Circuit board business cards have been done. But since circuit boards are, literally, my business, I felt that I needed one too. Of course it also had to be special. Research and experimentation took a long time with this one and the design even sat dormant, ready, for a while before I sent it out to fab.
The concept was to have throughole components embedded within the PCB and soldered lying down. The components — two resistors, LED, NPN MOSFET, and a capacitor — form a complete circuit so that when voltage is applied, the LED turns on.
It’s meant to be an engineer’s emergency kit. When all hope is lost, the MacGuyver engineer could snap out one of the components and save the day.
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.
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