@teastain a grade questão, é que essa distancia é de 20 a no maximo 30cm.

Good afternoon again to everyone in the group! I have an M5Cardputer and developed a jammer for it. My intention was to use the Bluetooth blocking function. Through the Bruce software, the device is recognized and works, but only at a very short distance. I would like to know, based on your experience, if this could be a hardware issue, wiring problem, or if I need to modify the code in Arduino. If modifying the code is necessary, could someone assist me? Thank you all in advance!