articles tagged with 'programming'

Testing the Google+ API

Recently Google introduced a new API which enables developers to interact with their latest social networking service - Google+. Although the API is currently pretty limited, many nice apps have been written by developers all over the world. I myself gave it a try, too.

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A cheap IR remote for Nikon DSLRs

Figure 8
The IR remote

During a moment of boredom I decided to build an IR remote for my Nikon camera. Turned out it is a very simple and cheap project, perfect for a day with nothing else to do. The remote operates easily on distances of about 15 - 20 meters. It may be even more, but I haven't tested it yet.

Basically the remote contains a microcontroller which is powered by pressing the button. The controller then toggles an infrared LED at a frequency of about 38kHz and by that transmits the correct pattern to the camera. The remote is equivalent to Nikon's ML-L3 remote and works with a wide range of their cameras.

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The self-adjusting solar cell

Figure 14
The self-adjusting solar cell

The self-adjusting solar cell is a device that follows the sun automatically. By that it is able to gain a high amount of energy throughout the day. With this construction I have won the first prize in the "Stawag Solarfreaks" competiton 2008.

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The selfmade GPS logger

Figure 7
The opened GPS logger while charging

My first complex project in the field of micro-controller and electornics was the construction of a GPS logging device. I started the project in 2008 on occasion of a competition on mikrocontroller.net (embdev.net). The device is capable of storing a path that you drive or walk onto a SD memory card. By that, you can easily view the path on you personal computer afterwards.

News: I'm really glad to announce that my article on how to build the device has been published in the 9th issue of the embedded projects journal.

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The remote garage opener

Figure 6
The remote control

Life is a very complex thing. In january 2009, I've decided to make it at least a little bit easier by simplifying the process of opening the garage door. Instead of "running to the gate lock, inserting the key, turning the key, removing the key, running to the car" this whole process can now be done with just one button press from inside the car.

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