How often have you pulled out old MCU-based project that still works fine, but you have no idea where the original source ...
XDA Developers on MSN
I built a cheap music-controlled RGB LED strip with ESP32 and it's better than any store-bought one
Smaller budget. No app or cloud.
The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Sometimes you need to control ...
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