Being a bit of a newbie at all of this, I’m seeking some advice. I’ve done enough research to know what motors I’m using, have programmed all of the I/O and display for my project, but am now trying to figure out the best path to take for motor control.
Essentially, my project is this:
A truck/pan/tilt bot for time-lapse photography, meaning it’s going to be running very slow for a very long time (I’ve got all the gearing, design, etc. laid out for the motors). Three motors initially, and after that works a 4th (a second pan motor for the truck mechanism, giving the following movements: pan, tilt, truck X, pan/truck Y). The motors I’m working with are the:
Hitec HS-645MG (6V @ 450mA - I’m highly doubting this amp load, but all I can find is amp rating @ no load)
Hitec HS-5955TG (6V @ 4.2A)
DC Geared Motor: (truck motion)
14 RPM @ 12V/45mA (again the mA is @ no load, I expect this to be much higher pushing a load of around 10Lbs)
I was originally considering using the L298 motor driver from solarbotics (http://www.solarbotics.com/assets/documentation/kcmd-l298_compact_motor_driver.pdf) as it controls two motors for < $20 and gives me a regulated 5V for the arduino, but it lists a maximum peak amperage of 3.0A, so the second servo pretty much puts this driver out of the equation.
Does anyone have any recommendations for a motor driver that can handle the 4.2A load?
Thanks in advance!