Keypad with programmable PIN code, two outputs (modes) and protection against repeated incorrect PINs. Uses an AVR ATtiny2313 microcontroller.
Dual channel warning LEDs controller, with AVR
Two channel strobe light controller, using the AVR ATtiny2313 microcontroller. Five flashing patterns that can be selected manually or cycled through. PWM outputs.
Making kitchen cabinet LED lights
Two self made LED down-lights, each with four 10mm high-intensity LEDs.
LCD unit driven by a computer parallel port
Very simple LCD unit with almost no external components, driven directly by a computer printer port.
Intruder alarm system controller — AVR
A simple intruder alarm controller I build and used in my old apartment. Uses an AVR ATtiny2313 microcontroller.