chronic Fatigue Syndrome, she has my sympathy. I have been battling this similar illness since 2010. It is a long haul and not at all easy. I hope that her recovery is faster than mine. Sadly medical science is only just learning about M.E and Long-Covid.Fraser

author: HighVoltage
author_rank: Super Contributor
timestamp: March 07, 2023, 10:29:47 am
content: We had a family member that was diagnosed with M.E. and traveled to Japan to get a treatment with Germaniumhttps://asaigermanium.com/Allegedly this treatment is not so much known in the western world.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: April 14, 2023, 05:49:00 am
content: A new y/t short popped up recently.Long story short, she's got a long way to go.The video has a good chart that I've extracted for those who may have similar issues. By all means seek help if you're unwell. The time is now to hound them and insist on roadmapping your recovery.https://www.youtube.com/shorts/RQp6sTDSGm8

author: @rt
author_rank: Super Contributor
timestamp: June 25, 2023, 12:37:45 am
content: I watched the last couple of vids. It’s a terrible way she’s in, and for me a bit of an eye opener.I can associate her easily with the word ‘vitality’,so through the application of empathy, I am aware that my own potential to have such a reaction has become uncertain, and also shoved into my field of awareness.Not comfortable hey?

author: wilfred
author_rank: Super Contributor
timestamp: June 25, 2023, 02:56:25 am
content: I'm not sure how long ago I first heard she was very ill, but it seems she's severely affected. And not to forget that there will be a great many others less severely affected wishing they had answers and hoping for relief and return to normal.I have seen some other youtubers appear to mention symptoms consistent with milder long COVID but I'm no doctor. Even the doctors don't seem to have a strong understanding of just how to diagnose it yet. I did see some stats from the CDC in America saying 7-8% of American adults have symptoms of long COVID that they didn't have prior to contracting COVID. And what captured my attention most was some US states have up to 12% whilst others report less than half that number. But whichever way you slice it, it is still millions.I remember when Chronic Fatigue was poorly understood and dismissed openly. I hope now more effort in research helps improve things.Best wishes if you're one of those struggling to get treatment and relief for yourself or a family member.
Adjustable Low EMI Switching Power Supply  - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: May 31, 2023, 08:10:17 am
content: A power supply is an essential tool on every electronics bench. The TPS54202 is a highly efficient 2A synchronous buck converter with a wide 28V input voltage range and low EMI figures, making it suitable for various applications. These features make the TPS54202 an excellent choice for building a power supply.To achieve a low noise level and ensure high performance, I implemented a variety of input and output filters, along with following several PCB design techniques. The chip operates at a switching frequency of 500KHz and is equipped with internal loop compensation. Setting up the power supply is simple—just connect the input to a step-down AC transformer (e.g., 220V to 15V) and use a multiturn potentiometer to adjust the output voltage to your desired level.For the schematic and PCB design, I utilized Altium Designer 23 and shared the project with my friends for feedback and updates using Altium-365. The fast component search engine, Octopart, proved invaluable in quickly obtaining component information and generating the Bill of Materials (BOM). To ensure high-quality fabricated boards, I sent the Gerber files to PCBWay.I tested the circuit for output noise and load step response using Siglent SDS2102X Plus oscilloscope and Siglent SDL1020X-E DC load. I am confident that this circuit will meet your requirements for a compact and efficient power supply, providing reliable performance on your electronics bench.
RP2040-Zero Powered Laser Range Finder with GUI and a 2.4" TFT Display - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: June 06, 2023, 09:34:47 am
content: In this article/video, I used an RP2040 Zero board, a VL53L0X Laser time-of-flight ranging sensor, and a 2.4” TFT display to build a graphical laser rangefinder unit that can be used to monitor the distance, check the liquid level, etc. The board is also equipped with a relay and a buzzer that allow the user to provide distance-related acoustic signals or activate/deactivate an external device, such as a pump, brake, etc.Source:https://resources.altium.com/p/rp2040-zero-powered-laser-range-finder-gui-and-24-tft-displaySpecificationsInput Supply Voltage: 5V-Regulated (USB Type-C or wire-to-board connector)Current Consumption (maximum): 200mAMeasurement Range: Adjustable 30mm to 1000mm (2000mm long range)Distance Resolution: 1mmSensor Error: 3% (best) to 10%
RSD Academy youtube channel gone? - Page 1
Forum section: electronics / general

author: .RC.
author_rank: Frequent Contributor
timestamp: May 09, 2023, 01:52:40 am
content: I was watching some RSD Academy youtube videos a couple of days ago. Now the channel seems to have vanished.https://www.youtube.com/c/rsdacademy

author: YurkshireLad
author_rank: Frequent Contributor
timestamp: May 09, 2023, 01:53:57 am
content: Oh that's a shame. I've watched some of his videos too and I liked his style.

