Directly controlling an OLED display via HDMI.

I enjoyed this presentation by Ted Yapo about his DIY sampling scope.

Successfully executing a replay attack against a wireless key fob using inexpensive hardware and GNU Radio (based on Samy Kamkar's original hack).

This TTL computer looks like an interesting design:

- It implements an 8-bit RISC CPU with an 8-instruction CPU using a surprisingly small number of chips: just 36 standard TTL chips, a ROM, and an SRAM chip.

- The VGA output is generated entirely in software with no additional graphics hardware (other than a resistor DAC). User code runs only during the hsync and vsync periods.

- The ROM kernel takes care of all the VGA timing and runs a virtual machine which presents itself as a 16-bit CPU and includes an interpreter so programs can be written in a high level language.

This review makes me want to play with these microcontrollers.

A comparison 21 different microcontrollers — all less than $1.

I'm not sure where this came from (some class handout?) but it is a very nice guide to hand-drawing Bode plots.

Two little boost converters from a single 8-pin ATtiny uC.