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Dimensions and CAD

The board is 39 × 39 mm with four mounting holes on the NEMA 17 pattern (31 mm apart). The encoder chip is exactly in the middle of the board, so a bracket that centres the board on the motor shaft puts the chip on the shaft's axis.

Drag to turn the board, scroll to zoom. The model is the board's STEP file from the repository, the PCB and everything mounted on it.

Board dimensions and hole pattern. Board dimensions and hole pattern.
Figure 3.3: Board dimensions and hole pattern.
The STEP model.
Figure 3.4: The STEP model.

The STEP files of the board and of an example mounting bracket are in the firmware repository, in STEP files: Spectral_micro_STEP.STEP is the board, Spectral_micro_bracket.STEP the bracket to adapt to your motor (Mounting on the motor).

Downloads and files lists everything that can be downloaded.

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