Do you know what is a time clock?
Time clocks were mainly used at the end of the 19th century and throughout the 20th century as a way to monitor precisely the attendance of employees in big companies and factories. Back then, it was often a paper card that the employee would slip into a machine that pinched the right time box or print it. Its concept has, of course, evolved a lot since then and most models now integrate RF or biometric technologies.
Those new machines are pretty expensive (at least $100) so we propose you to create your own fun time clock machine to monitor your employees (if you’re a CEO/HR) for less than $40 (again!) but which you can also adapt to any other use (monitor your pet’s in and outs through its pet door for instance).
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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