Tuesday, 05 April 2022
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I recently bought one of these: https://www.keymouse.com/keymouse-components/keymouse-mouse-sensor-module-3-0t with the hopes of interfacing it with a pro micro 5v.

I have it hooked up (5v to raw, all other pins matching on both devices), but whenever I power it on, the vcc rail gets pulled down to 0.7v, and the regulator on the pro micro gets hot. I am fairly certain that I've hooked this up correctly. I have tried this with 2 pro micros from different vendors now, with the same results, but without the sensor connected it works fine.

Do I need something else in between these? Is this board compatible with these type boards? https://www.tindie.com/products/jkicklighter/pmw3360-motion-sensor/ I kind of assumed that since both are spi, it would work. Plus yours is silkscreened with 5vdc, so I assumed it is doing the level shifting for the 3v3 pmw3360.
5 months ago
We have responded via email.

For those curious, the issue was that the pin labeling on the Mouse Sensor Module 3.0T was flipped and incorrect pins were connected. The labeling should be fixed in the next revision of the board.
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