Interfacing 3.3V Arduino Pro with Servos?

Forum 2005-2010 (read only) Hardware Interfacing
1

Hi.

I have a Arduino Pro 3.3V version. I was wondering how I would be able to interface this with standard 5V servos? Can this be done?

Cheers
Mitch

2

You will have to supply +5vdc from a different supply source to the servo's power lead and make sure to connect the ground of the external supply to the boards ground pin.

Lefty

3

Power wasn't a huge issue I suppose, but can I use a 3.3V Arduino to actually communicate with the servo or do I need some kind of logic converter?

4

The 3.3 volt logic high should work OK for the servo's input control signal. Breadboard it first to determine for sure as there may be a pick servo or two out there.

Lefty