Persistence of vision (POV) is the illusion of a solid image where there is none — a task for which LEDs and microcontrollers are a natural fit. Poi is a performance art of spinning tethered weights. Some of the most dramatic performances use fire poi! We sought to create something with that level of “wow,” but safer and usable indoors or out. And so these “Genesis” POV-poi were born.
Light-up Frisbee-like discs have been on the market for quite a while, by now, and that's all well and good, but what fun is a blinkenlight if you can't write programs for it? And why would you stop at one blinkenlight? With these questions firmly in mind, we'll explore adding a Gemma-controlled 24-LED NeoPixel ring and a vibration sensor to the Flashflight Disc-O.
Incorporating Bluetooth in a project no longer requires the most advanced microcontroller or lots of code…our Bluefruit LE UART Friend and accompanying app for iOS and Android make it easy! Building upon our popular "Kaleidoscope Eyes" NeoPixel goggles project, this guide shows how Bluetooth LE can be used even with the most modest setup.
Digital RGB LEDs like the Neopixel are greatfor creating awesome lighting effects. But keeping them responsive to user inputs at the same time can be challenging. And what if you want to have different parts of your project animated in different ways? In this guide, we'll explore techniques to make your pixel patterns lively, flexible and responsive.
For transit-bound people, NextBus — a free internet service providing arrival data for over 135 transit agencies — is a tremendous convenience. Knowing when a bus is due means less standing out in the rain…one can use that time inside to get a little extra work done, or finish that cup of coffee. Using the Raspberry Pi computer, we’ll create a dedicated NextBus “appliance” that informs at a glance.