Welcome to EZ-B forum please take a look at https://synthiam.com/Community/Questions/2907

Personally I use a similiar power source,but I use re chargeable batteries in the holder supplied with kit to power up ez-b ,I prefer to do that and use a seperate source from 12 volt battery for servos, using this regulator

Thank you glad to be here. Thank you for that I think it may be the kind if thing I'm after. I'm primarily going to be using motors as I don't think servos can handle the amount of weight required by each. I need them to be able to hold about 5 kg

Jchadw, Welcome.

The EZ-B can only handle up to 9 volts. You can use something like this to power the board if you want to run it off of a car battery. As far as the motors go, you can use any size motor that you want, but you cannot power them directly off of the EZ-B. You need to buy motor controllers that can handle the voltage and amperage of the motors that you choose. The controllers take power directly from the battery, and supply it to the motors, but a low current signal from the EZ-B controls them (hence the name).

DJ sells 2.5 amp controllers in the store here. If you need bigger, you will have to shop elsewhere. The EZ-B software works well with Sabertooth controllers.

My robot uses car batteries. This is the route I have taken.

You will find a lot of answers in the forum, but the first thing you need to do is click on the link "Tutorials" and read them, and watch the videos, start to finish. Good luck with your project!

@Bravia Is that a 12v to 5v reducer? The EZB really should have 6V minimum.

@Danger! The EZB can handle up to 17v not 9V.

@Jaychadw you could feed it direct from the battery however car batteries have a tendency to vary from around 10v to as much as 15v so I personally would add something in between to regulate the voltage and give a nice steady voltage. Something like this would do it, give a nice constant 9v.

I stand corrected. I don't know where I got 9 volts in my head. I used a 6 volt step down converter myself, and it worked fine.

Rich I only use the regulated 5v supply for the Servos The ez-b has its own supply from 4x 1.5volt batteries, I prefer to have a seperate supply for ez-b then one cannot hit it with too high a voltage or current. Lets say that has it own in built limits.This card is too valuable to me. Can't imagine living without one now Pat

Hi. Thank you everybody for all the assistance and I apologise for only just now getting back on. All your help is sound and u agree with Bravia and the card is too valuable for me to risk a mistake although I cannot get around my need for strength. I think the plan is going to be to power my motors completely separately from the card itself. That being said, I do feel drawn to the idea given by rich. Has anyone had any issues with this kind of setup?

@ Rich I run EZb on the fish tank at 5 volts regulated , works awesome.

It is coming from a PC power supply that insures that there is practically zero chance of brown out ( too little current and Bluetooth disconnects)

If you use it in a car I recommend using a DC to DC converter to give your ezb a regulated source.