ESP32: add 8 analog inputs over SPI with the MCP3008
The ESP32 loses half its ADC pins the moment Wi-Fi turns on. Add 8 clean analog inputs with a $4 MCP3008 over SPI: wiring, real pins, and a full 8-channel sketch.
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The ESP32 loses half its ADC pins the moment Wi-Fi turns on. Add 8 clean analog inputs with a $4 MCP3008 over SPI: wiring, real pins, and a full 8-channel sketch.