Boingboing recently featured this beautiful Trommelwähler (try saying that five times fast!) vintage telephone. The phone belongs to the Herbert H. Warrick, Jr. Museum of Communications in Seattle, who tweeted out a video of the phone.
a cylinder that is rotatable about a horizontal axis instead of a dial . The drum has the ten digits corresponding to ten indentations; The user puts a finger into a recess and thereby rotates the cylinder downwards until the stop is reached. After releasing, the cylinder ran back again.
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.