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Forum Index : Microcontroller and PC projects : High power PWM motor controller...
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Grogster Admin Group  Joined: 31/12/2012 Location: New ZealandPosts: 9078 |
Hi folks. Thought I would share this link: 43A PWM H-bridge motor controller for $10 Designed for Arduino, but also ideal for any other MCU with PWM outputs, such as the Micromite. I have ordered three of them. I went looking for some PWM H-bridge motor controller chips for a project that requires up to about 5A of current to drive the motor, so these should be perfect. The motor is a 14v4 motor and planatary-gear set + chuck from an old battery drill. Free-running, these motor-gearbox-chuck arrangements usually suck about 2 to 3 amps no-load, and this can zap up towards 10 amps or so under load. I expect my load to be very light - it is just a nice way to recycle an old dead battery drill, but my stock of SOIC 1-amp H-bridge drivers are just not juicy enough to drive a bigger motor. When you can buy a complete module like this, ready to plop in for $10 or so, why bother to look for discrete IC's to design in.....  Smoke makes things work. When the smoke gets out, it stops! |
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centrex Guru  Joined: 13/11/2011 Location: AustraliaPosts: 320 |
Hi Grogster They are very good controllers much favoured by the builders of Segway clones. In fact their is a whole website devoted to the Segway clones with a lot of info on those controllers, I will see if I can find it and post it for you. Have fun Cliff Cliff |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9078 |
That would be much appreciated. I have found a manual, but it is all Chineese, and I am afraid that German is the language I am in the process of learning, so Chineese is total gobble-de-gook to me!
I can't get over the price of some of this stuff. These modules specifically - US$10 each for up to 43-amps of motor control - wow. Not that I am likely to need more then about 5-amps, but still...... Smoke makes things work. When the smoke gets out, it stops! |
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| centrex Guru Joined: 13/11/2011 Location: AustraliaPosts: 320 |
Here it is, over a 100 pages http://www.diyelectriccar.com/forums/showthread.php/ovaltine s-segway-clone-89471.html delete the space between ovaltine s-segway it should read ovaltines-segway Cliff That doesnt seem to work I will try again. http://www.diyelectriccar.com/forums/forumdisplay.php/non-ro ad-going-vehicles-41.html Then click on the first item Ovaltinos segway clone. For some reason a space is being added in /non-road-going vehicles remove it and it works. Cliff |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9078 |
Found it - thanks. 
Here is a clickable link EDIT: Found circuit. 
Based on that, it looks pretty easy to drive. Full MCU buffering via the 244 chip, so should be quite hard to kill it or the MCU by accident. Pull both enables high, PWM into one input will make motor go one way, PWM into the other input will make it go the other way. Smoke makes things work. When the smoke gets out, it stops! |
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| plasma Guru Joined: 08/04/2012 Location: GermanyPosts: 437 |
@grogster if you need help with the german language come to germany :) or ask me ;) btw i think it has in reality not much moore as 15-20 A. |
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| Grogster Admin Group Joined: 31/12/2012 Location: New ZealandPosts: 9078 |
Danke. Yeah, not really worried about the 43-amp rating - so long as it can do 5-amps or so, I am happy. Smoke makes things work. When the smoke gets out, it stops! |
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