Mel, I am not dissing you at all... Tying to save you frustration, time and money.... Listen, you do not need the 2x60 controller.... Whoever told you that is plain wrong. I am willing to bet even the 2 x12 would work just fine as well.... Go to dimension engineering's web site and see for yourself... the 2x25 can handle robots of up to 300lbs...and peak amps greater than 50... Also, those motors will be lucky if the draw 5amps (locked) each... that still gives you 20amps per channel breathing room... By the way, if are still worried about it just put a 20 or 30amp fuse on the positive side of the battery... if the chair pulls too many amps (which guaranteed won't happen) it will just blow the fuse protecting everything else...

I sort of agree with Richard, in the fact that you shouldn't go cheap.

Personal experience over the past 2 years has shown me that buying cheap, buying chinese replicas, etc. has cost me more in the long run than if I had gone and got the right thing for the job with the correct, clear instructions.

The H-Bridge you have got here is a "Dual BTS7970" based H-Bridge however it will only control a single motor. The dual BTS7970 doesn't mean it is two channel. The tell tale sign it's for a single motor is that it only has one motor output on it.

So with that in mind, you spent $40 for 1 motor when you need to control 2 motors. Total would be $80. A better, well documented motor driver is available for just a little more.

Sure, we managed to figure out how to wire it this time but that's not always the case. This one was one of the more difficult to find information on since everything was in Chinese and was image based rather than text based which meant it couldn't even be run through google translate.

The datasheet on the BTS7970 chip is here if you need it or for anyone interested in it.

Do your research, ask on here for advice and opinions for things you are not 100% sure on before laying out any money, you'll find you get a lot less problems

With regards to the current the motors will pull, have you measured this? A multimeter is your best friend and for a few bucks you can pick one up. Measure the current draw from the motors and use actual readings along with datasheets to help you decide on controllers and drivers.

Thanks Dual Rich Bridge. I will have to do this over since it is only one motor. Blah!

ok, I'm over it.

Thanks,

Mel

@richard r,

Where is the link for $124? on the 2X25?

I show it at @280 plus SHH

2X25

The shipping alone is $117!

where is it for $124?

Sabertooth 2x25

Why buy a possible counterfeit board from a seller in hong kong through ebay? Ebay is one of the worst places to buy from at times, this seems to be one of those times.

Agreed... I would stay off of eBay and don't cheap out Mel, buy the best... They are in stock at Robotshop.com... I buy from them all the time... Sabertooth 2x25

@Richard R,

I am on a tight budget. I live on SSI at $721 per month. I used to make good money, but not now.

I have in fact ordered the one you suggested. Lucky for me, I have a birthday in June. I was going to get the Simplify3D software, but I guess I need this more.

Now, I could use help, I would like to know how to set the switches. I want to run it on 12v instead of 24 so it won't go so fast. I have two batteries so hooking them in PAR should get a lot of time. I would like to be able to control with the little windows on the screen that lets me go in any direction plus have a power control on it. Also, I would like to give it commands from the command script console and run things like navigation.

I plan to have two EZB3s and one EZB4.

It will look like Lexi but in a spastic sort of way. I will have much weaker arms.

Thanks to both of you for the help.