Adafruit will not be shipping USPS orders Monday February 18, 2019 for the federal holiday, Presidents Day.
Expedited USPS orders placed after 11am ET Friday February 15 will go out Tuesday February 19.
On this day in 1868, the French astronomer Pierre Jules Cesar Janssen was the first to observe the element of helium in space, before it had ever been observed on Earth.
However, despite all of his globe-trotting expeditions, Janssen’s greatest discovery was outside of our atmosphere. On 18 August 1868, while observing the great Indian eclipse at Guntur, he spotted a bright yellow line in the spectrum of the Sun’s chromosphere (the second of the three layers of its atmosphere), with a unique wavelength of 587.49 nm; a couple of months afterwards, on 20 October 1868, Joseph Norman Lockyer independently spotted that same line. He concluded that because this particular spectral line had never been seen before, it must show an unknown element, and he called it helium after “helios,” the Greek word for “sun.”
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.