/r/electronics

Photograph via snooOG

Discussion and news about component-level electronic circuits.


A subreddit dedicated to news, articles and general discussions related to the field of electronic engineering.

CLICK HERE FOR CHAT ROOM

Rules

  1. Be civil: Do not insult fellow Redditors. Do not yell. As this is a professional sub, act and speak professionally.

  2. The focal point of a submission must be component-level electronic engineering, design, news, and circuits (with at least one active element: a semiconductor or a vacuum tube/valve). See below for off-topic subjects.

  3. No commercial or promotional posts: advertising, endorsing or praising a company, fundraising and crowdfunding, giveaways, sponsored products and services, selling, offers, product announcements and information, blogs, videos, pictures of / links to commercial boards. Applicable even if free or if submitter does not benefit monetarily. This sub abides strictly to Reddit's Rules of Self-promotion. [Post offers related to electronic engineering in /r/ElectronicsList]

  4. Add a flair your submission.

  • 'Project' must link to full (non-commercial) build instructions. Otherwise, use 'Gallery'.
  • 'Tip" is for tricks and suggestions useful to the electronics designer

Off topic

  • 2a) Ready-made electronic assemblies (e.g., a Single-Board-Computer - Arduino. PI -, a relay module, a computer mouse); projects that are based entirely on such ready-made electronics assemblies (e.g., a green-house watering system that uses an Arduino and no other electronic components)
  • 2b) Plain electrical components and circuits (no active components), such as transformers, relays, resistors, light bulbs, cables, batteries, connectors, sensors)
  • 2c) Consumer products (marketed as "electronics") or self-made products, even if historically significant. Do not post an enclosed assembly just because it contains 'electronics' internally
  • 2d) Questions [Ask questions about electronic circuits and components in /r/AskElectronics]
  • 2e) Memes (pictures w/text), low effort ("shit-posts"), as decided by the mods. [If about electronic circuits and components, post in /r/ElectronicsHumor]
  • 2f) Labs and test equipment [If electronics, post them here on a Wednesday. No submissions that may be considered to be focusing on equipment brands rather than technical merit. One submission a week max.]

---- Click HERE for our Wiki ----

Tags / Flairs

Please categorize your post by clicking the "add tag" (flair) button after submitting it.

Click a tag name below to view just the posts in that category

CLICK HERE TO RESET TAG FILTER

Gallery

General pictures or videos related to component-level electronic engineering (See posting Rule #1).

Videos with commercial content or sponsorship/patronage requests are likely to be removed; repeat offenders may be banned from the sub. If in doubt, contact the mods before posting.

General

Electronic engineering-related posts that don't fall into any other category.

News

An electronic engineering-related news article or announcement.

Project

Show us your (or someone else's) electronic circuit design and/or final build.

If you are just posting pictures or videos with no further write-up, please use the 'Gallery' tag.

Videos with commercial content or sponsorship/patronage requests are likely to be removed; repeat offenders may be banned from the sub. If in doubt, contact the mods before posting.

To qualify as a project, the details available should allow someone else to make a copy.

NB: This is for original work - pictures of stock kit builds will be deleted.

Tip

A useful or insightful technical note on component selection, circuit design or testing etc. - something beyond 'stick decoupling caps everywhere'!


Related subreddits

Electronic circuit design and repair questions go in /r/AskElectronics

View and contribute to our wiki page for beginners

Banner from original picture by Sergej Klammer (/u/zappadoing). Used with permission. Licence: CC-BY-SA*

(please edit!)

/r/electronics

1,099,492 Subscribers

94

My first DIY robot

11 Comments
2024/06/26
19:33 UTC

15

Nixie Clocks a friend built - He does all kinds of cool electronics

3 Comments
2024/06/23
23:31 UTC

617

Capacitors are beautiful...

