Hello, I have been scouring the internet for some basic information about motor drivers. I'm in a bit of a mess and I'm in need of a 'motor driver adviser'. Someone who can point me to the parts I need. :)
My project is to build a rig that propels a flatbed scanner along two axis. It's intended use is to make reproduction of artworks. The scanner will be mounted on a linear actuator not dissimilar to a CNC router.
The motor will drive a timing belt. The motor I have bought is a NEMA 23. its 76mm long and has the following specs:
STEP ANGLE: 1.8 CURRENT: 2.8A PHASE RESISTANCE: 1.13? PHASE INDUCTANCE: 3.6mH
You can view the data sheet here: http://www.ebay.co.uk/itm/290593849218?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_4488wt_954
I will be using the Arduino BT as a controller. For simplicity sake, I decided on a plug-and-play approach. I bought the Arduino R3 Motor Shield whose specs are as follows:
Operating Voltage 5V to 12V Motor controller L298P, Drives 2 DC motors or 1 stepper motor Max current 2A per channel or 4A max (with external power supply) Current sensing 1.65V/A http://www.ebay.co.uk/itm/290593849218?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_4488wt_954
I have my doubts as to whether this can shield can handle my motor. My NEMA 23 has a rated current of 2.8A, the R3 Motor Shield supports up to 2A per channel or 4A max. I would appreciate it if someone could clarify whether or not this is a suitable driver and if so, how I would go about using it to provide its maximum current of 4A.
Failing this I shall have to look into using a motor driver with a separate power supply. I live in London so any UK suppliers would be appreciated. Can anyone recommend a suitable motor driver?
I look forward to hearing your thoughts and thankyou in advance for your time.