Can't mount the gear tooth sensors

[Tim Skloss]

Since the holes in the plastic plate didn't give the proper spacing, I decided to drill holes in the aluminum plate. Mounting to the Al plate removes the need for stand-offs and results in a more robust mounting.

The board will not fit as supplied. I trimmed the back corners off of the board so it would fit in the space in the corner of the gearbox.

Using a 1 mm thick piece of cardstock between the sensor and the gear, I marked the hole locations on the aluminum plate and then drilled holes for #8 screws.

Be sure you use PLASTIC washers under the board or you will get short circuits to the gearbox. Don't use metal washers as shown, I had to remove them later when I didn't have the camera.

When finished the sensor worked great. You MUST power it with both 5 and 12 VDC or it will not work. We chose to use a 4-conductor cable instead of the expensive PWM cables.