Music Stand with Multimode Feature

Four Theremin-type electric field sensors are incorporated by this Multimodal Music Stand (MMMS) along with a microphone and a video camera as input sources for the performance of computer music and electro-acoustic compositions.

Circuit Bent Keychain Used to Make Easy Dub Siren

Illustrated in this simple project is the creation of an Easy Dub Siren from a Circuit Bent Keychain along with a bunch of components.

Digital Thermometer in Wireless Form

This digital thermometer project uses any standard FM broadcast band radio at regular intervals in order to report the temperature.

An Alternative Pixie Known as The AP-80

The project is an improved design of the Pixie which originally consists of an LM386 audio amp and just two transistors.

I2C Interfaced with NXT

The goal of the project is to provide 8 digital I/O ports with the NXT by using a simple I2C chip with either binary input or output on each one of these 8 ports.

Frequency Counter and Timer Development

The project employs a sliding window for calculation of multiple frequency updates per second on this frequency counter and timer.