The Glowies were built around a PIC12F675 microcontroller which has built-in analog to digital converters while the core of the unit is a silicon diode used as a temperature sensor.
The Caps Locker is a device that plugs into a USB port and takes control of a computer’s Caps Lock key which switches it ON/OFF at 30-second to 8-minute intervals.
The RGB LEDs contain full color pixels arranged in 16 wide by 24 tall arrays which can be used to display informational graphics, audio visualizations, and tunable ambient lighting.