I am trying to control some servos (futaba3004) using my Arduino 2650. I can plug a single servo into the Arduino power and ground circuts and using an example sweep program I get everythng to work as it should. However when I switch the servo power over to a wall wart power supply and I run my arduino sketch the servo goes to one extreme of travel motion and stalls there.
I have tried different power supplies (2)
Tested output voltage on both supplies and they are within the expected range. (1) 5.18Vdc (2) 6.181Vdc
Tried 4 different servos
I have tied the Servo ground the Adrino ground and the power supply ground together on my breadboard but alas same problem.
Is there an issue using a wall wart to power the servos like ripple or noise?
If you provide a wiring diagram, there’s a better chance someone will be able to help you.
Also, try powering the servo from a suitable battery, rather than a wall wart. If that works, then the wall wart’s worth investigating. If using an external battery gets you the same behavior, I’d look at the wiring, not the power supply.
I found when I was hooking the gnd to the Arduino from the servos and the external PS I was hooking it in the Gnd on the power header not the signal header :oops:
As soon as I moved the wire it took of and has been working fine
