Blog of Frank Delporte, Java Champion, Software Developer, Technical Writer, Nerd/Geek

3D printed Pinecel soldering iron holder

The Pinecil is a very handy and affordable USB-C powered soldering iron (running on open firmware!) with an OLED monochrome display. This soldering iron is made by PINE64, and is delivered in nice carton boxes. But once you start using it, you quickly need another way to keep the different tips at hand.

HiveMQ Cloud, part 2 - Using MQTT and Raspberry Pi to Visualize Sensor Data on a TilesFX Dashboard

In the previous post we started our discovery of HiveMQ Cloud with Java on the Raspberry Pi. We created an application to send measurements of various sensors to the HiveMQ Cloud MQTT broker. Using an online websocket client we verified the transition of the messages, and could see the data being published to this online message queue.

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