Components I have:
- Relay (rated at 12 V, 70 A, can't find how much current is needed to saturate its coils). Schematic here
- Arduino Mega and Nano
- 12 V Powerwheels battery + AA battery packs
- Motor: 00968-9015
- Transistor: PN2222
- Diode: 1N4007
- Appropriate wire, terminals, crimper, etc.
I need help wiring the setup in the title. I am trying to control a DC motor taken from a Powerwheels Jeep Wrangler through the pins of an Arduino.
The motor draws 70 A under normal load, and is brushed. I've been doing a lot of research online trying to understand how this would work, but I haven't found anything exactly like mine and do not quite understand how it should work. Namely, how do I connect the Arduino, transistor, diode, and battery to the relay that I have?
I should be fine with the code, like setting the pins to HIGH, it's just the wiring that is troubling me. I also am not sure if I will be able to reverse the motors' rotation with this (without an H-bridge or an expensive motor controller). Any help would be much appreciated.
Here are some resources I have been looking at:
Here is where I got the figure for the motor's current draw.
Here is the Jeep Wrangler toy.