All information regardung vna/J is moved to my new site

http://vnaj.dl2sba.com

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Kategorie: vna/J

In case you've bricked the UNO bootloader or even the USB bootloader in the ATMEGA16U2, this may help ...

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Kategorie: Arduino

For the main power distribution in my house, I also build a powersensor. The basic idea is the same as for this sensor. But the electric meter is already build into the distribution cabinet, so this power meter uses the so-called S0 bus of the power meter inside the cabinet.DSCF4078

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Kategorie: IoT Internet of Things

This is my first power/voltage sensor I've build. It is based on an commercially available powermeter from B+G E-Tech. You can find them on eBay or their website. It provides a 90ms pulse for each Wh flown through it.6Q7A7842

The line voltage is measured using a simple transformer and a circuit based on the schematic from OpenEnergyMonitor. The software to measure the line voltage is also from OpenEnergyMonitor embedded into my sensor framework.

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Kategorie: IoT Internet of Things

Based on the code  from Makis, SV1AFN I have created a small library to access the AD7887 ADC converter. The library is pretty simple to use.

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Kategorie: Arduino

Hardware

Hardware

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Kategorie: Arduino

FlightAware ADS-B Filter measured with miniVNAtiny

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Kategorie: Allgemein

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.

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Kategorie: IoT Internet of Things

Some basic config stuff for the RASPI & MQTT

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Kategorie: IoT Internet of Things

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

KP1KP2

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Kategorie: Shack

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

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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.

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Kategorie: Shack

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

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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.

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Kategorie: Shack

Hier eine Sammlung unserer Wanderungen/Ausflüge der vergangenen Jahre

 

 

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Kategorie: Wandern

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.

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Kategorie: Shack

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

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Kategorie: IoT Internet of Things

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 :-)

 

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Kategorie: Allgemein

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.

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Kategorie: Transceiver

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