I'm trying to control some servos (model: Turnigy TG9e) using Arduino. I power them from an external power supply (5V, 3Amp) and not forgetting to make a common grounding. This works fine.
The problem is whenever I press the 'reset' button (on the Arduino), the servos are twitching fast all the way to one end which is a total disaster in my project :-/
I tried the following: (1) adding a resistor between the output pin and the servo command input. same problem. (2) adding a resistor between the servo command input and the ground. same problem.
what am I missing ?
ps: I also noticed that without ANY input signal to the servo (just power and ground), when I touch its signal wire - the servo still twitches...