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 on Top) for the Raspberry Pi to drive a five-colored stack light.

Read more →

Raspberry Pi with DS18B20 temperature sensors

I made a simple HAT (Hardware Attached on Top) for the Raspberry Pi to read multiple DS18B20 temperature sensors — it was surprisingly easy. I used the measured temperatures to control a fan using Home Assistant.

Read more →

Kids alarm module, Raspberry Pi Zero, and MQTT

My twin boys are, like their dad, fascinated by switches and flashing lights. I needed an excuse to use the Raspberry Pi Zero in a project, so I built them a WiFi MQTT controlled alarm module. With a couple of switches, some panel indicators, a buzzer, and a blue LED strobe.

Read more →

Finding earth leakage on ATTEN 858D hot air gun

My ATTEN 858D hot air gun suddenly began tripping the residual-current device in my home office. Let’s investigate! 👇

Read more →

Electronics lab (2019)

My electronics lab is tiny, so I’ve had to make the best of the space I do have. Soldering with fume extraction, instruments like an oscilloscope, function generator, bench power supplies.

Read more →