Affordable Conductivity and Temperature Meter Housed in PVC #CitizenScience
Public Lab do great things to not only explain ‘citizen science’ initiatives and needs but to make them affordable too – this CT sensor housed in PVC by user bhickman is definitely one such project. Conductivity calibration and a further explaining of the build can be found here.
The goal of this project was to make a conductivity and temperature (CT) sensor that gives accurate and repeatable measurements while still being affordable. In the quest for that goal, a simple circuit board and probe were designed. The design applies an AC square wave across a voltage divider, where one of the resistors is a know value and the second is determined by the resistance of the solution being measured.
Make a robot friend with Adafruit’s CRICKIT – A Creative Robotics & Interactive Construction Kit. It’s an add-on to our popular Circuit Playground Express, FEATHER and other platforms to make and program robots with CircuitPython, MakeCode, and Arduino. Start controlling motors, servos, solenoids. You also get signal pins, capacitive touch sensors, a NeoPixel driver and amplified speaker output. It complements & extends your boards so you can still use all the goodies on the microcontroller, now you have a robotics playground as well.