After my first experiments with 2elemtry, I decided to give MOSQUITTO a try. Mosquitto is a small MQTT message broker, which provides basically the same functionality like 2lemetry.

Here the steps, I got Mosquitto up und running on my Windows 8 machine:

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Kategorie: Arduino

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

  1. MODBus Node with level sensor
  2. Arduino Home Automation
  3. MODBus - register usage
  4. nanoKeyer - Extensions - 2nd
  5. nanoKeyer -Extensions
  6. Zusatzschaltungen für Arduino etc.
  7. Update I2C LCD-Library for Arduino
  8. nanoKeyer - Arduino based memory keyer
  9. Digital-Multimeter comparision
  10. Splitter/Combiner - Funkamateur.de
  11. KW-Antenne MP1
  12. Hochleistungswiderstand
  13. Mini Morsetaste SQUEEKY
  14. ShackController
  15. Reverse Beacon Network
  16. 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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