High speed, mixed signal and/or RF PCB layout are all challenging, but it’s harder than it should be to find good information on board layout. If you’re trying to design things with noise reduction in mind, though, AN1075 from Freescale has some useful tips: Noise Reduction Techniques for Microcontroller-Based Systems. “Nothing is more important to circuit design than a solid and complete power system. An overwhelming majority of all EMC problems, whether they are due to emissions, susceptibility, or self compatibility, have inadequate grounding as a principal contributor.” A good gnd signal/plane and return path goes a long way to solving many of the more common problems, but there are a lot of other useful tips in this document that are worth reading over as well!
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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