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.
The Black Widow pulsar (PSR B1957+20) rotates at a frequency of 622.1 Hz, producing a radio signal can be heard as an Eb note when converted into sound. The pulsar gets its name from the fact that it is slowly destroying its partner, using its wind to blow material off the surface of the brown dwarf. This creates a clumpy comet-like tail of plasma that passes between the pulsar and Earth every 9.2 hours. The tail acts like a giant magnifying lens (or amplifier) causing the series of irregular flickers you can hear in the pulsar’s signal. Is the brown dwarf trying to signal S.O.S.?
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.