During my researches for my home automation project I also stumbled across the MQTT protocol for sensor-server-communication. A matching arduino library was found quickly here on Nick's blog. An arduino sketch was quickly copied from here and modified. Download my version from here.

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Kategorie: Arduino

Ein richtig gut gemachter Film des DARC!

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Kategorie: Allgemein

Für den ersten nanoKeyer habe ich mir zwar das Original-Gehäuse gekauft, aber der Einfachheit halber eine simple Alu-Fronplatte genommen. So richtig schick war die auf Dauer nicht. Es wurde langsam Zeit, dass er noch eine schöne Frontplatte bekommt.

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Kategorie: Shack

The electronics for my capacitive (water) level sensor is described here. In this article I will go a little bit in depth regarding the sensor reading and value compensation.

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Kategorie: Arduino

This is the second PCB I've developed. It is an arduino-shield for my home automation project. It is also devoped using CADSoft EAGLE and was produced by PCB-Devboards in Germany.

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Kategorie: Arduino

The hardware for the MODBus master is mounted on DIN-rails inside a cheap installation box.

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Kategorie: Arduino

The MODBUS-slave with the capacitive water level sensor is now mounted inside a die cast aluminium case.

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Kategorie: Arduino

In the previous article regarding the capacitive water level sensor, I've presented two different electrode designs:

  • A coaxial electrode made from a rectangular aluminium tube an a  single isolated wire as "central conductor"
  • A simple twin-wire electrode made from simple speaker-wire

Here my findings regarding each electrode.

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Kategorie: Arduino

This is a MODBUS-node with a capacitive water level sensor, a DS12S80 temperature sensor and a RS485 interface to the main controller.

This is my first project based on CADSOFT Eagle free-version. I still have to learn a lot for creating 2-layer PCBs :-/

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Kategorie: Arduino

  1. Arduino Home Automation
  2. MODBus - register usage
  3. nanoKeyer - Extensions - 2nd
  4. nanoKeyer -Extensions
  5. Zusatzschaltungen für Arduino etc.
  6. Update I2C LCD-Library for Arduino
  7. nanoKeyer - Arduino based memory keyer
  8. Digital-Multimeter comparision
  9. Splitter/Combiner - Funkamateur.de
  10. KW-Antenne MP1
  11. Hochleistungswiderstand
  12. Mini Morsetaste SQUEEKY
  13. ShackController
  14. Reverse Beacon Network
  15. Dune HD Smart B1 + S-Video

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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