alarm

Stack lights for Alertmanager using Raspberry Pi

I’m using Prometheus to monitor my home office and homelab, I figured it would be cool to have a stack light show the active warnings and alerts from Alertmanager. So I made a HAT (Hardware Attached …

AVR alarm disabling unit for production equipment

Simple unit to silence the audible alarm on a production equipment, uses an AVR ATtiny2313 microcontroller.

AVR alarm disabling unit for production equipment with long stop warning

Simple unit to silence the audible alarm on a production equipment, additional warning if not resolved within 30 or 60 minutes. Uses an AVR ATtiny2313 microcontroller.

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.

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.

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.

Wooden 2-post open rack frame

My first “rack” was made of wood. It monitored, meaning displayed and alerted, on some metrics on my Linux server. And controlled a few lights and the alarm system in my room. I really enjoyed making …

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.