Month: August 2008

Dot matrix business card

Tom Ward, whose work will appear in The Best of Instructables book we’re currently editing, has just posted an awesome new “extreme business card.” It uses a matrix of 5×15 0603 LEDs driven by a PIC16F57 MCU. He says you can get the parts cost down to about $5 each in quantity. Not the kind […]

A simple Marx Generator

A simple Marx Generator

You may think a Marx Generator is a device for spitting out strident communist rhetoric, but it’s actually a type of high-voltage circuit for spitting out HV pulses. This is probably one to put in the “Don’t Try this at Home” or “Touch = Die” file as we are dealing with current here that can […]