All posts on July, 2008
These two chips provide an easy way to control either an array of 64 Led’s or up to eight digits made of 7-segment displays with a minimum of electronic components. Besides the chip itself you will need only a single resistor and one or two capacitors. Data is send to the chip using a SPI-compatible protocol using 3 of the digital pins on the arduino. If you want control more than eight 7-segment displays (or more than 64 Led’s) the chips can be cascaded.[more]
This is a board for making the Arduino into a portable stand alone music synthesizer. It plugs directly into the Arduino board and provides 25 multiplexed keys (2 full octaves), 4 pots, status LED, reset switch, digital to analog converter IC, and a RCA audio jack. The Arduino board with its powerful AVR processor is more than adequate for a wide range of sound synthesis techniques. [more]
The control consists of four potentiometers, one each for frequency, duration, tempo, and volume. The first three are simple 100K linear pots wired as voltage dividers. The fourth is a 100k audio taper wired in the traditional volume circuit. The switches for each of the slots are simple momentary SPST devices and another is added for the start stop function. A central red LED is wired in as a tempo indicator.[more]
Touch is a project to allow two people to touch each other’s fingers over any distance across the Internet.Touch uses two force sensitive resistors to feel the force(by touching) then the data is sent over the internet to the server and sent back to the fingers.This project uses CUBLOC CB220 microprocessor and Lantronix Xports for IP comunication.[more]
If you need a power supply that can deliver high currents to give a couple of example of possible uses; power source for an 12V car amp, cheap alternative for replacing your broken WLAN access point, flatbed scanner, printer, LCD monitor, or whatever -transformer. Or as in my case: a lab power supply.Consider converting one from an old PC.[more]
