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The PCB for my very first Arduino shield arrived today from BatchPCB. At first glance everything looks good. The silkscreen with my name and web address didn’t come out so well but …

Random numbers are a relative concept. In general, random numbers used in digital electronics are called Psuedo-Random sequences. There is a defined algorithm that is used to …

One of the major feature updates for the iPhone 4 included a gyroscope. There are two applications that a gyroscope can be used for: keeping an object in balance and providing …

The folks over at Seedstudio have created a first for Arduino: a FPC version! In the past, it was very common for this material to be used as interconnects between circuit boards …

Electronic communications systems are made up of three basic components: a transmitter, a receiver, and a transmission medium. Use a video game system with a wired controller as an …

In July, I left on a trip that took my friend and I around the world. While traveling, I kept a blog of the trip at trip.cmiyc.com.We visited New Zealand and Australia during …

TLC5940NT Painter Board This screen shot is an all-layer view of my TLC5940 painter board. The 1st draft featured two TLC5940s, but I decided it made the board too large. Instead, …

This pattern is called Row Your Boat. As one of the strips starts to get brighter, a nearby strip will join in the fading. After completing a fade cycle, they start switching …

Quick schematic in gschem running on OS X. In an attempt to find a free set of schematic and PCB tools for hobby work, I looked back at gEDA. The last time I used it was when the …

Landing on water isn’t easy. In fact, most aerospace engineers never considered it possible. see more Political Pictures