Why and how to replace electrolytic capacitors in vintage computers -- my VCF Midwest 2025 talk www.youtube.com/watch?v=iMRC...

Build an MP3 audio player with #CircuitPython and parts from #Adafruit ! This personal music player features a tft display and mechanical key switches. Learn guide: learn.adafruit.com/walkmp3rson-... youtu.be/fgalBx2QSJ0 #3DPrinting

Before there were multimeters, there was the galvanometer. Born from Ørsted’s magnetic needle experiment, the galvanometer became the 19th century’s essential instrument for detecting and measuring electricity. This is the story of the Galvanometer. emedia.digikey.com/eMagazine-Vo...

Just came across Visashot - A Python tool to create beautiful screenshots from vintage test equipment. Up to 120 instruments supported. damien.douxchamps.net/elec/visashot/

TDK introduced a 1uF, 100V capacitance in an EIA 0603-sized case. The press release suggests it targets 48V systems (like data centers.) At 50V, the effective capacitance isn't even 200 nF. product.tdk.com/en/search/ca... That DC bias effect is real.

Before PDFs, you could order a Microfiche version of test equipment manuals to stay up-to-date.

A fully open-source alternative to the Analogue Pocket is coming to a Crowd Supply campaign. Game Bub targets GB, GBC, and GBA games. It's an FPGA-based emulation platform. And it looks pretty slick. www.crowdsupply.com/second-bedro...

Maker News June 2025 Update. Lots of cool stuff to check out from great makers: Kayaks on treadmills, rogue sparks in shielded boxes, and a payment terminal that gives up root in 30 seconds makernews.substack.com/p/maker-news...

The RP2350pc appears to be an open-source single-board computer from @Olimex, based on the RP2350 microcontroller. Their shop lists it at 25 EUR. bald.ee/rp2350pcolimex

GuitarML on Github created an ESP32/Arduino-based Space Station Tracker. Add 2.8" LCD and watch its path around the world. github.com/GuitarML/Spa...

CT Scan of Switch 2 (Animated GIF), including the Tegra SoC via Reddit: www.reddit.com/r/nvidia/com...

If there were a real-life Undo button... mine would have broken by now.

This photo of magnetic core memory popped up, taken by Ansel Adams. I investigated a bit: this memory holds 4000 bits, each stored in a tiny magnetized ferrite ring. It may be from an IBM 705 vacuum-tube business computer. 1/N

Found an LLM for the Commodore 64 (with 2MB REU). It isn't a chat bot, but it will tell you a story... like a 3 year old. github.com/ytmytm/llama...

Thinking of 3d printer hubs, I know of Thingiverse and Printables. What other ones are popular?

Mountain View Reverse Engineering (mtvre) meetup Wed the 14th at Wagon Wheel BBQ, 7:00. Talks pending. See you there! www.meetup.com/mountain-vi...

For any given PCB design, I have a few ideas of what might fail. I add a legend along the break off rail so I just circle any issue detected by the smoketest. This makes test and rework quicker. (Ideally there would be no issues and no rework but I'm not THAT good 🫣)

First time playing with a linear actuator. Controlling it with a UM FeatherS3 and an Adafruit Motor Featherwing.

No. Way.

I’m really stepping up with this LSM6DSV CircuitPython driver *rim shot* @anneb.bsky.social (hopefully publishing the driver soon, potentially contributing to the official LSM6DS driver 👀)

I'm scouring the interwebs to find the best content relating to Python on hardware. Please consider signing up so I can show you one of the best resources on the galactic internet.

Is there a browser plugin that will add "-ai" to google searches?

PJRC is partnering with @sparkfun.bsky.social for manufacturing of all Teensy products. We’re taking step with 2 main goals. 1: SparkFun has the manufacturing needed for Teensy's growth. 2: PJRC can renew focus on software & community. pjrc.com/sparkfun-to-... news.sparkfun.com/13308

There's lots to look forward to at #OHS2025 like Alessia Romani's talk on RepMat, an Open Source Materials Library designed to share circular sustainable practices on new materials and technologies, especially 3D printing!

A coworker had the idea of making this resistance decade, then somebody decided to make a whole bunch of them and hand them out at different locations (and at customers). And now the gerber files are available for download! […] [Original post on mastodon.social]

Come and see us at @oshwassociation.bsky.social Summit in Edinburgh May 30-31! We’ll have a stand, showcasing products past, present, and future! 🎉

what uhh exactly is this thing for?

A nice write up about the so called ESP32 backdoor Of course it is a nothingburger... but eh anything to raise FUD about chinese chips.... and let's just keep ignoring the blatant security issues in Intel's ME and AMD's ST... darkmentor.com/blog/esp32_n...

New achievement stickers are now available! Excited that these have arrived and I had a great time adding these into my Skill Seeker book.

So this just happened... #TinyWATCHS3 Revision P10 - First panel paste and final assembly after reflow. I still have to finalise the new case, but this will be back in stock VERY SOON! #maker #manufacturing #opensource #esp32s3 #watch

Leave me some greeting on my "/Uploads/- Put Greetings Here!" share out on RonsCompVids zone on #GlobalTalk! Happy #MARCHintosh!

Alpenglow Industry's Carrie Sundra has designed a clever adapter board that turns coin-cell battery footprints into USB power inputs.

What do you consider to be "high voltage"?

Bored? Midwest? Need your #reverseenginering? The Mad EE group is hosting Dmitry Grinberg March 12. Madison Wisconsin Central Library, room 104, 6:30-8:30pm Come on our, meet some other local hw/fw/sw peeps. Space is very limited so dm me if you are coming.

Join @helenleigh for a livestream with Zeke Wheeler this Thurssday at noon PT www.youtube.com/watch?v=uqiI...

By me for @hacksterio.bsky.social, “The return of Pebble: you can’t keep a good watch down!” Some thoughts on @ericmigi.com’s announcement and the return of #Pebble. www.hackster.io/news/the-ret...

Using p5.js to map the vertices of the truncated icosahedron build. I'm always too lazy to make 3D mapping part of a project's design phase and I always regret it later on!

looking back, AOL had it right. 30 hours of internet per month was the right amount.

Precision Solder Pasting... Not so good on the photography ;) #electronics #manufacturing #technique

Paid my first tariff tax this week on order of PCBs for JLCPCB. My boards were $40 and tariff tax was $12 😡😡

Really?

this is the uA702, the first commercial analog chip (an op-amp). it was designed by the legendary Bob Widlar and went on the market in 1964 for $300 each. that's $2500 adjusting for inflation!

Electrochemical hour meter. (Saw it on Reddit). Current electrolyzes the mercury, which creates a moving dot... over time. www.reddit.com/r/AskElectro...

I transcribed the circuit an AI model gave me. Looks legit, doesn't it? Stop asking AI electronics questions.

A plea from a DMM manufacturer.

For the #makergiftexchange last week with friends, I made a POV clock. Using one RGB LED and a seven segment display, it draws up to 21 characters and a full circle of 180 virtual pixels on a spinning circular PCB. Loosely inspired by Bob Blick's "Propeller Clock." 🧵1/3

This isn’t everything I have that runs CircuitPython. It’s just what I currently have in arm’s reach. Because, reasons.

What in the absolute fuck is this

Circuit Python makes 4.81 megabytes seem like an infinite space on a microcontroller. Like the first time I used a 1.44 MB disk after years of 400 kb .