So I'm trying to control a stepper motor (or maybe more) using input from a keypad shield w/ LCD screens.
Stepper motor (3v,6A) http://flashcutcnc.com/pdf/MP-2303%20Land.pdf
Arduino UNO R3
Keypad 4x4 input : http://iteadstudio.com/store/index.php?main_page=product_info&products_id=308
The problem I'm running into is the stepper motor only uses 3V and requires about 6A and I could not find a motor shield that can output 4-6A and 3V.
I'm thinking of buying this shield
Megamoto Shield: http://www.robotpower.com/products/MegaMotoPlus_info.html
and use PWM to control the voltage. I've never done this before so I'm not sure how this will work out. Any thoughts?
Another problem is that I cannot use these shields together since there are pins conflicts. I'm planning to connect two arduinos using i2c but it interferes with the keypad pin A4-5. How do I make this work?
Any help will be much appreciated!