These were part of a giant message board that flashed “SLOW DOWN” when a driver would approach at a high rate of speed. They were sold to us because disgruntled drivers shot bullets into them – destroying some circuit traces. These use a large quantity of super bright daylight visible red LEDs and are about 15” Height x 21” Width (Total from 2 boards). The LEDs spell out “Slow Down”. We have no data but the set of 2 boards is being sold as is since atleast one or both of the boards have bullet holes in them.
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.