I was wondering if you could mix standard analog servos with digital servos. Can one use 5645s, 442s, and a few 5995s? Each draw power differently, but the weaker standard servos cannot handle higher voltages.
Yes, you can mix and match, with the SSC-32.
I’m doing it right now with a Mega Servo as a waist rotate.
You’re right, though, that you’d need to supply those servos seperately.
However, I don’t think that would be a big issue.
You can tap into your 7.4V pack and hook a third wire lead up to it so that that small circuit only draws from 5 of the cells, effectively recieving 6V.
Then you stick the 6V directly into the servo connector and jumper the SSC-32’s pulse pin into the servo.
Does that sound like it’d work?
This doesn’t sound like a good idea because when you charge the pack the bottom 5 cells will need more energy then the top cells, but there is no way to bypass the top cells so they are going to get heavily abused from overcharging.
A better idea, use the voltage regulator module that Lynxmotion sells to supply the VS voltage for the servo banks running the lower voltage servos?
That sounds like a better idea. Thanks Eddie.
You probably drop the voltage supplied to the servos by using one or two large diodes in series with the servo motors.
Doh…
So the overall distribution would get pretty yucky pretty quickly.
Lopsided battery packs are not fun to charge.
:X
That HD regulator is a good idea, if a bit expensive.
If you can find cheap diodes that can handle the current needs, then zoom’s idea sounds even better.
Methinks I’ll take a leaf out of that book very soon…
Several years back Radio Shack had 1 amp and 3 amp rectfier diodes at 2 for 1$. They appear to have a 1.1v and 1.2v drop across them.