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1  Using Arduino / Networking, Protocols, and Devices / Arduino as a ReverseBeaconNetwork Client on: April 14, 2013, 04:29:21 pm

this is of interest for ham radio amateurs. I had nothing to do and was looking at the Reverse Beacon Network to find some new contacts. That's when I had the idea of redirecting the DX-spots to my Arduino. The Arduino is connected to a telnet server and the messages are interpreted and displayed on a RGB Shield. It is nothing special but may help to find some new interesting contacts via CW and the Reverse Beacon Network is really fast and so is my Arduino.

Details as usual on my blog:

Stay tuned!
2  Using Arduino / Sensors / Re: dh11_test1 on: April 11, 2012, 10:09:12 am
Thanks for the hint. I will have a look and afterwards I have to buy the dht22  smiley-roll-sweat

3  Using Arduino / Sensors / Re: dh11_test1 on: April 11, 2012, 09:57:20 am
Hello robtillaart,

sorry for occupying the bandwidth. I erased everything on the disk which had the dht11 in the filename and installed the files new and it: Worked.

Thanks for your advice and patience. I made a longer pause programming with the Arduino and noticed that since the new version a lot has changed and I have to adapt my older programs.

4  Using Arduino / Sensors / Re: dh11_test1 on: April 11, 2012, 04:32:13 am
Hello MarkT,

sure I use 0.4.0.  smiley-cool

5  Using Arduino / Sensors / dh11_test1 on: April 10, 2012, 12:51:21 pm

I have an Arduino Uno and the new version arduino-1.0. I have downloaded the program and the *.h, *.cpp files from

When compiling I get the error message:
dht11_test1.cpp.o: In function `loop':
C:\.../dht11_test1.cpp:72: undefined reference to `dht11::read(int)'

On line 72 of the dht11_test1.cpp there is not read(int).
The strange thing is that the file is called dht11.cpp and I did not find any reference to dht11_test1.cpp.

Any ideas.

Thanks in advance
6  Using Arduino / Sensors / Android Sensors and Arduino on: June 19, 2011, 02:11:17 pm
After reading a lot about different sensors I stumbled over my Android Phone which really has a lot of sensors, which could be used in a variety of projects.

  • KR3DM 3-axis Accelerometer
  • AK8973 3-axis Magnetic field sensor
  • AK8973 Orientation sensor
  • GP2A Light sensor
  • GP2A Proximity sensor
  • K3G Gyroscope sensor
  • Gravity Sensor
  • Linear Accelaration sensor
  • Rotation Vector Sensor

So I looked of ways to combine the Arduino with the Android and found the Amarino Project and ordered a Bluetooth card.

Has anyone additional experience with this combination? So far I gathered infos in my blog.

If you do not want to buy these sensors, the integration of both devices seems to be a good way. So now I have to study what could be done with a magnetic field or a gravity sensor  smiley-cool
7  General Category / General Discussion / Re: Android and Arduino on: June 19, 2011, 01:54:17 pm
Just forgot,

have a look at the Amarino Project. I ordered the BLUESMiFR today and will report later.

8  General Category / General Discussion / Re: Android and Arduino on: June 19, 2011, 09:06:11 am

there is a lot of information about connecting the Android and the Arduino. Have a look:
Q: Can the Arduino control an Android and vice versa?
9  Topics / Education and Teaching / Re: Q: Is the Arduino environment usefull for real life projects? on: April 15, 2011, 06:05:28 am

perhaps I should have formulated the question a bit more conservatively, but I focused it on the themes of my blog: instrument building, music software development and ham radio.

So please take into account, that I choose projects which were focused on my interests. I would be happy to add more projects from the "real" world. If you have suggestions, you are welcome.

My main points:
 - You can do what ever you want with a microcontroller. The limit is defined by memory and clock speed.
- The Arduino Environment (software and ports)is a great way to learn for a beginner and to prototype for an advanced user.
- When you want to develop complex scenarios you need (most of the time) more than one head and profound knowledge about the problem and software implementation.   
- Small is beautiful and I like to have a processor, lcd interface and ethernet on three little boards for little money.

10  Topics / Education and Teaching / Re: Q: Is the Arduino environment usefull for real life projects? on: April 14, 2011, 06:54:07 am
Thanks for the suggestion.


11  Topics / Education and Teaching / Q: Is the Arduino environment usefull for real life projects? on: April 13, 2011, 03:19:33 pm

after using the Arduino with various little projects, I made a round up of my experience with the Arduino environment. It is of course a personal view but shows what a beginner can do and when he should take more time to solve a problem smiley-cool. Have a look:

12  Using Arduino / Project Guidance / Re: A Must Have: Arduino Cookbook on: March 10, 2011, 04:32:31 pm
I just noticed: The Cookbook is printed and you can get only today a 50% eBook-Deal. Use discount code: DDARC

No, I don't get paid for that. smiley-cry

13  Community / Exhibition / Gallery / Re: MorseEbookReader is launched on: March 04, 2011, 06:28:49 am

The "GODS" demand to know the name of the level immediately below the LCD shield!!! smiley-lol  smiley-wink
(seriously, what is it? smiley-roll)

It is a break-out board and it was really cheap. I dont keep my projects. As soon as they function, they will be torn down and another configuration takes place. I hop the "GODS" are satisfied.
14  Community / Exhibition / Gallery / Re: MorseEbookReader is launched on: March 03, 2011, 12:05:50 pm
Hahaha! Awesome! You need to be good at Morse code, and German to understand that message. I happen to be good at neither. So you used the sd card on your ethernet shield to store a book and play it with Morse code, right?
Yes, I like Morse code and I hear up to 150 chars/min. But to be true, this is only a project: I do not hear books in morse code although others do to increase the speed. I use it only for ham-communication.

What baffles me is the height of the RJ45 socket on the ethernet shield. I have only read about it, 15.11mm tall. Will that make your LCD shield wobble on top of it?
Thats a real problem. Have a look at my Tower of Babylon. I used extra spacers. Otherwise it makes no fun.

What part of Phi-1 shield prevented it from being used on the ethernet shield?

It came too late  smiley-roll, the other shield was faster.

But I will give it later on a try.
And one last remark: Why use Morse code? It is still a very efficient way to talk to other people all over the world with a minimum of power and it is faster than sms :rofl:.

15  Using Arduino / Displays / Re: DFRobot LCD shield keypad problem on: March 03, 2011, 11:51:41 am
To save the digital IO pins, the keypad interface only uses one ADC channel.

That is the trick and the problem. Yesterday I found the bounce library and I will have a look at it:
It debounces digital inputs and more.

So I have to look at the "and more".  smiley-roll-sweat
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