author: RoGeorge
author_rank: Super Contributor
timestamp: May 09, 2023, 06:58:33 am
content: The name put in a search engine returned thishttps://www.patreon.com/posts/update-on-whats-68337168?l=dehttps://www.patreon.com/posts/25-march-update-80554441Looks like had to change the name. Probably because that's not a real academy IDK.I remember from some years ago watching a videos about electromagnetic wave. He was saying that the electric field turns into magnetic field, back and forth, and it was drawn like that on the table. AFAIK, both electric and magnetic fields grows and go through zero at the same time, unless we talk about circular polarized waves. That made me doubt that channel, and didn't watch other videos. (I hope I'm not making any confusions about the channel.)New name seems to be Vocademyhttps://youtu.be/RUQ1OhDYY2A
Digital FM Transmitter Circuit (Schematic + PCB + Code) 😊 - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: April 30, 2023, 07:07:51 pm
content: Without a doubt, FM transmitter and Receiver are among the top favorite electronic project topics, however, building a digital FM transmitter can be a challenging project for electronics enthusiasts. The transmitter can then be connected to a source of audio, such as a phone or computer, to broadcast music or other audio content.In this project, I have introduced a compact digital FM transmitter circuit that operates in the frequency range of 87MHz to 108MHz. The frequency can be adjusted using two tactile push-buttons, with a 0.1MHz step size. The heart of the circuit is an ATMega8 microcontroller, which communicates with a 0.96-inch SPI OLED display and the KT0803L FM transmitter chip via an I2C interface. You can directly connect a microphone or an AUX cable to the board to broadcast your desired sound, such as playing a piece of music from your cellphone, computer, … etc. After conducting some tests, it was found that the circuit operates quite stable, and the received sound is clear and sharp.To design the schematic and PCB, I used Altium Designer 23 and shared the project with my friends to get their feedback and updates using Altium-365. The fast component search engine (Octopart) allowed me to quickly consider components’ information and also generate the BOM. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. I am confident that utilizing this circuit will be an enjoyable and fulfilling experience for you.
Forrest Mims III comments on the writing of the Engineer Notebooks - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: March 22, 2023, 12:55:44 pm
content: On Facebook Forrest Mims made this comment about the production of the Engineer's Notebook:QuoteFacebook link:https://www.facebook.com/forrest.mimsiii/posts/pfbid02sgHtD1YGkC5tTHQys2N49K4aa2tUhruN4hdjEm3xL44VdQUZptkBCVTKyBrjq1zpl

author: Tycho_Brahe
author_rank: Contributor
timestamp: March 31, 2023, 02:48:22 am
content: I love this. I still have several of his little books I bought from Radio Shack in the late 70s or early 80s (can't remember exactly). As a kid, I loved going in to buy some discrete components even if I didn't know what to do with them.What really amazes me about Forrest is his drawing and penmanship skills. How I wish I could write that neatly.

author: casualrex
author_rank: Newbie
timestamp: November 25, 2023, 02:23:13 pm
content: I have both titles mentioned: Getting Started In Electronics and Engineer's Notebook. I just used EN recently to construct a multi-hour time delay based on the 555 timer IC. That takes me back to 1984, when I bought the books at Radio Shack. I also was and still am a big fan of the pentel 0.7mm pencil. I wore-out one of them doing my college math homework.
Searching for Finnish electronics Youtube Channel - Page 1
Forum section: electronics / general

author: Dave3
author_rank: Regular Contributor
timestamp: April 15, 2023, 04:34:45 pm
content: We are searching for a Northern European Electronics Repair youtuber that we watched a few years ago. Maybe he was from Finland. Can't recall his channel's name and can't find it searching.He did audio repair, computer repair, some solar power work, some old car repairs, and refurbishing of his parent's farm house. Fun engineering projects. Thank you

author: tunk
author_rank: Super Contributor
timestamp: April 15, 2023, 05:00:17 pm
content: Maybe this:https://www.youtube.com/@FFcossag/videos

author: Dave3
author_rank: Regular Contributor
timestamp: April 15, 2023, 10:07:26 pm
content: That's him! Thank you so much for responding; I have a lot of videos to catch up on. . .
New YouTube channel - Page 1
Forum section: electronics / general

author: cowasaki
author_rank: Frequent Contributor
timestamp: February 07, 2021, 06:42:48 pm
content: Hello all,I've had a YouTube channel for years but it was only for sharing the odd video rather than as an active channel.I have now decided to start making content for the channel specifically and have started buying equipment to do a more professional job. My area of expertise is valve/tube amplifiers, lab equipment and similar. I have planned out about 20 videos with two of these being "Building a valve tracer" and "Using a valve tracer". I've taken some of the potential footage and ideas and just created a test video just to check out the equipment and learn to use the software.If you are interested in Valve/Tube technology, amplifiers, music equipment or lab equipment then it may well be the place for you. I would appreciate any likes, comments or subscriptions.Thanks a lot.

