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• Charly's Column – SparkFun

  Is your neighbor burning the wrong kind of wood or did a couple of VWs just pass by your house? Charly finds out with a sensor. For an attractive approach to visualizing boring measurement figures, you can either use your own web server or rely on a specialized service like SparkFun.

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• Charly's Column – Reverse SSH Tunnel

  This month, Charly Kühnast draws attention to a widely unknown weather phenomenon: The instability of rarely used tunnels leading to a Raspberry Pi. Read on for greater insights.

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• Charly's Column – Mi Flora

  Columnist Charly Kühnast recently attached Mi Flora humidity sensors to his potted plants. At first, they only transmitted junk on Bluetooth, but armed with the right tools and a Rasp Pi, Charly now reaps a rich harvest of data.

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• Hue and Rasp Pi

  Since his Trådfri Smarthome article over a year ago, sys admin columnist Charly has been receiving messages from readers with two questions: "Can you do that with the Philips' Hue system?" and "Can this also be done with a normal brightness sensor?" Yes and yes!

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• ESPHome

  With an ESP32 or Raspberry Pi Pico W microcontroller board, you can easily create your own home automation devices. Thanks to ESPHome, you don't even have to be a programmer.

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