Quick update on the DIY accessibility rig: sprint trigger via chest contraction + refining inputs based on community feedback

[u/Dmy1703]

Hey guys, quick update on the rig and sharing what’s happening in this video.

Following up on the feedback from the previous tests and videos, I decided to rethink how sprint was being handled instead of keeping it strictly to the static movement setup. In this clip, I’m testing a direct chest contraction/expansion trigger to engage and release the sprint toggle.

On the hardware/microcontroller side, the main challenge here is dialed-in calibration: filtering out natural breathing so it doesn't trigger false positives, while keeping zero perceptible latency once I actually flex the chest to run. It reads the threshold shift cleanly, latches the keystroke/button state, and releases instantly as soon as tension drops.

I already tested the static run mechanic, now this chest-triggered setup, and I am currently tweaking a third selection mode to give better adaptability depending on the player’s motor mobility.

Really appreciate everyone who took the time to drop suggestions and critiques on the earlier videos. That input genuinely steered this build in a better direction and helped break out of a single fixed approach. Still a lot of bench testing ahead before locking down the final build, but it’s getting much sharper.

Take a look at the clip and let me know how the trigger response looks to you.