author: JohnnyMalaria
author_rank: Super Contributor
timestamp: February 07, 2021, 08:12:55 pm
content: Liked, commented and subscribed!Good luck

author: cowasaki
author_rank: Frequent Contributor
timestamp: January 02, 2023, 10:29:57 pm
content: Thanks

author: Junaid_raza
author_rank: Contributor
timestamp: April 03, 2023, 06:36:41 pm
content: I Really like your work
Interesting avionics teardown you might be interested in - Page 1
Forum section: electronics / general

author: adriansmith31
author_rank: Contributor
timestamp: April 03, 2023, 05:45:11 pm
content: A couple of years ago I started messing around trying to make an electronics YouTube channel whilst I was on Covid furlough. I came across a seller on eBay selling parts from an airlines scrap planes and spare parts storage so I bought a few of his items as they were really cheap. Previously I've bought some RAF Tornado and Nimrod parts and sought help with item used for mission debriefing here in the past. That item was scrapped btw and was used to make various electronics projects.Anyway I thought those that have not repaired avionics would like to see the sort of engineering level that goes into these things. In this example I have a Symbol Generator from a BAE146. This box produced the graphics and symbols for the cockpit CRT displays from the aircraft data. I've linked my blog post below.Thought I'd share it. Not a shameful blog promotion (honest)https://www.adrian-smith31.co.uk/blog/2021/05/aircraft-avionics-teardown-honeywell-symbol-generator/
Low Noise AC to DC Rectifier Using Capacitance Multiplier [Altium Designer] - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: March 30, 2023, 07:34:17 pm
content: Low Noise AC to DC Rectifier Using Capacitance Multiplier [Altium Designer]According to tests, this circuit converted the massive 1500mVp-p ripple to a 10mVp-p noise. even can be better than this. Please check the video.
Voltlog #211 - Joulescope DC Energy Analyzer Review & Teardown - Page 1
Forum section: electronics / general

author: johnlsenchak
author_rank: Frequent Contributor
timestamp: February 26, 2019, 12:28:18 pm
content: Voltlog #211 - Joulescope DC Energy Analyzer Review & TeardownVoltLogPublished on Feb 25, 2019The Joulescope is a low cost precision dc energy analyser which is currently on kickstarter so check the links below.Posted 02/26/2019 Duplicate Post turned it into a new post Sorry for the mistake

author: David Hess
author_rank: Super Contributor
timestamp: February 26, 2019, 04:49:08 pm
content: Precision but no accuracy or noise specifications?

author: coppice
author_rank: Super Contributor
timestamp: February 26, 2019, 05:08:23 pm
content: Quote from: David Hess on February 26, 2019, 04:49:08 pmI don't think they have specified the noise performance, but the accuracy is shown in both the above video and the manual.

author: coppice
author_rank: Super Contributor
timestamp: February 26, 2019, 05:19:51 pm
content: There is a real need for a good tool of this type when developing ULP applications, but this one seems to have serious limitations that limit its value. The endlessly changing supply impedance is going to be really troublesome in a lot of designs, and the sampling is too slow to follow the true consumption of interrupt routines that only last for 1 or 2 microseconds of high consumption out of sleep mode. These are the kinds of limitations which lead TI to develop their MSP430/MSP432 tools, which feed metered shots of energy into the power supply. This gives poor accuracy in seeing exactly when the current demand goes up and down, but it solves the dynamic range issues in measuring the consumed energy with decent precision.

author: splin
author_rank: Frequent Contributor
timestamp: March 02, 2019, 01:50:48 pm
content: It would be interesting to know what the ADCs, U22 and U26, are. I had a quick look on Digikey but the closest parts in 6 pin packages I could find are 12 bit 3MSPS parts. I wonder why there are two - interleaved perhaps?

author: voltlog
author_rank: Regular Contributor
timestamp: March 03, 2019, 06:12:30 am
content: Perhaps one ADC for current and the other for voltage measurement?

author: splin
author_rank: Frequent Contributor
timestamp: March 03, 2019, 03:00:28 pm
content: Quote from: voltlog on March 03, 2019, 06:12:30 amOf course - I'd forgotten that it monitors voltage as well.Are there are any markings on U22 and U26? Knowing which ADCs are used allow us to get an idea of the noise performance, which is rather important but unspecified.

author: johnlsenchak
author_rank: Frequent Contributor
timestamp: March 04, 2019, 12:49:47 am
content: Thanks for joining us here for this discussion

author: CChin254
author_rank: Regular Contributor
timestamp: April 29, 2023, 10:53:15 pm
content: The ADCs used are the ADS7056 from Texas Instruments. It is chip number 10 listed in the image below.
Linus Tech Tips' channels hacked this morning, promoting crypto scams - Page 1
Forum section: electronics / general

author: Jackster
author_rank: Frequent Contributor
timestamp: March 23, 2023, 04:22:28 pm
content: This morning, the LTT main channel and its sister channels were hacked.The main channel was renamed and rebadged as a Tesla channel and then went live with an Elon Musk live stream featuring a few other people with links to some crypto crap.The main channel was taken down shortly after and remains down.Pretty interesting to see such a large network of channels hacked.What are we thinking? Youtube 2FA flaw? Staff device hacked? Inside job?

author: Black Phoenix
author_rank: Super Contributor
timestamp: March 23, 2023, 05:48:08 pm
content: I remember some years ago on a video Linus telling that they had at the beginning an android phone on the server room in the new building that everyone would connect remotely (via Anydesk or something similar) for 2FA needs. But they had already finished using such workaround and now was implemented in a different way.

author: thm_w
author_rank: Super Contributor
timestamp: March 23, 2023, 09:09:12 pm
content: Yeah its interesting, await the explanation.Apparently there is malware specifically targeting youtube gamers:https://www.bleepingcomputer.com/news/security/new-malware-bundle-self-spreads-through-youtube-gaming-videos/Uses existing cookie to log in then upload its own videos. But I don't know if that lets you lock out the existing user account out.

