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.
Status panel for the Rack box project
A desk panel box full of LEDs, buttons and switches. Built for the rack box project.
Emergency LED strobe, AVR controlled
33 high intensity LEDs are controlled with a AVR ATtiny2313 microcontroller. Four flashing patterns that can be set manually or cycle through. Uses an AVR ATtiny2313 microcontroller.
Serial interface for emergency power off — AVR
RS-232 interface module, with voltage measurement. Used to communicate with the emergency power off unit in the Rack box project. Installed inside Rack box status panel. Uses an AVR ATmega8 microcontroller.
Temperature and light sensor, with LEDs — AVR serial module
Light intensity and temperature sensors; with white, green, yellow, red and blue signal LEDs and a buzzer. RS-232 communication. Uses an AVR ATmega8 microcontroller.
