I'm using the Pololu DRV8825 Stepper Motor Driver to control a NEMA 17 Steppermotor with an Arduino. The stepper motor requires 1.7A current. According to the driver specs on the Pololu website, if the current draw is higher than 1.5A per coil, I will need a heat sink.
The problem is that I'm not sure exactly where the heatsink should be mounted, or how to mount it. Furthermore, the driver is very small and most heatsinks i've seen are larger than it. Is there a specific type of heat sink that I should use for this device? Where should it be mounted? How should I mount it?