Drill Motor Speed Controller Bracket

thingiverse

Harbor Freight drill motors are a popular choice for combat robot projects due to their affordable price tag, with a motor and 18V Ni-Cd battery combo costing only $20. The challenge lies in finding a suitable motor controller that won't break the bank, as most options exceed $100 per motor. After scouring online marketplaces, I managed to assemble a 30A setup for around $15 per motor, along with an Arduino board that can support up to four motors for an additional $10. The motor controller features a 0-5V analog input, which is then connected to a dual relay board to control the direction of the motor's rotation. A wiring diagram and links to the boards used are provided below. Demo video: https://youtu.be/5luJtLUHcbo Cordless drill - http://tinyurl.com/hc5fwsq This cordless drill is identical to the one sold by Harbor Freight for $20. Motor Controller - http://tinyurl.com/MotorController40 Note that this controller lacks master and slave mode, so the potentiometer will need to be removed and the yellow wire connected directly to the Arduino. Dual Relay Board - http://tinyurl.com/5vRelayBoard These boards can be found on eBay for around $4 each. Although the setup consists of a 30A motor controller and a 40A controller, short test runs have not generated excessive heat; further testing will be conducted to confirm this. As for code, I don't currently have any available, but a helpful "how-to" post can be found at http://rcarduino.blogspot.com/2012/04/how-to-read-multiple-rc-channels-draft.html. Print Settings: Printer Brand: Wanhao Printer: Wanhao Duplicator i3 V2 Rafts: No Supports: Yes Resolution: 0.2 Infill: 25%