Posts tagged: raspberry-pi
A short update on my Raspberry Pi security alarm project
Quick recap: I’m building a DIY security alarm using a Raspberry Pi, hardwired PIR sensors, and MQTT integration with Home Assistant. Hello again — it seems to be close to a year since I last managed …
Measuring outdoor temperature with a Raspberry Pi and DS18B20 probe
We have a Dakboard digital calendar in our kitchen — showing lots of house and temperature data. So naturally; it must show the actual outdoor temperature as well. To do this I used a Raspberry Pi 2, …
Raspberry Pi security alarm — the basics
In November last year — I started building a DIY security alarm system, using a Raspberry Pi as the controller. My plan was to make a self-sustained system, using proper alarm hardware — like PIR …
Controlling the Raspberry Pi HDMI port — with MQTT and Home Assistant
We have a Raspberry Pi driven digital calendar in the kitchen. I’m currently using crontab to turn the HDMI port off at night, and when we’re at work. But a much more flexible solution is to control …
Kids traffic light, with Raspberry Pi Zero W
As the weather is warming up here in Norway — my kids have gotten their bikes out. To make it more fun, both for them and me, I figured I’d build a series of traffic signals that they could play with. …
Raspberry Pi DAKboard display
My girlfriend wanted a digital calendar on the kitchen wall; I made one with a 24" monitor, a Raspberry Pi and DAKboard.
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 …
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 …
Kids alarm module, Raspberry Pi Zero, and MQTT
A kids alarm module, with buttons and lights. Powered by a Raspberry Pi Zero, connected to WiFi and MQTT.
Getting the Raspberry Pi ready for IoT
A short guide on how to prepare your Raspberry Pi single-board computer for IoT use.
Stacked Raspberry Pi boards, with common power supply
I mounted four Raspberry Pi 3’s in an acrylic stack frame, and used a 5V 20A DIN rail mounted power supply to drive them all.