This project is slowly starting to come together, as I’ve now acquired the necessary electronics and done some basic code. Below are some images of the final mount design, mounted onto a marimba mallet. You’ll notice that the captive nut slot has been implemented and there is a battery and a Seeed Studio NRF52840 attached.

Next, I need to strip off the JST battery header and solder the battery directly to the board.

I’ve also wrote code and tested the NRF52840, and I’ve been able to get raw accelerometer and gyroscope data. Now, I need to write more code to detect when gyro/accel data goes over a threshold, indicating a “stroke,” or hit, of the mallet.

Stay tuned!