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RF Duinode

Hardware

Hardware

Arduino Zuletzt aktualisiert: 11. November 2016
Weiterlesen: RF Duinode

ADS-B Filter

FlightAware ADS-B Filter measured with miniVNAtiny

Allgemein Zuletzt aktualisiert: 27. September 2016
Weiterlesen: ADS-B Filter

IoT System management

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

  • CPU temperature
  • Power supply temperature
  • Average CPU load
  • Uptime of server
    IoT Internet of Things Zuletzt aktualisiert: 01. September 2016
    Weiterlesen: IoT System management

IoT MQTT Infrastructure

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:

  • The home infrastructure
  • The internet infrastructure

These components are detailed further down the page.

IoT Internet of Things Zuletzt aktualisiert: 01. September 2016
Weiterlesen: IoT MQTT Infrastructure

IoT MQTT configuration

Some basic config stuff for the RASPI & MQTT

IoT Internet of Things Zuletzt aktualisiert: 28. August 2016
Weiterlesen: IoT MQTT configuration

ELECRAFT K-POD

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

KP1KP2

Shack Zuletzt aktualisiert: 31. Juli 2016
Weiterlesen: ELECRAFT K-POD

Rotator control with a NodeMCU runs stable

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

Shack Zuletzt aktualisiert: 15. Mai 2016
Weiterlesen: Rotator control with a NodeMCU runs stable

Detailed measurement on audio CW-filter

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.

Shack Zuletzt aktualisiert: 06. Mai 2016
Weiterlesen: Detailed measurement on audio CW-filter

Audio CW-Filter finished

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

Shack Zuletzt aktualisiert: 05. Mai 2016
Weiterlesen: Audio CW-Filter finished

Wanderungen/Ausflüge

Hier eine Sammlung unserer Wanderungen/Ausflüge der vergangenen Jahre

 

  • 2015

  • 2016

 

Wandern Zuletzt aktualisiert: 26. März 2016
Weiterlesen: Wanderungen/Ausflüge

CW-Sensor-Keyer

Based on the work of John, M0UKD, I've build a small sensor-keyer. I used a surplus aluminium shelf and two aluminium stand-offs as "paddles".

See the evolution of this project here.

Shack Zuletzt aktualisiert: 12. März 2016
Weiterlesen: CW-Sensor-Keyer

IoT Lightsensor

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IoT Internet of Things Zuletzt aktualisiert: 03. Januar 2016
Weiterlesen: IoT Lightsensor

Worked all Germany contest 2015

This was my first participation in the WAG contest since 2010 - and I must say, it was a pleasure!

I managed to complete 472 QSOs all in CW :-)

 

Allgemein Zuletzt aktualisiert: 18. Oktober 2015
Weiterlesen: Worked all Germany contest 2015

ELECRAFT K2 - Fixing VFO ALC issue

I've planned to sell my ELECRAFT K2 so I placed some adds in the various HAM sources and I found a buyer willing give my K2 a new home.

Fortunately I decided to do a quick check on the K2 functions, to be sure, that the buyers receives a full functional K2.

I did the check in the late afternoon on 80m and I was shocked - strong stations can be received every 7kHz. Testing the transmitter shows a totally unstable RF signal.

Transceiver Zuletzt aktualisiert: 08. Juni 2015
Weiterlesen: ELECRAFT K2 - Fixing VFO ALC issue

LF-Converter

I've ordered the LF-converter BX-082 kit from the German HAM Radio magazine FUNKAMATEUR already some months ago and now found the time to build and test it.

Transceiver Zuletzt aktualisiert: 30. November 2014
Weiterlesen: LF-Converter

SMD Solder Station

It all started with an article in the issue July 2014 of the German amateur radio magazine FUNKAMATEUR. Martin Kumm, DC3MKB published in this issue an interesting article for a smart SMD soldering station based on the well know ARDUINO UNO.

Tools Zuletzt aktualisiert: 16. November 2014
Weiterlesen: SMD Solder Station

Connecting an Arduino to MOSQUITTO

In this post, I've showed, how to setup Mosquitto on an Windows 8 machine. Now let me describe, howto connect an Arduino via Ethernet to the running Mosquitto MQTT broker.

Arduino Zuletzt aktualisiert: 26. Mai 2014
Weiterlesen: Connecting an Arduino to MOSQUITTO

Getting started with MOSQUITTO

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:

Arduino Zuletzt aktualisiert: 26. Mai 2014
Weiterlesen: Getting started with MOSQUITTO

Getting started with 2lemetry

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.

Arduino Zuletzt aktualisiert: 26. Mai 2014
Weiterlesen: Getting started with 2lemetry

Neuer DARC Image Film

Ein richtig gut gemachter Film des DARC!

Allgemein Zuletzt aktualisiert: 22. November 2013
  1. nanoKeyer - neue Frontplatte
  2. Capacitive (water) level sensor
  3. MODBus shield
  4. MODBus master
  5. MODBUS slave
  6. Capacitive level sensor - electrode design
  7. MODBus Node with level sensor
  8. Arduino Home Automation
  9. MODBus - register usage
  10. nanoKeyer - Extensions - 2nd
  11. nanoKeyer -Extensions
  12. Zusatzschaltungen für Arduino etc.
  13. Update I2C LCD-Library for Arduino
  14. nanoKeyer - Arduino based memory keyer
  15. Digital-Multimeter comparision
  16. Splitter/Combiner - Funkamateur.de
  17. KW-Antenne MP1
  18. Hochleistungswiderstand
  19. Mini Morsetaste SQUEEKY
  20. ShackController
  21. Reverse Beacon Network
  22. Dune HD Smart B1 + S-Video
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DL2SBA
  • Home
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      • GPSDO
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  • Ham-Radio
    • About
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  • Nature
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  • For sale
  • NOAA
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