My MHF ESC beeps once but then I get nothing- whats wrong?
All our ESC’s use a similar arming sequence – the first beep/ light/relay click means that the program is running. The next step counts 50 reciever pulses. After 50 good RX pulses the the ESC sets the null point to it’s memory . The ESC then beeps/lights the LED/clicks the relay again – and waits 50 RX pulses, then sets the full on point – either from the pulse width or if it has not changed by loading default values. So no second beep means no pulses are being received from the Receiver I have twin ESC’s, running through an Amix mixer The drive pulses sometimes. Oh two motor batteries one on each ESC and no BEC. This was an interesting one!! The final cause was that the two ESC’s were running from separate batteries with no common. All BEC Esc’s have a common ground between the battery side and the radio side. If the supply batteries are separate and the ground is not connected together then current can and will flow along the ground lead from one ESC – into the mixer and through the
