SenSit
Jose Lemus
Abstract
The SenSit is a device that helps you monitor how much time you spend sitting, and alerts you
when it detects that your posture has deteriorated. The device uses an ESP32, and force-sensitive
resistors. It connects to the internet through WiFi and uploads to a database. Recorded data
can be viewed in a graph through a companion website.
Summary
The SenSit started out as a Hackathon project in an intro to biomedical engineering course.
At the time, I was the only one in the group who had any experience with programming or using
simple electronic components, so the development fell on me. Despite this, we pushed through
and managed to win second place.
The following year I decided to recreate the device on my own, in a much less restrictive setting.
By switching to the ESP32 I was able to shrink down the device tremendously from the original, which
used an Arduino and Raspberry Pi. I was able to add additional features, including an onboard buzzer
that serves as an alarm. I was also able to improve the companion website for the device.
Version 2 came out to be much smaller, more robust, and energy efficient.
