Riepenhoff got the idea three years ago while studying cyanotypes, an old photo technique that involves placing objects on paper coated with iron and potassium ferrocyanide. When exposed to light, the paper turns a brilliant blue. She became obsessed with Anna Atkins, who made cyanotypes of seaweed in the 1840s. Tired of working the darkroom, Riepenhoff carried a few sheets of cyanotype paper to the beach near her Sausalito studio, curious to see the water’s effects. The results were stunning—conjuring the sand and waves on the paper.
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.