Our first Trinket project to be posted! This simple beats-per-minute calculator demonstrates the sort of small, focused task for which the Adafruit Trinket is ideal. We also learn some of the unique challenges of this tiny processor.
BPM counters are used by DJs, musicians and dancers who want to measure tempo…but can also be used for estimating heart rate, RPM of mechanical devices and other cyclical phenomena.
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.