@Dave The 6v regulator is a dc/dc converter. it takes 12-24v in and outputs 6v. the 12v is a Dell Server Power supply. I have tied all the 12v leads together and all the grounds together. The 12v goes to 2 - 12vin-6vout 25A DC/DC converters. The 6v then goes to the 6v buss and the 12v also power the EZB. Because of when testing I cooked one 805bb by plugging it directly into the EZB (giving the servo 12v), I am now planning to also power the EZB with 6v and turn off the low battery warning.

Ahh, OK then. That makes sense. It sounds like you have a very solid and well thought out power circuit. Nicely done. Some people struggle with power circuits.

Just a thought here but could something have burnt out in the EZB ports when you burnt out the Hitec 805bb? You wouldn't think so but ya never know with electronics. Perhaps it's time for a new EZB.

This is a little off your OP but your mention of using a Hitec 805bb and powering it through the EZB struck me. The Hitec 805bb is a nice servo but it's considered a heavy duty servo. Be careful about powering servos through the EZB. If your have a lot of load being channeled through it and feeding power hungry motors you can easily brown out the EZB and cause a reboot. The 805bb only pulls 830mA but that's at idle. When it starts up the amp draw will spike and then smooth out but will pull many amps when lifting a load. Then add a few more big servos to the EZB and you're really asking a lot of the well built components inside of the EZB trying to keep a smooth power supply it it's own circuitry. I always make it a practice to power motors and servos around the EZB unless they are small and doing light duty. Another advantage of powering servos and motors around the EZB is that if something happens to the motor you won't send a voltage surge back through the EZB. Fuses in the right places are your friends.

The 12+ and 6+ are connected together in the diagram - sure you're not feeding +18 into the servos? The 6v battery seems to have 3 connections in the diagram.

@DJ I do not use any batteries. All power supply. Guaranteed only 6v (I have tested it). I do have a 8000MAH 7.2v LIPO I could use to power the EZB. Do you think that is a better solution?

@Dave I have molded a plug using hot glue that all the servo power wires are in, so all of InMoov's servos are powered from the 6v buss not the EZB. How I did that was: Removed all power wires from my 6" servo extension cables. plugged them into the 6v buss. Took a few pieces of scrap 3d printed plastic and wrapped the around it. Then sprayed it with PAM cooking spray (so it does not stick to the buss) and pumped it full of high temp hot glue. Now I have a plug and nothing will short on the otherwise bear pins. Dave, I also think that is the only explanation of what happened. The servo when powered by 12v shorted in some way and possibly (just guessing) applied 12 to the signal pin.

Hi DJ, According to rz90208 the 6volt power source in his diagram is a 12v to 6v dc-dc buck power converter not a battery. It would have + and - power in, then same wiring out (sorry, of course you know that. LOL). According to the drawing it looks like he's running his neutral for the servo through the EZB.

rz90208, Pam for non stick glueing. Never heard that one. Nice tip, thanks! Do you need to wash the Pam off so it does not rot and smell? Hot glue makes for a good stress relief between the solder pads and wire also.

Adding another power source won't hurt but won't correct anything you have going here. It will add a dedicated power source to the EZB and anything powered through it and remove load from the other power sources. However if your adding a battery to a non battery robot it will be a battery to keep track of and powered up.

@Dave, After the glue sets, I trim off the excess glue and using a toothbrush and a spray bottle of alcohol I clean up everything. And you are correct, the servo neutral does go to the EZB. Do you see a problem with that?

I added an edit to my last post about adding a battery to a non battery robot. In short I think you'd just be adding a complication and maintenance issue. Just stick with power converters. Just make sure your existing power supplies are wired correctly and can deliver the amps needed.

As far as running the neutral through the EZB; that should work OK but I'd add a dedicated neutral wire along with the power wire to the servo. Best practice. Keeps your power delivery system in line along with a common neutral to the EZB. That way you'll have all the needed connections and also have multiple paths for the unbalanced load incase you loose a connection or break a wire.

Ok Dave now you got me thinking. I am going to make another buss for the return (ground) just like the 6v buss and remove the servo return from the EZB.InMoovWiring2.pdf