Coqui Conductivity Sensor
The Coqui is a circuit that allows you to 'hear' the readings from various sensors. With an assembled unit, you'll be able to 'hear' the conductivity of a liquid, the temperature of a room, or the amount of light, as a kind of hum or buzz.
For example, a Coqui can measure:
This version of the Coqui is made on a breadboard, and with just a few simple parts. This kit contains all the parts you need to get started, and learn how to build your own with this page on the Public Lab site!
Note: some images (those with a box) show the "Mega-Coqui" version with an audio out plug for attaching to a speaker, which we sell as a kit and assembled. Learn how to build the Mega Coqui here.
For an overview and more activities and upgrades: click here