Digital Multimeter 50200 50220 – Energy Concepts

https://archive.org/details/manualsplus_00584

This manual provides maintenance information for the Energv Concepts Digital Multimeter, Model No. 50200. Included are circuit board information, the various adjustments required, parts lists, schematic diagram, and other maintenance and troubleshooting information.

#instruments #tech #electronics #engineering

I'm looking for a data sheet for a very old RAM chip with the serial number CO20231-01. The Internet has failed me so far.

Can anyone in #electronics suggest a good place to ask?

Phoenix ARC’s “Coolmine” Radio Rally is on again — and we’ll be along as TOG (EI0TOG). 📻
If you’ve never been to a radio rally, don’t overthink it: they’re for anyone into electronics, tinkering, repairs, radio, or learning by chatting to friendly folks.

All the details + last year’s photos:
https://www.tog.ie/2026/02/tog-hackerspace-at-the-phoenix-arc-coolmine-radio-rally-2026/

#AmateurRadio #HamRadio #Makers #Electronics #Dublin

Woohoo! My DiyIrTower PCBs have arrived!

("Do-it-yourself infrared serial communication tower (compatible with LEGO IR serial tower)")

See also: https://github.com/maehw/DiyIrTower, https://github.com/maehw/WebPBrick/

#WebPBrick #KiCad #OpenHardware #electronics

Game Boy IPS Display Mod

https://wolfgang-ziegler.com/blog/game-boy-ips-mod

#electronics #maker

4 more PCBs soldered. Place solder paste, place components, wave hot air pencil over them while praying nothing blows away, watch shiny solder joints form.

Now I need to make the test fixture. I'll need to test hundreds more of these in the future. I'll use a Teensy to test them. It'll send signals in one side, and monitor the outputs. First as just signal tests, then it'll do data transfer tests.

#electronics #maker

Having done a few rides with DJI action cam my main complaint is buttons. I realize there's trade-offs for action, but man the power button is a bear. Hard to press and performs multiple actions: long press for power, quick press to change mode. Hello, I'm wearing winter gloves! 🙄

But that's not why I'm here, at least directly, did you know they have an SDK? They use it in their little camera remote.
Here's their demo code to get an ESP32-C6 to control the camera over BLE (low power bluetooth). One could make their OWN buttons!
https://github.com/dji-sdk/Osmo-GPS-Controller-Demo

There's a number of projects on github, including this little remote someone made to control DJI with motion sensor: https://youtu.be/t92D7x2sBuA

#electronics #SDK #actionCamera #BikeTooter

Leaded Solder vs. The Crazy 77

https://www.leadedsolder.com/2026/02/10/fujitsu-fm77av2-damaged-keyboard-controller-failure.html

#electronics #maker