Archive for date: January 26, 2012

AVR-based FM-transmitter

January 26, 2012 | Atmel AVR, Microcontrollers | By: Mark VandeWettering

This is a very cute hack that does something which I thought was impossible: an implementation of an FM transmitter that has exactly two components: a battery and an ATtiny45 microcontroller. It’s brilliantly obtuse and cool: Sprites mods – AVR-based FM-transmitter – Intro, theory The basic idea is to trick the internal oscillator of the […]

Unequal Resistor R-2R Ladder Optimizer

January 26, 2012 | electronics | By: Mark VandeWettering

I was reading up on resistor ladder DAC circuits on Wikipedia, and came across the Unequal Resistor R-2R Ladder Optimizer. It’s very neat! You can enter the number of bits you need, and the values of the pile of resistors that you have measured from your bench, and it will produce an optimized design using […]

New 6502 processor at

January 26, 2012 | electronics | By: Mark VandeWettering

Dave Jones (@eevblog) tweeted: The 6502 is back: 1/26/2012 6:40 am via TweetDeckReplyRetweetFavorite @eevblog Dave Jones And indeed, he’s right! WDC (the Western Design Center) has made a new version of the 6502 available at It’s a 40 pin DIP package, listed at $6.95 in quantity one, and can be clocked up to […]