author: Jackster
author_rank: Frequent Contributor
timestamp: March 24, 2023, 11:16:39 am
content: Dave called it.Session token based attack via sponsor attachment.https://youtu.be/yGXaAWbzl5A

author: SiliconWizard
author_rank: Super Contributor
timestamp: March 24, 2023, 09:23:12 pm
content: This crypto scam impersonating Musk has been going on for months.I'm really curious to know who is behind it.

author: mc172
author_rank: Frequent Contributor
timestamp: March 24, 2023, 09:29:47 pm
content: Shame it got taken down. The Crypto scam content was orders of magnitude better than that of the original channel.

author: thm_w
author_rank: Super Contributor
timestamp: March 27, 2023, 12:55:35 am
content: tldr:- 700MB padded file to avoid being scanned- scr file extension, to not seem super suspicious as an exe

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: March 27, 2023, 01:15:56 am
content: Windows -still- allows any file to run as exe silently with full access to user data?We knew about this, what, 20 years ago.
Towards understanding IMU: Basics of Accelerometer and Gyroscope Sensors - Page 1
Forum section: electronics / general

author: YTusername
author_rank: Regular Contributor
timestamp: March 24, 2023, 09:28:30 pm
content: HiCheck out my new article about IMU and specifically accelerometer and GyroscopeTowards understanding IMU: Basics of Accelerometer and Gyroscope Sensors and How to Compute Pitch, Roll and Yaw AnglesI wrote this article to be practical enough to understand how accelerometer and gyroscope work, what ate the advantages and disadvantages of each are, and how to compute pitch, roll and yaw angles. This article was inspired byPaul McWhorter’s 9-Axis Inertial Measurement Unit (IMU) serieson Youtube.Your comments and notes are highly appreciated.
places to find Schematics  IMSAI Guy youtube - Page 1
Forum section: electronics / general

author: jonovid
author_rank: Super Contributor
timestamp: March 08, 2023, 04:41:03 am
content: places to find schematics: IMSAI Guy youtubehttp://www.ko4bb.com/getsimple/index....http://bama.edebris.com/manuals/https://xdevs.com/doc/https://danyk.cz/index_en.htmlhttps://www.amprepairparts.com/schema...https://www.schematicsunlimited.com/https://w140.com/tekwiki/wiki/Main_Pagehttps://www.vintage-radio.info/heathkit/https://www.hifiengine.com/https://elektrotanya.com/kereshttps://artekmanuals.com/https://elecurls.tripod.com/https://history.nih.gov/display/histo...https://www.ipdb.org/Pinballhttps://www.kennethkuhn.com/http://hparchive.com/hp_equipmenthttps://www.cbtricks.com/http://manuals.repeater-builder.com/
Level UP EE Lab Youtube Channel -  - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: February 06, 2023, 02:48:09 pm
content: I just want to bring attention to the Level Up EE Lab Youtube Channel:https://www.youtube.com/@levelupeelabWell produced videos -- mainly HAM radio related.Some of the projects presented so far:- Homebuilt Spectrum Analyzer- Superhet Receiver- HF Transmitter
30A AC Soft Starter (Inrush Current Limiter) Circuit with Fail-Safe - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: January 31, 2023, 11:47:13 am
content: Are you tired of dealing with the damaging effects of inrush currents on your industrial devices? Look no further than an AC inrush current limiter (soft starter). Inrush current, also known as surge current, is the large amount of current that flows into a load at start-up. This can cause damage to equipment, reduce its lifespan, and lead to costly downtime. But with an AC inrush current limiter, you can eliminate these problems. Simply, a soft starter works by limiting the initial current flow, ensuring a smooth and efficient start-up, while protecting your equipment from damage.So I decided to design this AC soft starter that is equipped with a fail-safe mechanism. During start-up, the inrush current passes through a power resistor, and after a delay (adjustable between 1ms to 1s), a 30A power Relay shorts the resistor and applies the full power to the load. If this Relay fails for whatever reason, the power resistor won’t melt everything; the logic circuit activates the fail-safe Relay that turns OFF the load to prevent any damage. 3 LEDs indicate the Supply, Normal, and Fault conditions. I selected the cheap ATTiny13 MCU as a controller.To design the schematic and PCB, I used Altium Designer 23. The fast component search engine (Octopart) allowed me to quickly consider components’ information and also generate the BOM. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. I used the Arduino IDE to write the MCU code, so it is pretty easy to follow and understand.Let’s get started :-)
miniDSO Forum - Page 1
Forum section: electronics / general

author: Maximus Panin
author_rank: Contributor
timestamp: January 29, 2023, 04:47:23 pm
content: Hello.What happened to the miniDSO forum (equipment developer Miniware TS100, DS203, DT71, MHP30) ?When you try to open any topic on the forum, there is a redirect to various sites.

