I hope this is the right area of the forum for this post. My apologies if not.
I have an Android app which controls two servos via the Arduino connected by a USB shield. I power the Arduino with a 9v battery and each of the servos by a 4 x 1.5v pack.
The phone is a HTC Desire HD and under Settings → Connect to PC I have selected Disk Drive as Default Connection Type. However, as soon as I connect to the Arduino it starts charging. I’ve also tried various other options as Default connection Type, but the phone always starts charging as soon as it’s connected and sucks power out of the batteries.
Does anyone know how to prevent this?
Thanks in advance.