How piezoelectric sensors work and how to use them #Sensors #Wearables @kobakant
The How to Get What You Want site presents another interesting tutorial on piezoresistive sensors, various techniques to lay them out, and how to interface them to microcontrollers.
In this post I want to try and explain how a pressure matrix built from conductive rows and columns with a piezoresistive material (Eeonyx, velostat) in between works, how to wire it up to a microcontroller and write the Arduino code that will parse through the rows and columns to read the individual pressure points at each row/column intersection.
1) how a piezoresistive pressure sensor works
2) wiring matrix to arduino
3) the matrix code
The article uses some excellent Flickr drawings to illustrate piezoelectric properties.
8-6-2021 (August 6, 2021) is the Snakiest day of the year and it’s also this year’s CircuitPython Day! The day highlights all things CircuitPython and Python on Hardware. See you there!
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.