Hi ,Jcf
Next please masure voltages according to ground(gnd) at pins rx, tx, vcc(5V) of the bluetooth module directly on it and let me know the result.
Does bluetooth module soldered directly to the red main board or is there black connector where the module is inserted?
When you connected it to wires at first time - was there a connection via bluetooth?
Последний раз редактировалось Pin; 11.03.2022 в 14:17.
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