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Resolved Resolved by Rich!

Need Help On H-Bridge.

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Has anyone worked with the Soduino?

Specs 60A SX7970 Made by: www.sonxun.com.

as you can see in the picture, it has in1,in2,in3,in4, just like the other popular hbridges.

Now, i don't know what the en_L and the en_right is for (i will guess encoders which I won't have on my robot for now.

+5V and Ground are self explanatory.

The problem is when I get the unit in, it has all together different labels and instead of having one horizontal row of 8 pins, it has two rows of 4 pins.

The labels are as follows:

  1. R_PWR

  2. L_PWR

3 R_EN (assuming this is encoder but not sure.) 4. L_EN (Where should I hook it?, What pin does it line up with?) 5. R_IS (Have NO idea what this means or Where it should hook up.) 6. L_IS (Have NO idea what this means or Where it should hook up.) 7. VCC +5V 8. Ground

How do all of these pins line up with in1,in2,in3, in4 and EN_L EN_R.

Is seems that the other h-bridges that I used I only used 1234 and +5v and ground for the logic control.

It looks like it's time to ask an Engineer. I am in the dark. Please help me on this.

Thanks, Mel

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#17  

DJ has already done the work for you on the sabertooth.... Sabertooth setup

Being on a fixed income is exactly my point of why it is so important not to buy cheap... You don't have money to throw around, so make sure your purchases count... buying cheap usually means buying twice... costing more in the long run... LEDs or toggle switches, etc... little things like that, then eBay is your friend for sure....

#18  

OK, then, I am all set. Just waiting for the sabertooth to come in. I forgot about Roboshop which I have purchased from many times. I bought from the factory.

Thanks again for all of the help!

#19  

One more caveat... make sure you wire the battery correctly ...with all it's virtues the sabertooth (2x5 anyway) does not have reverse polarity protection built in.... I have a charbroiled black coloured one in the corner to prove it.... Talk about a waste of money... I lost $69 in a few seconds on that brilliant move...:)

#20  

Mel,

I hope you didn't cancel your order based on my last post. I miss read thinking you were looking for a 12 amp ST. Please disregarded.

#21  

Hey Dave, did you also say you had a 2 x12 for sale as well? Not sure if this or the 2x12 that was what you offered Rich... anyway, I was going to buy myself another 2 x12, so if have one to sell, I am interested...

#22  

Thanks Richard, I hope I didn't cause Mel any trouble by offering him something that wouldn't work. I see now you guys were coaching him towards the 25 amp model ST. If he only needs the 12 amp model that is what I have and I'm still willing to sell him the one I have available. It's the only one I'm willing to let go at this time.

#23  

No worries Dave... He has wheel chair motors.... the 2x12 would probably still work if he takes it easy and the bot is light, but I would still recommend the 2x25 for those size motors... the 2 x 12 might get a little annoying by shutting down on him occasionally if too much current is asked of it...

#24  

Thanks, Dave. I have already ordered and have solved the problem. But, I did not even see your post. It must've not been on this thread.

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