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Topic: how many servo? (Read 679 times) previous topic - next topic

Hi everyone,

arduino uno can support up to 20 servos (or more)?
I have electronic blood !!

johnwasser

http://arduino.cc/en/Reference/Servo

"The Servo library supports up to 12 motors on most Arduino boards and 48 on the Arduino Mega."
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cr0sh

I'd personally go with a serial servo driver board, like those offered by Pololu (http://www.pololu.com/catalog/category/12). With them, you can potentially control over 100 servos, each addressable. The boards can be daisy-chained to allow you to control multiple servos, and you only need a few pins for control. The only downside is that there isn't (?) a simple library for using them, but Pololu does provide interface code that is fairly easy to understand.
I will not respond to Arduino help PM's from random forum users; if you have such a question, start a new topic thread.

if I use shift register? I can control 20 servo without noticiable slowdowns?

I build a robot (the blue is servo)

basic is: 20 servos, arduino uno, gyroscope

I have electronic blood !!

A shift register to control a servo? Don't think that will work... You could use an IC like the TLC5940 to control servos.
http://bildr.org/2012/03/servos-tlc5940-arduino/
http://www.adafruit.com/products/815
www.bajdi.com

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