ESP32 Metal Detector
BLE Library https://github.com/nkolban/ESP32_BLE_Arduino
Forum http://www.geotech1.com/forums/showthread.php?24589-ESP32-Metal-detector
BLE Library https://github.com/nkolban/ESP32_BLE_Arduino
Forum http://www.geotech1.com/forums/showthread.php?24589-ESP32-Metal-detector