55 Comments
2024/06/22
23:21 UTC

0

Weekly discussion, complaint, and rant thread

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

10 Comments
2024/06/22
15:00 UTC

41

My little setup

A few things I have bought in the last couple of years

5 Comments
2024/06/20
01:54 UTC

84

E cig led display pinout (charlieplexing)

28 Comments
2024/06/19
16:16 UTC

73

My First Full Color Silk Screen PCB

It came out really nicely - the keyboard is silk screen printed over capacitive touch pads:

https://preview.redd.it/upfc96vd247d1.png?width=728&format=png&auto=webp&s=8ac7c66d821111b10bbc1b03cd8bb29fdb38a60c

It looks even more impressive in person. There are a few more details here, but the actual process of getting the boards made was pretty painless. Just needed to send a PDF with the artwork and some guidelines on where it should be printed.

9 Comments
2024/06/17
10:44 UTC

9

Weekly discussion, complaint, and rant thread

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

6 Comments
2024/06/15
15:00 UTC

31

Annual Clock: Experience Time on a Wider Scale!

https://preview.redd.it/m2aqyzoa5l6d1.png?width=2160&format=png&auto=webp&s=31b0c6a3c1cae1a47e7c9ccb77d134f13fd3f422

https://preview.redd.it/9bq51kdg5l6d1.png?width=3840&format=png&auto=webp&s=57b83cbfeb1f0c80bbc5aa9fe99b738570b1045b

My first electronics project was an annual clock based on something I saw on kickstarter a while ago. The clock slowly advances ~1-degree a day and you can see the year progressing in a whole different way. Just in the 3 weeks I've been working on it has advanced 20-degrees and it gave me an interesting perspective on what % of my year went by in a very intuitive way,

It was a great learning experience and got help from this community too--thanks! If anyone is looking for a simple project that has a fun deliverable, take a look. I think it'd be perfect for STEM programs starting at middle school.

https://www.instructables.com/Annual-Clock-Experience-Time-on-a-Wider-Scale/

I am definitely open to feedback for any part--hardware, software, instructions, etc--so please share anything that you think would help get more people to be successful with projects like this!

17 Comments
2024/06/14
19:05 UTC

2

Made this absolute abomination while trying to debug why the LSE wasn't working on my newly developed STM32 dev boards... Took a bit of trail and error adding caps to find a value that worked! RTFM, I learned the hard way how to spec the caps for an external resonator

6 Comments
2024/06/13
10:08 UTC

11

r/ROMarchive is now open

r/ROMarchive is a subreddit for archiving all types of ROM chips contents to make sure they won't be lost forever.

2 Comments
2024/06/10
16:55 UTC

18

Built 1 micron precision measurement tools

https://preview.redd.it/3xmb1xn38d5d1.jpg?width=1477&format=pjpg&auto=webp&s=c785bee1b3e19df4cb8a9a478bab96ffaba95564

I'v built a circuit that use PIC mcu and CCD to measure the width of things (tube) without using micro meter. the result is quite good. However there's a little point I'll improve later. just to make it best tools.

0 Comments
2024/06/08
15:26 UTC

2

Weekly discussion, complaint, and rant thread

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

2 Comments
2024/06/08
15:00 UTC

114

Component abuse 🤣😂

Bit of a laugh... Random sh&t post...

Knocked up a quick and dirty UV light to try and cure some Chinese solder mask... (Don't ask lol) Running a LOT of UV LEDs And an LM317 with no heatsink... it's dissipating rather a bit of power... 24v supply 🤣

In fact I expected it to blow up 10 mins ago...

Currently sitting on 135degrees C. I could heat my damn coffee on it...

Yet it's still working... Damn... 😂🤣😂🤣😂🤣

12 Comments
2024/06/05
15:06 UTC

10

Weekly discussion, complaint, and rant thread

Open to anything, including discussions, complaints, and rants.

Sub rules do not apply, so don't bother reporting incivility, off-topic, or spam.

Reddit-wide rules do apply.

To see the newest posts, sort the comments by "new" (instead of "best" or "top").

2 Comments
2024/06/01
15:00 UTC

303

So strange to see USB-C and DIP8 in the same board 😅

This is an attiny85 based IR interpreter i made, it is completely open source (repo and patreon on first comment). The board works, and quite well actually. Planning to distribute some pre-assembled board after a bit of testing. But now it’s time to design a case!

57 Comments
2024/05/31
12:59 UTC

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