HiLetgo 5pcs A4988 Stepstick Stepper Motor Driver Module + Heat Sink for 3d Printer Reprap

Just what it says it is, but be careful putting the heatsinks on as they are close to shorting out other components; (but I think that is normal with these things).

3 of the boards I tested overheated, even after testing it with a multimeter and was only pulling 0.4 (should be 0.8-1.05 without overheating). And yes I did put the heatsinks on but they got so hot it would burn to the touch when normally you should be able to hold your finger on it and be fine.But for the price you pay they do the job if you need something. I went from having prints like the picture bellow to something that I can actually use.

These seem to work ok so far. Haven't pushed a lot of current through them yet, but will likely do so over the next few weeks.If they blow up or fail in some way, I'll update this with that info. :)

Used with a MKS Gen L board, well priced and they just work. Can't fault them.

4 out of the 5 did hold voltage when tested with multi meter. Seemed loose in the socket, may be a contributing factor. Purchased from alternative supplier which worked fine.

great quality product