Greetings from a new beginner🙌 - Page 1
Forum section: electronics / beginners

author: uul
author_rank: Newbie
timestamp: February 07, 2021, 04:23:15 pm
content: Hi everybodyI just wanted to say hi, I have been following eevblog youtube channel for some time.I think this forum is great, I learned which lcr and multimeter to get as my first ones.I decided to get Brymen 829s and DER EE DE-5000........And the first thing Ive learned was that the multimeter doesnt beep after a certain ohm value. My ESD mat has 1M Ohm resistance😂🙌I have some questions:1. What is the first thing in electronics that surprised you?2. Which youtube channel would you recommend for a beginner to advanced?- or a website with education. I am open to advices🙏3. What can you from your experience en electronics recommend me? It can be anything🙌My equipment:DER EE DE5000(LCR)Brymen 829s(Multimeter)Hakko FX888D(Solderingstation)Solder Peak SP-1010DR(Desolderingstation)

author: rstofer
author_rank: Super Contributor
timestamp: February 07, 2021, 04:32:43 pm
content: Quote from: uul on February 07, 2021, 04:23:15 pmHow much fun it is to get something working. I started about 65 years ago and it's been an on/off hobby ever since.QuoteObviously, Dave's channels and videos plus the videos of w2aew. Depending on where you want to go with electronics and where you are starting from, you may want to see khanacademy.org for help with the math.There are hundreds of sites, I'm sure all of them have something to say. I haven't tried them...QuoteFind a project that interests you and build it. Try to figure out how it works as you go along. When you run into bumps, ask questions. Somebody around here will have the answer.I like mechatronics (robotics) and uC projects that do something.Electronics has forked toward code - get an Arduino and see what you can do. Everything that can be done with that platform has already been done and it's all on the Internet. Get a Raspberry Pi 4 (or 400) and learn Linux as well as embedded computing.With the Pi 4 or Pi 400, get this kit and you can learn a LOT about electronics and computing:https://www.amazon.com/gp/product/B06W54L7B5ETA: And welcome aboard!

author: uul
author_rank: Newbie
timestamp: February 07, 2021, 07:11:57 pm
content: Thank you very much for the insightful reply. I appreciate it.I like audio, amps and dac. I think my first project it going to be a cmoy amp. Or maybe a bench psu. But I am not in a hurry. I havent even ordered af breadboard yet. So I am building up my workshop one at a time.QuoteThanks alot for this, I always watch Dave´s yt channel, he is awesome. I havent heard of the khanacademy.org website. Thanks alot it has been bookmarked :-)My dream is to finish a project with dac amp and bluetooth device. I have heard alot about the Arduino and I find it very interesting. Raspberry pie I havent really used it for other than a pfsense firewall hehe :-)Arduino or Raspberry one of the are definitly going to be in my projects.Thanks a lot for the suggestion and advices.This is an awesome forum

author: rstofer
author_rank: Super Contributor
timestamp: February 07, 2021, 07:28:37 pm
content: I linked that Freenove Ultimate Starter for Raspberry Pi Kit above. I didn't say anything about the quality of the tutorials. They are simply OUTSTANDING.Download and skim through this document (tutorial.pdf) and see if there is anything of interest.https://github.com/Freenove/Freenove_Ultimate_Starter_Kit_for_Raspberry_PiNote the level of detail.I test the value of each resistor rather than relying on the color bands. Partly because I have defective color vision and partly out of habit.You can use this chart:https://neurophysics.ucsd.edu/courses/physics_120/resistorcharts.pdfAll of the code and the build instructions are given for every experiment. I have tried many of the experiments and they all work when I follow the instructions.There are many other areas of electronics but, sooner or later, you need the stuff you learn in this kit.There's a similar kit for the Arduino and it might be an easier place to start. Linux doesn't get involved but you also don't get the features of Linux.https://www.amazon.com/Freenove-Ultimate-Compatible-Solderless-Breadboard/dp/B08B4D5MV5Here is the tutorial:https://github.com/Freenove/Freenove_Ultimate_Starter_Kit/blob/master/Tutorial.pdfEither way, there is a lot to learn from these kits.

