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Topic: Servo power and signal voltage (Read 1 time) previous topic - next topic



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.



Mar 06, 2010, 09:45 am Last Edit: Mar 06, 2010, 09:52 am by srylul Reason: 1
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.


I have already bought the servos and built the platform for the robot so I will try with servos first.

What do you mean with Ack?



Sorry Anders,
I often write from my way of speaking...
Ack = Ackumulator = BatteryPack.

Servo_+ to BatteryPack_+ ,
Servo_- to BatteryPack_- to Arduino_- ,
Servo_Signal to Arduino_Output .


So you think it is ok to power the servo with 4.8V and give it a control signal of 5V?


No problem at all.
I fact, its common to feed the servo separatly .

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