author: Maximus Panin
author_rank: Contributor
timestamp: January 30, 2023, 02:31:34 pm
content: Here's what we found out:Quote
The SDG Electronics Hot Air Station Comparison Thread - New: Metcal HCT-910 - Page 1
Forum section: electronics / general

author: SteveyG
author_rank: Unknown
timestamp: July 13, 2021, 08:41:49 am
content: This can be a discussion place for some of the main contenders when considering a hot air station. The Quick TR1300A is next.Best BST-863 1200W Hot Air StationQuick 861X 1300W Hot Air StationMetcal HCT2-120 120W Hot Air Pencil (new version is higher powered)Quick 857DW+ 580W Hot Air StationMetcal HCT-900 320W Hot Air StationQuick TR1300A 1300W Hot Air StationMechanic 861DW MaxMetcal HCT-910 900W Hot Air Station

author: SteveyG
author_rank: Unknown
timestamp: July 13, 2021, 08:42:47 am
content: (placeholder)

author: SteveyG
author_rank: Unknown
timestamp: July 13, 2021, 08:43:35 am
content: (placeholder)

author: SteveyG
author_rank: Unknown
timestamp: July 13, 2021, 08:44:19 am
content: (placeholder)

author: HighVoltage
author_rank: Super Contributor
timestamp: July 13, 2021, 08:50:13 am
content: I have the Metcal HCT-900-21 and also the Quick 857And I prefer the Quick 857 every day over the Metcal.The only reason from my perspective for the high Metcal price is the brand name.

author: SteveyG
author_rank: Unknown
timestamp: July 13, 2021, 08:55:11 am
content: I think it's geared towards production use, where the station is just left running for most of the day. In use the reduced power of the Metcal is not significant IMO, but without the auto-sleep and rapid heat-up (which is why the new ones are so high powered) it doesn't really compete with the others.

author: SteveyG
author_rank: Unknown
timestamp: January 18, 2023, 08:45:46 pm
content: Added the new Metcal HCT-910 900W Hot Air Station
Wireless Home Automation (Control and Monitoring) Using a Nextion HMI Display - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: December 30, 2022, 09:38:50 am
content: Nowadays home automation is a trending topic among electronic enthusiasts and even the mass population. People are busy with their life challenges, so an electronic device should take care of the home instead! The majority of such devices need internet or Wi-Fi for connectivity or they don’t offer a user-friendly GUI, but I decided to design a standalone wireless monitoring/controlling unit that can be adjusted using a graphical and touch-controlled LCD display.The device consists of a panelboard and a mainboard that communicate using 315MHz (or 433MHz) ASK transceivers. The panel side is equipped with a high-quality 4.3” capacitive-touch Nextion Display. The user can monitor the live temperature values and define the action threshold (to activate/deactivate the heater or cooler), humidity (to activate/deactivate the humidifier or dehumidifier), and ambient light (to turn ON/OFF the lights). The mainboard is equipped with 4 Relays to activate/deactivate the aforementioned loads.To design the schematic and PCB, I used Altium Designer 23. The fast component search engine (octopart) allowed me to quickly consider components’ information and also generate the BOM. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. I used the Arduino IDE to write the MCU code, so it is pretty easy to follow and understand. Designing a GUI using the Nextion tools was a pleasant experience that I will certainly follow for similar projects in the future. So let’s get started :-)SpecificationsConnectivity: Wireless ASK, 315MHz (or 433MHz)Parameters: Temperature, Humidity, Ambient LightWireless Coverage: 100 to 200m (with Antennas)Display: 4.3” Graphical, Capacitive-TouchInput Voltage: 7.5 to 9V-DC (power adaptor connector)
A camcorder hack and an OBD2 probe with a surprise inside! - Page 1
Forum section: electronics / general

author: FixOrBust
author_rank: Newbie
timestamp: December 25, 2022, 11:53:12 pm
content: Hello Finland friends!I've been on a bit of a hiatus since my first trembling attempts at YouTube fame () because of family related stuff, but am slowly finding the motivation to get back into making silly content again. I've released two videos as of late, a successful attempt at adding support for external audio on a very basic Canon camcorder (bodge warning!):And an exploration of a "cheap" Renault Clip probe with a really odd component mashup inside:I hope someone finds it mildly interesting!CheersAlec
PCB Reverse Engineering - Page 1
Forum section: electronics / general

author: Singapura
author_rank: Regular Contributor
timestamp: March 25, 2022, 03:08:27 am
content: For those interested in this niche topic, whether you're just starting out or a seasoned practitioner:https://visio-for-engineers.blogspot.com/2019/07/getting-started-with-pcb-re.htmlHappy exploring and hope you'll discover useful resources that will help you in this learning journey.Stay safe and well, my friends!

author: rakesh.hc
author_rank: Newbie
timestamp: March 16, 2023, 10:42:43 am
content: Without removal of component Is it possible to scan, what are the right/speedy methods to reverse engineering PCB mutilayer especially
New YT channel, now featuring a review of Micsig's new STO1004 scope - Page 1
Forum section: electronics / general

