“Excellent motor which fits perfectly with Lego. This is what I've been looking for, for years; in the past I've had to modify motors to attach to Lego. Motor works really well with Raspberry Pi, so no problems at all. Seems to be powerful enough for my needs.”
“Great way to integrate raspberry pi / arduino / micro:bit with lego technic systems. Only minor issue is related to a small mis-alignment on Z axis which, if needed, requires a custom 1/4 height spacer as discussed here: https://www.eurobricks.com/forum/index.php?/forums/topic/168069-using-rc-servo-in-lego-environment/&do=findComment&comment=3084436”