I recently built a project using a stepper and the Pololu High Power Stepper Motor Driver 36v4. I found that the stepper ran too hot after about 20 minutes of operation and had insufficient power for the application.
After referring to the specifications for the gearmotors, I determined that the 25D 20.4:1 HP 12 volt metal gearmotor had the best balance of speed and power to drive the load.
Pololu suggests the VNH5019 for this motor but I also note that the driver 36v4 that I used for the stepper is able to drive dc motors as well. Since this driver is already integrated into the project, I would like to explore using it instead. The 36v4 has torque control and stall detection built in, which I used with the stepper. Would this be a workable choice with the dc motor?