I'm using Arduino Uno + Hc05 within the guitar effects chain that is between guitar and amplifier. It happens that the blinking of the LED on HC05 is also transmitted to the output of the loudspeaker from which comes an annoying pulsation that I would like to eliminate.
In fact, if I power off the HC-05, the bluetooth switches off, the LED goes off and the pulse disappears.
I tried to put a 100 uF capacitor in parallel to the power of the HC05 but I did not solve anything and the pulsation...
HC-05 and annoying pulsation
In fact, if I power off the HC-05, the bluetooth switches off, the LED goes off and the pulse disappears.
I tried to put a 100 uF capacitor in parallel to the power of the HC05 but I did not solve anything and the pulsation...
HC-05 and annoying pulsation