author: labmixx
author_rank: Newbie
timestamp: June 10, 2022, 06:01:02 am
content: Hi guys, I've started a unique electronics channel, which will probably polarize people somewhat since it will be pretty light-hearted haha. I have a bit of a background in video, so I can produce above average quality in terms of filming at least. I have a lot of videos planned out, which will cover some military and aerospace electronics, specialized computers, specialized hardware, various fun electronics demos, things that look cool visually, and occasional product reviews. Posting frequency won't be too high, maybe once every month or two, since unfortunately I have a lot of other responsibilities. I'll try to do a good job with each piece of content, though.I have the capability to do a lot of extreme filming, from super high quality microscopy, to slow motion, to high resolution thermal etc. So I'll integrate that into my content from time to time.I've definitely overextended myself with this first video because oscilloscopes are complex, and to do a decent review of one takes a long time. That said, at least it's done! I will speak slower and clearer in future videos, I definitely realized this mistake so far.If you have other suggestions/observations/thoughts, I'd be happy to hear them. I'd like to try and improve. I also just want to say thanks to everyone on this forum since your advice has saved me countless times. Now maybe I can entertain you in return.Micsig STO1004 review:

author: Markus2801A
author_rank: Regular Contributor
timestamp: June 13, 2022, 07:00:08 pm
content: Very cool, thanks! Already subscribed and commented on your video! I didn't even know Micsig has released a new version. I will have to do some research on what's new and what has been improved etc.

author: Bud
author_rank: Super Contributor
timestamp: June 13, 2022, 08:01:56 pm
content: Quote from: labmixx on June 10, 2022, 06:01:02 amEhmm... how about making your scene lighting better, your Experienced Filming Magesty?

author: blackfin76
author_rank: Regular Contributor
timestamp: December 10, 2022, 02:20:04 pm
content: Mmm... might be a candidate to become my 31st oscilloscopeOne can never have too many oscilloscopes, you never know when one may break down.Cognitive dissonance, do I really need one more oscilloscope? Yes you do.
How to digitize graphs from datasheets - Page 1
Forum section: electronics / general

author: ledtester
author_rank: Super Contributor
timestamp: December 13, 2022, 04:16:52 am
content: An instructive video on how to use the free WebPlotDigitizer webapp to extract data points from graphs to feed into a regression analysis tool like Excel. Has a lot of automation but with manual overrides.Link to the app:https://apps.automeris.io/wpd/
220V-AC to 12V-DC 18W Switching Power Supply - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: November 29, 2022, 08:46:09 am
content: Flyback is the most common circuit topology to build galvanically isolated AC to DC or DC to DC converters. Flyback circuit is cheap and relatively easy to manufacture, therefore nowadays the majority of home or industrial appliances are powered using AC to DC Flyback converters. In general, a Flyback converter is suitable for low-power applications, mostly below 100W.In this article/video, I designed a cheap AC-to-DC flyback converter using a DK124 IC that can deliver up to 18W continuously. I calculated the transformer to handle 12V at the output which can be easily modified to reach other output voltages as well. The DK124 chip does not need any auxiliary winding or even an external startup resistor. The 220V Mains input has been protected using a MOV, an NTC, and a Fuse. The PCB board is single-layer and all components are through-hole.To design the schematic and PCB, I used Altium Designer 22. The fast component search engine (octopart) allowed me to quickly consider components’ information and also generate the BOM. To get high-quality fabricated boards, I sent the Gerber files to PCBWay. To test the power supply, I used Siglent an SDL1020X-E DC Load, an SDM3045X Multimeter, and an SDS1104X-E/SDS2102X Plus oscilloscope.SpecificationsInput Voltage Range: 85 to 265V-ACOutput Power: 18W ContinuousOutput Voltage: 12V-DCSwitching Frequency: 65KHz
40V-30A Adjustable Switching Power Supply - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: September 29, 2022, 12:00:16 pm
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 main 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. A buck converter reduces/steps down the input voltage while increasing the output current.In this article/video, I introduced an adjustable buck converter circuit that can deliver up to 30A and handle up to 40V at the input. The output voltage is adjustable from 3V to 37.5V. Several PCB design rules were followed to enhance output stabilization and current handling, also to reduce the radiated emission, and noise figure.To design the schematic and PCB, I used Altium Designer 22 and the electronic search engine (octopart) to easily and quickly collect information about the necessary components. To get high-quality fabricated boards, I sent the Gerber files to PCBWay and finally tested the current handling, output stability, and noise figure using the Siglent SDL1020X-E DC load, Siglent SDM3045X multimeter, and Siglent SDS2102X Plus oscilloscope. Just build one and have fun!

author: JohanH
author_rank: Frequent Contributor
timestamp: September 30, 2022, 08:09:10 am
content: Impressive how low the ripple is at that current. Congratulations for a good design.I myself would be interested in creating a smaller buck converter design (lower current, smaller PCB). I might take a look at your design. I'm not experienced with switching power supplies, but you have to start somewhere.Did you do any EMI measurements?The cheap SMPS that you can buy online are famously noisy. One such SMPS was analyzed and improved by Elvee on the diyaudio forum (linking it here, because I thought the methods whereby he reduced EMI might be interesting):https://www.diyaudio.com/community/threads/smps-killed-my-radio-reception.373045/post-6683777I happen to have that same SMPS and did the same mods. I'm thinking some of the methods might work on a buck converter as well, e.g. grounding ferrite cores, grounding the heat sink, adding a ferrite bead on the output diode leg. But this is for sure things that would have to measured case by case.(To ground the transformer ferrite core, I scratched a small area on one side, glued a small wire to the side of the transformer with super glue and applied conductive paint on the scratched up area to make a connection with the bare wire in the same spot. This made a reliable connection that shows as a stable resistance reading when measured also elsewhere on the ferrite core).

