Technical Question on Servo's

[PaulP]

I have one of the HV robots, 10.8V...

If I wanted to run another make of servo alongside these, for example a micro servo in a DOF that didnt need the high torque, would it work if I rerouted the Supply(Red) from a 5V regulated supply instead but still pick up the PWM and Ground from the original place???

[gdubb2]

Hi Paul,

I'm certainly no expert on servos, but I have connected them as the diagram shows. I was running the servo at 9Vdc instead of the 4.8 from the receiver. This was in a small robot with the servos modified for continuous rotation.



I see no reason it wouldn't work going the other direction with the voltage.
Gary

[PaulP]

Thats more or less what I want to achieve, I've seen some Hitec HS55's going cheap and they are the ideal size for what I want to do.

Thanx for that...

[JonHylands]

PaulP,

The only critical thing that you need to ensure is that the two power sources (logic supplying the signal, and power for the servo) have a common ground.

- Jon

[PaulP]

Thanx Jon

Again, thats what I'd been thinking but good to have someone confirm it.

I was fairly certain that the 5.0V is used to supply the circuitry while the signal is just interpreted for the movement required etc.... From my observations with a scope, the PWM seemed to be around the 5V level even though the voltage was up at 10.8

Hopefully what I want to achieve should be do-able. I'll order the servo's and start chopping early in the week.