EE Bookshelf: Designing a Pedometer with a 3-Axis Digital Accelerometer
Interested in putting that accelerometer or 10DOF breakout to good use? Step detection is an interesting problem to solve in SW, and while there are dozens of algorithms out there, Analog Devices put out a good, reasonably easy to digest algorithm in their ‘Full-Featured Pedometer Design Realized with 3-Axis Digital Accelerometer‘ app note. It’s a good starting point if you’re trying to build a better fitbit yourself (though like any good algorithm, it’s all in the details and how you handle the edge cases!).
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, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, 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.