Pololu High-power Motor Driver 24v20 set-up on the avr 1.5?

Greetings,
I've just received a pair of Pololu High-power Motor Driver 24v20. Has anyone hooked up one of these to the avr 1.5?
jsmith2307

Look up Tronic on this forum, I think he did something like that a while ago.

Its easy to connect it to AMC. You will need three cables.

1. Connect the Grounds together (GND)
2. Connect the PWM signal from AMC to the pololu PWM input. (PWM)
3. Connect one of the two* direction outputs of the AMC to the DIR input on pololu board. (DIR)

*Each PWM channel on AMC has two direction outputs associated with it to be able to say to the motor drive which direction to turn the motor and of course the PWM signal sets the speed!

Done.

You can connect the second pololu board as instructed above for the second PWM channel on AMC.

Thanos

Thanks tronic, by chance for the less intelligent ones (me), can you do a sketch of the hook up please.

Greetings,

Thanks tronic, by chance for the less intelligent ones (me), can you do a sketch of the hook up please.

ROGER THAT!! I'm a complete idiot when it comes down to stuff like this, the more simple you make it,...you get my drift. Anyway think the red on the left is where you are talking about. Would you delinate where the battery and where the motor hooks up, please.

Ok,

Here is some kindergarten drawing... :lol:




Thanos

Greetings,
Thank You! One more question, where do you hook-up #2 :clap:
jsmith2307

I'm busy now coding to be able draw you another one...

Its simple to connect the second one, think of it... :5+5:


Use again the GND and connect the PWM2 and P2D1 from the AMC to the second pololu PWM and DIR inputs...
:Einstein:

Greetings, :yippiee:
Like I stated before...I am complete idiot...however, the drawing you Illustrated
will work fine! :clap:
jsmith2307

I actually repeated kindergarten, but thanks for the photos. I'd better start building one then!

Greetings, :yippiee:
I've had a small amount success,....after hooking up, MOVEMENT!! :clap:
jsmith2307

Of course you would get motion... It simply works!

Don't forget to add some cooler on the little mosfets. I used some tiny coolers from computer memory modules...

Greetings,

As I said before...I Am A COMPLETE IDIOT... pictures of the mosfets & coolers, please! :brows:
jsmith2307

Here it is. Note that I added some clear tape on the sides of them just in case to isolate them from the connectors and the SMT capacitors that are very close to the mosfets.












 

Greetings,
Thanks for the info and pictures greatly informative. Question: can I use Heat Sink Compound Type Z9 between the mosfets and heat sinks (coolers)? :brows:
jsmith2307

I guess you can, but then you have to find a way to hold the heat-sinks in place (tie them with rope?)

The heat-sinks I used had adhesive layer to stay in place.

Greetings,

A point well taken.....I guess supper glue would/should be used.
jsmith2307

Greetings,
I attached my heat sinks with VERSATHERM MEGA COPPER high temp silicone gasket maker, then attached whole thing with #2 nuts and bolts. :thbup:
jsmith2307