author: rstofer
author_rank: Super Contributor
timestamp: February 07, 2021, 07:37:52 pm
content: If you want to play with Bluetooth BLE, I would highly recommend the PSOC 6 BLE Pioneer Kit. It's kind of an advanced topic but, what the heck, go for it. There is an entire set of videos around this board called PSOC 6 101.https://www.cypress.com/video-library/PSoC/meet-psoc-6-ble-pioneer-kit/528136https://www.cypress.com/training/psoc-6-101-chapter-1-getting-started-psoc-6-mcusOTOH, there are many 'gadgets' that present as Bluetooth over the air and a simple serial port to the microcontroller. I don't have any experience with these.https://www.amazon.com/s?k=bluetooth+serial+adapter&i=electronics

author: uul
author_rank: Newbie
timestamp: February 07, 2021, 08:32:45 pm
content: Wow thanks man!I can wait to get started. I only need to finish my Fume extractor, and then I will order all the good :-)I have looked into the fume extractors and the one I want is too expensive I couldnt find the Dave had in his review. Kingsom 180. So I make my own

author: tunk
author_rank: Super Contributor
timestamp: February 07, 2021, 09:37:18 pm
content: Here's a few youtube channels that I find educational/entertaining:Big Clive, Diodegonewild, Pileofstuff, LearnelectronicsYour next hardware step could be a power supply.

author: rstofer
author_rank: Super Contributor
timestamp: February 07, 2021, 09:50:52 pm
content: I don't have a fume extractor but if I wanted one I would probably just buy it. The Hakko might be my first choice but there are less costly units available.https://www.amazon.com/s?k=soldering+fume+extractorYou mentioned building a PS. Those projects are not universally successful. I bought a Rigol DP832A but that is clearly over the top. It's a great supply that doesn't get a lot of usage.https://www.amazon.com/Rigol-DP832A-Channels-Programmable-Supply/dp/B00EP9I086I got along for a few decades without spending money on a fancy PS. I don't regret buying the Rigol but I have to say, I got along with batteries and fixed voltage supplies for a very long time. Sure, these new units have very fancy features, like current limit (which I use extensively), but there's a reason they are pricey and I seriously doubt that any DIY PS is going to be anywhere near as capable.Search around eevBlog, there are dozens of 30V 3A PS designs/projects. It's like 90 Watts is a real thing. Times 2 when you have a dual output plus another 15W when you throw in the 3rd channel of 5V 3A. Where in the world could you possibly need 200 Watts today? Entire computers are less than 15W (Raspberry Pi 400). When you search, you will see that very few designs are successful (I haven't seen any but I don't want to discount the possibility) but mostly you find that DIY designs oscillate or don't control very well. Transient response is suboptimal. There's a reason that commercial supplies cost a lot of money and it's not all just greed. That new Siglent seems interesting and is a lot less money.You can check over in the Test Equipment forum to see what people think.https://www.amazon.com/Siglent-Technologies-SPD3303X-Triple-Output/dp/B01410O424In the uC world almost every board is powered by USB from a computer or, better, a powered hub. For motorized projects, rechargeable batteries power the motor and USB powers the logic. Or, it all runs on batteries.You do need a 5V supply and a 3.3V supply but one of these breadboard units does a dandy jobhttps://www.amazon.com/s?k=breadboard+power+supplyOne is included in that Ultimate Starter Kit.It would be far more realistic to limit the PS current to 1A and use fixed voltage linear regulators like 7805, 7812 or, for 3.3V, LD1117V33. The LM317 has quite a following for variable supplies.You can use 7815 and 7915 to build a +-15V supply for op amp circuits if you are using dual supplies.Power supplies based on these regulators won't have the features of a bench PS but they won't have the cost either.Here's a simple +-15V PS for op amp experiments:https://www.jameco.com/z/PD-2515-MEAN-WELL-Power-Supply-Dual-Output-Open-Frame-15V-1A-Negative-15V-1A-24W_2100857.htmlI realize you are in Sweden and I'm in California so the links I provide might not be entirely useful but they should give you something to look for locally.

