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.
Adafruit publishes a wide range of writing and video content, including interviews and reporting on the maker market and the wider technology world. Our standards page is intended as a guide to best practices that Adafruit uses, as well as an outline of the ethical standards Adafruit aspires to. While Adafruit is not an independent journalistic institution, Adafruit strives to be a fair, informative, and positive voice within the community – check it out here: adafruit.com/editorialstandards
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.