Monday, the Environmental Protection Agency announced that it had approved a new ingredient, called nootkatone, that repels and kills mosquitoes and ticks. The naturally occurring ingredient — which is responsible for the characteristic scent of grapefruit — was discovered by the Centers for Disease Control and Prevention and developed into an insecticide. It’s also found in Alaska yellow cedar trees and is widely used in the cosmetic industry to make perfumes and colognes.
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.