Nema17 peristaltic pump

This is a peristaltic pump doser using nema17 motors.

Two versions included ,one using plastic rollers and 3ID x 8OD x 4W bearings(693zz - 12 bearings per pump), other one using MR105ZZ bearings (18 per pump )

Each pump needs, depending on the version, the following:
* 6 x M3 20mm with M3 hex nuts for the pulley.
* 4 x M3 10mm to secure the motor to the motor plate
* 2 x M3 10mm screws and 2 M3 brass inserts to secure the motor plate to the case
* 1 x M3 5mm grub with one M3 square nut to secure the pulley to the motor shaft.
* 1 x M3 25mm screw and nut to secure the Tube cylinder to the motor plate
* 2 x M3 25mm screws and nuts to secure the tube holder to the motor plate
* 1 x M3 30mm screw and nyloc nut to secure the tube cylinder to tube holder.
* 1 x spring and 2 shims (optional)
* 3 x 5mm tube.


To run the pump I personally use an old 3d printer board and a raspberry pi to schedule them.

The version tested and confirmed working is the plastic rollers