Technology

HOW TO – Make LED Throwies

HOW TO – Make LED Throwies

Resistor writes – “Developed by the Graffiti Research Lab, LED Throwies are an inexpensive way to add color to any ferromagnetic surface in your neighborhood. A Throwie consists of a lithium battery, a 10mm diffused LED and a rare-earth magnet taped together. Throw it up high and in quantity to impress your friends and city […]

The Nilno Laser Fab

The Nilno Laser Fab

Smouldering-Dog writes – “This is from my site. It describes construction of a simple microcontroller circuit that has user I/O, two seven segment LEDs, a buzzer and A/D converter. It was originally made to drive a CO2 laser but the new firmware can be installed on the microcontroller to program the board to perform other […]