Small embedded systems are all about compromises between performance, code size, SRAM usage, etc., and both the fun and the headache is finding the right tradeoffs and creative solutions for your problems. While code optimization should always be the last thing you do — my mantra is working/clean/small/fast in that order — when you do need to do some bit magic (and most of the magic in embedded in indeed twiddling bits), you might find ‘Bit Twiddling Hacks‘ a good read to pick up some tips and tricks!
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.
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