Alasdair Allan is the author of Learning iPhone Programming, Programming iPhone Sensors, Basic Sensors in iOS, Geolocation iOS, iOS Sensor Apps and Arduino and Augmented Reality in iOS, all published by O’Reilly Media. He is a senior research fellow in Astronomy at the University of Exeter. As part of his work there he is building a distributed peer-to-peer network of telescopes which, acting autonomously, will reactively schedule observations of time-critical events. Notable successes include contributing to the detection of the most distant object yet discovered, a gamma-ray burster at a redshift of 8.2. Alasdair also runs a small technology consulting business writing bespoke software, building open hardware and providing training. He sporadically writes blog posts about things that interest him, or more frequently provides commentary about them in 140 characters or less.
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.
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