The next time you pick up your clothes at the dry cleaner, send a thank you to the memory of Thomas Jennings. Jennings invented a process called ‘dry scouring,’ a forerunner of modern dry cleaning. He patented the process in 1821, making him likely the first black person in America to receive a patent.
Jennings was able to do this because he was born free in New York City. But for the great majority of black people in America before the Civil War, patents were unobtainable, as an enslaved person’s inventions legally belonged to his or her master.
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.