In 1927, several million persons, in more than 100,000 petitions, urged Congress to establish the metric system of weights and measures in the United States, according to the Metric Association. The General Federation of Women’s Clubs also has called on Congress to scrap our present measures such as yards, rods, gills and pennyweights… Many manufacturers here opposed the change, citing the cost of the conversion (article).
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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How can several million people send in 100.000 signatures.