This is the chain and sprocket kit for the IG42-DB4 robot platform. It includes 10 tooth and 15 tooth sprockets, 6 feet of chain, and 4 connecting links.
This is our affordable PWM motor controller. It has three inputs: INA, INB, and PWM. It uses the VNH3SP30 driver. And it have a 5V 1A Output voltage regulator.