10.07.2015 - Dedicated proximity sensor - A failure!

A project log for Sit.Up

Sitting for long periods has become more common in today’s life causing serious health issues. Sit.Up!

electrobobelectrobob 08/11/2015 at 21:290 Comments

I have done some brief experimenting with dedicated proximity sensors, specially the MTCH101: better sensitivity, but comes with 2 nice “features”. First, it is designed for momentarily proximity, so after a while it will compensate the person and think there is actually nothing there. Second, it seems to get stuck in “detected” mode quite often, even the datasheet mentions a “Stuck Release Mechanism” as a feature! So, no good.