Digital Scale Strain Gauge Weight Sensor

We took a $20 digital scale from Target and hooked it up to an amplifier and a microcontroller. This video outlines taking apart the scale, wiring it to the amplifier, and the code, as well as an overview of the concepts behind strain gauges and Wheatstone bridges. There’s a demo of two live scale apps written in Python near the end of the video.

For the source code or more information about our microcontroller kits, go to


jeweleryDigital Scale Strain Gauge Weight Sensor