Thanks to OSH for park support !!!
PCB stepper motor is designed for direct drive wheel for swarm robots
I am inspired with great project https://hackaday.io/project/39494-pcb-motor
Instead of printed rotor I am using PCB rotor (3 layers of 1mm PCB and 5x3mm magnets)
middle layer rotor PCB have 1mm smaller diameter and making rim for simple rubber
Board can be easy configured to unipolar or bipolar mode
- 4 layer 40 turns per coil !!!