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HC 42 6pin Bluetooth 5.0BLE Serial Port Module PWM DC Motor Speed Controller Stable 15W output eliminates Stable 15W output eliminates undervoltage throttling and the lightning bolt warning icon on your Pi Display Drivers Decade counting for 7 segment displays 0 BLE protocol which is fully supported by both iOS and Android platforms open a Bluetooth terminal application on your smartphone or use a BLE serial port application to establish a connection
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