Hackaday (unofficial) September 24, 2024 9:00am Replacing Selenium Rectifiers #radiohacks #repairhacks #mosfet #selenium #vintageradio #hackaday posted by pod_feeder_v2 Replacing Selenium Rectifiers Old radios often had selenium rectifiers to convert AC to DC. The problem is that the old units, dating back to 1933, are prone to failure and to release dangerous chemicals like hydrogen selenide.…
Hackaday (unofficial) April 16, 2023 3:00pm Timeframe: The Little Desk Calendar That Could #arduinohacks #homehacks #calendar #eink #pillow #platformio #python #selenium #hackaday posted by pod_feeder_v2 Timeframe: The Little Desk Calendar That Could Usually, the problem comes before the solution, but for [Stavros], the opposite happened. A 4.7″ E-Ink screen with integrated battery management and ESP32 caught his eye, and he bought it and…
Hackaday (unofficial) September 28, 2022 12:00am A Solar-Powered Point-and-Shoot, circa 1961 #teardown #35mm #analog #aperture #camera #exposure #fstop #film #movingcoil #pointandshoot #selenium #shutter #hackaday posted by pod_feeder_v2 A Solar-Powered Point-and-Shoot, Circa 1961 Try to put yourself in the place of an engineer tasked with building a camera in 1961. Your specs include making it easy to operate, giving it automatic exposure control, and, oh yeah — you c…
