Nema17 stepper housing with power connector and hall ref point.

This nema17 stepper motor housing is designed for Fischertechnik blocks. It also includes connectors for the motor wires and an additional 3pin connector for a hall reference point detection. This makes the connection of this Nema17 motor easier. The extra hall detector can be used to set a zero point of the motor. This can be very useful after a powerup. The hall detector is built into the housing and the necessary signal is given by a Neodymagnet D2x3mm which is located in the shaft adaptor. The adaptor also has an output to the standard 4mm Fischertechnik shaft. The Nema17 Motor has a shaft of 5mm. After 3D printing, this 5mm bore still needs to be finished with a drill, 18mm deep. Then it goes smoothly on the motor shaft.
The adaptor is also used to mount FT gears. Either you choose the 3 holes of 4mm or the 3xM4 tapped holes for the mounting. The 3 holes tapped with M4 I do it with a small electric hand drill machine at low speed. That goes very smoothly with a nice pure M4 tappe