Inter-Tech 4U-4129-N server case

Inter-Tech 4U-4129-N server case

I recently got a new rack mountable case from Inter-Tech — it was surprisingly cheap 😃 This is going to be the new server case for my hypervisor Alpha. Here are my thoughts, and some photos.

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Raspberry Pi with DS18B20 temperature sensors

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.

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Kids alarm module, Raspberry Pi Zero, and MQTT

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.

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Altibox 6rd on OPNsense

Altibox 6rd on OPNsense

Dropping the Altibox router/modem, and getting IPv6 using 6rd to work on OPNsense.

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Mirrors moved from the homelab to Terrahost

Mirrors moved from the homelab to Terrahost

I’ve been hosting repository mirrors from my homelab rack for a while. I first set up Archlinux in May 2018, then followed OPNsense, Cygwin, MariaDB, Raspbian and lastly Manjaro — now they are in a Terrahost datacenter instead.

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Ventilation and fume extraction rebuild

Ventilation and fume extraction rebuild

I rebuilt the exhaust ventilation late 2017, but shortly after — I did the homelab ventilation project and had to remove parts of the exhaust system because it was in the way of the new insulated ducts. Time to rebuilt it!

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Encrypting TCP traffic between rsyslog and Graylog

Encrypting TCP traffic between rsyslog and Graylog

All my homelab servers and containers send their logs to a local Graylog instance. I wanted my VPS to do that as well — but sending unencrypted logs over the internet is not a good idea.

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Checking HTTP redirects with Prometheus

Checking HTTP redirects with Prometheus

To make sure my HTTP redirects were valid, and pointing to the correct location — I added a Prometheus Blackbox exporter module 👇

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Finding earth leakage on ATTEN 858D hot air gun

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! 👇

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Website redesigned and simplified (again)

Website redesigned and simplified (again)

It’s not long ago that I redesigned this website, and now — two months later I am doing it again… So why?

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