LCD unit driven by a computer parallel port

Very simple LCD unit with almost no external components, driven directly by a computer printer port.

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Module heartbeat monitor, 15 inputs — LCD and AVR

Detects and alerts if any of the monitored modules goes silent; meaning their heartbeat stops. Uses an AVR AT90S8515 microcontroller.

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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.

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