I want to make a self-balancing robot with Futaba continouos rotation servos. I would like to power the servos from 4XAA 1.2V batteries since they might draw to much current for the Arduino. How do I get my control signal to the servos to the correct voltage. The servo VIN pin will get 4.8V while the output from the Arduino will be 5V.
Principal:
Servo_+ to Ack_+,
Servo_- to Ack_- to Arduino_-,
Servo_Signal to Arduino_Output.
Just remember; AA cells dont last long before recharging.
And you cant adjust servo speed. Well, not really. Just sort of. Eh, I will explain later if you are interested.
Why not use small rc bruschless esc-motor combos instead? And LiPo cells? If you havent bought the servos yet, its almost the same money.