Here are three projects that need our help and are worth investing in:
What are Revolights? Revolights consist of 2 thin profile LED rings (white in front, red in back) that mount directly to each wheel rim (just below the brake calipers) using a series of rim specific clips. Power is supplied via a thin wire to the hub where a lightweight and slim, USB rechargeable polymer lithium-ion battery is held in a special bracket. A small magnet is secured to the fork to provide speed and orientation information to the rings.
PenMoto is a magnetic ring that quickly retrieves and stores a pen making it possible to transition from writing to typing with the simple flick of a finger. The self-sizing ring and coupler adapt to nearly any pen or stylus, and is ideal for a Wacom pen.
3.) Rockit 8 Bit Synth Kit
The goal of the Rockit 8 Bit Synth is to make an inexpensive open-source synth kit. For musicians, Rockit will be a source of gnarly full-blown synth sounds and, for hackers and electronics enthusiasts, Rockit will be an engaging electronics project and a platform for synth exploration. I’m near the end and I’m glad to report that Rockit rocks on both counts. The synth makes deep fat bass, chip noise leads, sci-fi robot weirdness and everything in between. The hardware is well-documented and the code is written in easy to follow C with ample comments, so the average electronics geek will find a project with enough depth to keep them busy for a good while.