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: October 01, 2022, 07:28:40 am
content: Thank you.I don't have a spectrum analyzer, so no EMI measurement, however, I expect to be okay, although you always have to put switching supplies inside a metal enclosure.
#22 Bringing the Mars SW 10 SWR meter back to life - Page 1
Forum section: electronics / general

author: Radio Tech
author_rank: Frequent Contributor
timestamp: December 31, 2015, 09:07:23 pm
content: #22 Bringing the Mars SW 10 SWR meter back to lifeIn this video I bring an old Mars SW-10 SWR meter back to life.This meter is covered in nicotine and has broken switches and a sticky meter.I decide not to do a cosmetic restore as I want the meter to retain it's nostalgic appearance.

author: SeanB
author_rank: Super Contributor
timestamp: January 01, 2016, 11:36:24 am
content: So how was the meter sticky, just nicotine contamination in the bushes, or something more like a bent pivot. Nice work there, getting the colour off, though I bet it still has the smell of cigarette on it. Just how many packs was the dead former owner smoking a day to get it that colour.

author: Radio Tech
author_rank: Frequent Contributor
timestamp: January 01, 2016, 01:42:46 pm
content: The meter was pretty much sealed up so not too bad . I think it was a combination of different foreign particles. Disassembled the movement and gave it an alcohol bath followed by a ultrasonic bath. To be honest, even before cleaning it really did not have much of a smell to it.

author: joeqsmith
author_rank: Super Contributor
timestamp: February 07, 2016, 12:34:51 am
content: Good job with the restoration.

author: xrunner
author_rank: Super Contributor
timestamp: February 07, 2016, 12:41:09 am
content: Excellent job!

author: sschreiber454
author_rank: Newbie
timestamp: September 30, 2022, 03:56:52 pm
content: Good morning. I know this video is very old but I was curious if you ever found the specs for this MARS meter? I have one just like it that I listed for sale on QRZ. I said in my ad I will entertain offers. One prospective buyer needs to know what the frequency range is (I'm assuming 80 to 10 meters), and how much power it can handle. The buyer obviously wants to use it with an amp. Thank you for your time.Steve
Video Lecture I made about PID heater control - Page 1
Forum section: electronics / general

author: longh
author_rank: Contributor
timestamp: September 20, 2022, 03:59:42 pm
content: Hey everyone,I made this video for a community college class I taught last year. The class was about industrial control, and I wanted something students could take home with them during COVID stuff. So I came up with the idea of using a power resistor as a heater, and developing different algorithms starting with simple/on off and eventually ending with PID control.This lecture is really dry, but talks about getting everything set up and running some simple experiments:-Hunter
Magnetometer Soft Iron and Hard Iron Calibration: Why and How - Page 1
Forum section: electronics / general

author: YTusername
author_rank: Regular Contributor
timestamp: December 16, 2022, 06:34:17 pm
content: HiI would like to share my latest article I wrote about magnetometer soft and hard iron calibration. The sensor QMC5883L was used as an example in the article.I hope you find it usefulArticle link:Magnetometer Soft Iron and Hard Iron Calibration: Why and How
#113 "Well theres your problem" PODCAST - Page 1
Forum section: electronics / general

author: 3roomlab
author_rank: Frequent Contributor
timestamp: September 17, 2022, 10:56:50 am
content: This is a rambling podcast (use of angry swear words included). In this episode, they are suppose to talk about battery operated trains, but as I found out, they rant about everything else as well, like how a flood destroys water pumps and 250000 people run out of clean water.But 1 of the most interesting things is that, they made many technical mistakes about the things they said.
Xgecu T56 programmer teardown and review - Page 1
Forum section: electronics / general

author: nikifena
author_rank: Regular Contributor
timestamp: February 21, 2021, 11:09:51 am
content: Hi everyone. I did a quick review and teardown of the new T56 programmer which is a step further from the well-known TL866 series programmers.I hope you enjoy the video:

author: masster
author_rank: Regular Contributor
timestamp: September 05, 2022, 01:45:21 pm
content: HelloI am interested in this "universal" programmer and I would like to know what are your opinions about it after 18 months.How much did you pay for it? Where did you buy it from?Most importantly, what about the adapters that should have come with it?

author: nikifena
author_rank: Regular Contributor
timestamp: September 05, 2022, 04:28:40 pm
content: Well, I haven't used it a lot. I just needed an universal programmer and a logic ic tester. That is why I brought it.I think it is good. No problems till now. I can't remember how much i paid. It was a long time ago. I ordered it from Aliexpress.

author: james38
author_rank: Regular Contributor
timestamp: September 05, 2022, 05:42:53 pm
content: I have mine bougt in July 2020 for 154Euro on Ali (also have the 866 II).It came with a handful of adapters Sop28,Sop20 Sop16 TSOP32-56.Have used it for some Atmega, EEprom ...It works as expected.Firmwareupdates comes nearly regulary.The so descriped amount of component that this device can handle is a little bit prettified.He counts every type on the same familly.But never mind it provides many devices and i have never seen an adaquate device which provides the same for the price.And not to forget that alle Updates are for free.I'm happy with it so farRegards Chris

author: Qw3rtzuiop
author_rank: Frequent Contributor
timestamp: September 05, 2022, 06:13:34 pm
content: Im happy with the T56 too. Bought this kit for 150€ 2 years ago.https://www.aliexpress.com/item/4000831163095.htmlNow they launched a new version of their TL866https://www.aliexpress.com/item/1005004419370100.html?I dont have it but its maybe sufficient for many.

