My MQTT server also has some basic systems management capabilities - means the MQTT server can emit the following data to the MQTT broker:

Since the beginning of my home automation project I made several tests to choose the right platform and right controller. I've done test with various sensor technologies etc. etc.
Most of the articels can be found in the Arduino category.

One decision was, that my webhost should be the main datastore for all data measured. With this decision, I've started to build a data collection and distribution infrastructure. The complete setup consists of two major components:

These components are detailed further down the page.

Details
Kategorie: IoT Internet of Things

Some basic config stuff for the RASPI & MQTT

Details
Kategorie: IoT Internet of Things

Last week I received my long awaited K-POD from QRP-Project in Berlin.

KP1KP2

Details
Kategorie: Shack

My proof-of-concept works pretty stable - please check the status screen:

Details
Kategorie: Shack

Here I've build an audio CW-filter based on the circuit from NM0S/4SQRP.

This filter works pretty well. I've done some audio analysis using a cheap soundcard from BEHRINGER and the shareware application AUDIOTESTER.

Details
Kategorie: Shack

Now I've finished the Audio CW-filter I've decribed here in details.

Details
Kategorie: Shack

Basics

Inspired from the work of EA4TX and K3NG I decided to check, whether the ESP8266 based NodeMCU 1.0 (ESP-12E) is usable as a simple remote IP-based rotator control. You can get the NodeMCU in a decent quality on eBay.

Idea was, to link a local emulated serial port to the NodeMCU module. The HAM Radio applications are communicating via the standard Yaesu GS232A protocol with the emulated serial port.  This emulated serial port then forwards the serial requests to the NodeMCU.

Details
Kategorie: Shack

Hier eine Sammlung unserer Wanderungen/Ausflüge der vergangenen Jahre

 

 

Details
Kategorie: Wandern

  1. CW-Sensor-Keyer
  2. IoT Lightsensor
  3. Worked all Germany contest 2015
  4. ELECRAFT K2 - Fixing VFO ALC issue
  5. XPhase - Interference reduction
  6. LF-Converter
  7. SMD Solder Station
  8. Connecting an Arduino to MOSQUITTO
  9. Getting started with MOSQUITTO
  10. Getting started with 2lemetry
  11. Neuer DARC Image Film
  12. nanoKeyer - neue Frontplatte
  13. Capacitive (water) level sensor
  14. MODBus shield
  15. MODBus master
  16. MODBUS slave
  17. Capacitive level sensor - electrode design
  18. MODBus Node with level sensor
  19. Arduino Home Automation
  20. MODBus - register usage
  21. nanoKeyer - Extensions - 2nd
  22. nanoKeyer -Extensions
  23. Zusatzschaltungen für Arduino etc.
  24. Update I2C LCD-Library for Arduino
  25. nanoKeyer - Arduino based memory keyer
  26. Digital-Multimeter comparision
  27. Splitter/Combiner - Funkamateur.de
  28. KW-Antenne MP1
  29. Hochleistungswiderstand
  30. Mini Morsetaste SQUEEKY

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

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