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Sound alarm control unit — AVR module

Simple unit to control three sound signals; beep, siren and buzzer. Uses an AVR ATtiny2313 microcontroller.

Fan controller with LCD — AVR powered

Reads temperature and controls a fan using a PWM output, fan and alarm set point can be adjusted and is shown on a LCD. Uses an AVR ATmega8 microcontroller.

Controller for lights and relays — AVR driven

Control three lights or relays, with toggle switches and status LEDs. Uses an AVR ATtiny2313 microcontroller.

Module heartbeat monitor, 6 inputs — AVR

Detects and alerts if any of the monitored modules goes silent; meaning their heartbeat stops. Uses an AVR ATtiny2313 microcontroller.

Mute and light controller for the Rack box — AVR module

Controlling mute and lights in the rack box project. Uses an AVR ATtiny2313 microcontroller.

Stack lights and horn controller — with AVR

A control module for a green, yellow and red stack light, and signalling horn. Uses an AVR ATtiny2313 microcontroller.

Power supply and fuse monitoring module, AVR

Simple monitoring module for the essentials in the rack box project; power supplies, fuses and communication. Uses an AVR AT90S2313 microcontroller.

AVR production line stop alarm

Simple alarm circuit to monitor up to eight inputs, from e.g. production equipment. If any inputs are triggered an alarm is sounded. Uses the AVR AT90S2313 microcontroller.