author: james38
author_rank: Regular Contributor
timestamp: September 05, 2022, 11:06:46 pm
content: Regarding the adapter.There are many adapters which works with the t56.On ali you will find several combinations which will fit your needs for a few bucks.There is a special adapter.It is a VGA adapter that can also handles HDMI.With this one you can do some basic color tests to the monitor andreadout some parameters. Also you can programm the Monitor if it is possible. Very impressiv.A nice feature is also the logic-IC test. You will find there some basic ICwhich you can test based on a logic table. You can customized this and define your own.To get an overview on the capabilities what the programmer can do is to install the Software.When the software not detect an programmer he goes to demo modeThe new new T48 is a stripped down version of the T56. It replaces the TL866 II plus. A cheap alternative for 80 euros.However, I don't know exactly where the restrictions are for the T56, so you have to take a look for yourself.Regards Chris
Temperature & Humidity Control Unit Using a Raspberry Pi Pico - Page 1
Forum section: electronics / general

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: August 30, 2022, 01:24:42 pm
content: Raspberry Pi Pico is a cute piece of hardware. It is equipped with a powerful dual-core RP2040 microcontroller that offers 2M (up to 16M) Flash and 264K SRAM memories. Such specifications make it suitable for a variety of hobby and industrial applications.In this article/video, I used a Pico board, a digital SHTC3 sensor, and a 2.4” colorful TFT display to build a graphical temperature and humidity measurement/control unit that can be used to monitor the home, workplace, indoor garden, devices … etc. The board was also equipped with two Relays that allow the user to set the cooling/heating limits and adjust the parameters in the GUI.The trickiest part of this project was the Pico code. I used the Pico C/C++ SDK library and invested a significant amount of time in designing the GUI and debugging the code. I should confess it was not an easy task.To design the schematic and PCB, I used Altium designer 22 and installed the missing component libraries using Altium’s manufacturer part search. By using the Octopart website, I was able to quickly gather the necessary component information and generate the BOM. Finally, to get high-quality fabricated boards, I sent the Gerber files to PCBWay.It's a cool piece of hardware for anyone, so let’s get started :-)
Electrical Engineering YouTube Videos - Drone Related - Page 1
Forum section: electronics / general

author: rudleyfm
author_rank: Newbie
timestamp: August 29, 2022, 11:48:32 am
content: Hi - I am a retired electrical engineer and I have been putting up videos on YouTube.On YouTube, search for "Frank Rudley" to find these Videos.Also, I have a WebSite with links to these videos at "http://www.rudley.com" if anyone is interested.The WebSite also has support files for the projects shown in the videos.I specialize in embedded controls systems and guitars.I am currently building flight control computers for drones as a hobby.Thanks - Frank

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: August 29, 2022, 11:58:24 am
content: Hello, Frank.
How to Spot a Fake Soldering Iron 😮 - Page 1
Forum section: electronics / general

author: madires
author_rank: Super Contributor
timestamp: August 24, 2022, 01:28:27 pm
content: No surprise at all! It's the same for LED modules, wall warts and other stuff. Usually 2 - 3 Chinese Watts are 1W.

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: August 26, 2022, 10:07:11 am
content: Quote from: madires on August 24, 2022, 01:28:27 pmYes, but you know, I received some comments that I don't know anything and the rated power has no relation ... etc, but real professionals know why a soldering Iron is more expensive than another. Just use a solder wick and flux and try to suck some. none of these cheapies are able to do

author: madires
author_rank: Super Contributor
timestamp: August 26, 2022, 01:20:44 pm
content: Don't take such comments too seriously. Unfortunately it's part of the game. I agree, in most cases cheap irons lack thermal mass and tips don't last long.

author: SiliconWizard
author_rank: Super Contributor
timestamp: August 27, 2022, 06:46:37 pm
content: Yes, for some reason, vendors of cheap chinese soldering gear pretty much all grossly overestimate the rated power.I bought one of those very cheap "hot plates" on Aliexpress that you can get for a few bucks. It was rated 550W. Real measurements showed only about 200W peak. Max temperature was also a lie - claimed to be 250°C (or even 270, not even sure anymore) and turned out to be barely 220°C right in the center. So barely enough for desoldering jobs on lead-free stuff. Now it still does the job for small boards with not too much thermal mass, but why lie that bad? The price is rock-bottom, we know we ain't getting some high-end gear.

author: hesam.moshiri
author_rank: Regular Contributor
timestamp: August 28, 2022, 09:11:13 am
content: Quote from: SiliconWizard on August 27, 2022, 06:46:37 pmYes, this is the difference, why something is more expensive than another one. Unfortunately, some people still argue with me that my measurement is not scientific and all soldering irons are good because they get hot and do the job. low power irons (or fake rated irons) as you said don't have enough thermal mass for the required applications. sometimes it is clear from the size and thickness of the heating element.