HiLetgo Controller Stepper H Bridge Mega2560 Review

All the devices on this board appeared to be placed and soldered in an automated process, so they're pretty solid. On the other hand, the motor driver and heatsink combo is what I expected from this price point: terrible. On 3/4 of these boards I could put the panda between the motor driver and its heatsink, which of course means it does next to nothing. On the 4th the driver leaned until it touched the edge of the heatsink but still not perfect. If you run *every* board I received at full…

These are excellent small modules for the price. Easily control the speed and direction of two DC motors or parallel outputs for more power. The only issue I had was the poor quality control of the heatsink attachment. There was a significant gap between the heatsink and the thermal insert. There's also no thermal paste or thermal pad between the heatsink and the tongue. This caused the part to overheat at only 30% of the rated load. Luckily, the solution was to simply tighten the screw until…