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QtSoundModem with U5Link & Yaesu FT-897

QtSoundModem with U5Link & Yaesu FT-897 for HF Packet

How to configure your Raspberry Pi with QtSoundModem, an U5Link USB to Yaesu adapter and the Yaesu FT-897(d). The following article from PE1RRR provided me information on where to find Packet on the HF band (20 meters) and I had to try it out. I’m running my HAM Radio software on a Raspberry Pi […]

TTN Gateway upgrade Stack v3

The TheThingsNetwork v2 stack is deprecated and the nodes and gateway have to be upgraded to the V3 stack. I have a DIY gateway running with an IMST IC880A-SPI LoRa board. I was looking for the easiest way to upgrade the gateway and found a standard install via Using this I moved to the […]

Yaesu FT-65 – TNC Cable

After 26 years I wanted to experiment a bit with packet radio again. Packet Radio is not used that much anymore, but there is still some activity. Around 1995 I was active on 27MC, but this time I wanted to try the 2 meter/70 cm band and recently passed my license exam. So now I […]

Platform IO flash firmware

Platform IO flash firmware

I started using PlatformIO as replacement of the Arduino IDE. At first it was a bit harder to work with, but it has a lot of great features and after a while it is way more efficient than the Arduino IDE. Especially the libary management is a big plus. This page is to give a […]

Build status light for DevOps

Build status light for DevOps

Since we are nowadays working from home, it makes not really sense anymore to have a ‘Build Status Light’ with a ‘Broken Build Siren’ at the office. I wanted to do something fun and created a personal ‘Build Light’ for my team members.  The device is build using some cheap components and is very easy […]

Wanhao Di3 Marlin Firmware

My Wanhao Duplicator i3 printer was still running on its initial firmware. This firmware lacks thermal runaway protection which is an important feature which can prevent fire. Thermal runaway protection stops heating the extruder when there is no temperature increase for a set period. This can happen when your thermistor is disconnected for example. I […]

Measure water usage

I’ve created a mount for the Sensus 620 watermeter to mount a  LJ18A3-8-Z/BX-5V proximity sensor on top of it. The sensor is connected using the schematic which can be found here. Instead of using a Raspberry Pi, I use a Wemos D1 with Tasmota firmware. The 3D print design can be found on Thingiverse.