User Manual

TMCM-1210 Hardware Manual (V0.91 / 2017-SEP-04) 6

4 Mechanical and Electrical Interfacing

4.1 Dimensions and Mounting Holes

The dimensions of the board are approx. 20mm x 20mm x 9 mm in order to fit on the back side of a 20mm

(NEMA8) stepper motor. Maximum component height (height above PCB level) without mating connectors is

around 6mm above PCB level and 2 mm below PCB level. There are two mounting holes for M2 screws for

mounting to a NEMA8 stepper motor.

20mm

18mm

2mm

PCB

20mm

2mm

18mm

2.1mm

Figure 4.1 Dimensions of TMCM-1210 and position of mounting holes (with comparison of size)

4.2 Board mounting considerations

The TMCM-1210 offers two metal plated mounting holes. Both mounting holes are connected to power supply

ground. Please keep this in mind when mounting the board to the rear side of a motor.

Figure 4.2: Example of TMCM-1210 mounted to NEMA 8 stepper motor