[JBotAlan]

Please don't take this the wrong way; I speak from personally having done this several times: change your battery out for a fresh one. With a dead battery, the control system will boot up and work when idle, but as soon as you touch the joystick or the compressor turns on, the voltage will dip, causing the control system to turn off for a moment, then come back up.

It could be something else; if a freshly-charged battery doesn't cut it, let us know and we'll help.