author: IamSynthetiC
author_rank: Regular Contributor
timestamp: February 07, 2021, 10:26:23 pm
content: Hi and Welcome to the forum!!!Quote from: uul on February 07, 2021, 04:23:15 pmI would say the capabilities. Once you start to undertand how things work, especially if you can code a microcontroller such as an arduino. You start saying to yourself "i can build this" and "i can build that".Quote from: uul on February 07, 2021, 04:23:15 pmAs rstofer has allready mentioned, find a project you like, and build it. The struggle will involve you in the subject and push you to learn more. When in trouble, remember, there are no stupid questions here in this forum, and you'll find that people here are kind, helpfull and patient. So aim for something, and ask when in trouble.Microcontrollers play a huge part in today's electronics, when you have the time, suit yourself to an arduino and play around with it.

author: RJSV
author_rank: Super Contributor
timestamp: February 07, 2021, 11:57:57 pm
content: My early memory: 1968 and I made an (attempt) to build a Leslie (it's trade-marked) speaker, normally associated with Hammond Organs, like the 'B3'.The Leslie horn rotates, looking like a trumpet on a platter, but I tried using a couple of shampoo tubes, to emit the sound. I guess my point is: I had very little idea that industrial stuff, motors, speakers, amps, etc. could be built at home, it wasn't some impossible magic the big factory guys had!Everything is DO-able, within reason, that's what technological opportunity (can) mean! Thank you

author: rstofer
author_rank: Super Contributor
timestamp: February 08, 2021, 01:05:38 am
content: Dave did a review of this RD6006 PShttps://youtu.be/0qjLx_HsKUQThe unit:https://www.aliexpress.com/item/4000282551930.htmlIt's an inexpensive buck mode power supply but you need to provide the raw DC input from 6 to 70VDC. The maximum output will always be a few volts less than you supply.Dave mentions that he messed up the noise measurement but I didn't see a correction.At first glance, I didn't see a reference for the internal power supply. It is shown all over the AliExpress site but nowhere did I see a place to buy something that is even close to 70V. I'm not even sure that a 70A unit would fit in the case. More research required.Maybe 24VDC would be just right for producing 15V output for op amps. I would probably see if a 24V 3A module would fit in the case. I have no use for voltages above +15VDC - but that's just me!If you search for RD6006, you can find several references.

author: rstofer
author_rank: Super Contributor
timestamp: February 08, 2021, 01:49:31 am
content: You can search eBay for old dogs like this:https://www.ebay.com/itm/Bench-Power-Supply-30V-2x3A/324476928607?hash=item4b8c55025f:g:rM8AAOSwBT1gC334There must be something similar in your area.Shipping is a costly addition on heavy units like this.

author: uul
author_rank: Newbie
timestamp: February 08, 2021, 10:47:11 am
content: Thank you very much for the replies. I cant wait to read them when I get home :-)When it comes to fume extractor I am very picky. I will post pictures here when I am finished. There will be three different filters. G3 F5 and Active carbon before the fumes hit the HEPA.Calll me whateverI have a Noctua Industrial 24V 3000rpm fan in the end. I dont know nothing yet

author: uul
author_rank: Newbie
timestamp: February 08, 2021, 03:40:28 pm
content: I am so thankful for all your respondses.I am bookmarking all the advices. I have so much to learn.So much good reads. You guys are awesome🙏

author: pqass
author_rank: Super Contributor
timestamp: February 08, 2021, 04:40:43 pm
content: Quote from: uul on February 07, 2021, 04:23:15 pmAfrotechmods for basics.https://www.youtube.com/user/Afrotechmods/videosLook for Collin Cunningham videos for Adafruit or Make Magazine for well produced basics videos.https://www.youtube.com/results?search_query=Collin+CunninghamCuriousMarc for real world repair and problem solving, especially the Apollo AGC series. Also, vintage test gear porn.https://www.youtube.com/user/mverdiell/videosKen Shirriff's blog for electronics archaeology. Not basics but very well researched and accessible articles.www.righto.comQuotehttps://sound-au.com/is the ultimate audio site. Many articles and projects are fully explained.Like this one:https://sound-au.com/project113.htmI use it to power my bookshelf speakers.

author: uul
author_rank: Newbie
timestamp: February 08, 2021, 04:46:23 pm
content: Thanks🙏So many great replies.I can not wait to finish my fume extractor so I can get started😊👌🙌

author: uul
author_rank: Newbie
timestamp: February 15, 2021, 09:02:20 pm
content: Finally finished the fumeextractor.I need a good compact drill(also screwdriver) for holes to potentiometer.I have been looking around for a compact one.Any recommendations?