To run the show, [g3gg0] selected the ESP32-PICO-D4. You certainly don’t need such a powerful microcontroller to read the impulses from the SBM-20 tube and publish them via MQTT, but to be fair ...

InnoSwitch3-EP family of off-line CV/CC QR flyback switcher ICs now feature 900 V PowiGaN switches.

Although that comes with a few downsides as well, with plenty of people feeling that the smart phone makes it a ... The phone uses an ESP32 at its core, with a SIM800L GSM modem to interact ...