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Dirk Grappendorf
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Dirk Grappendorf

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I finally finished my 6502 CPU retro computer system.

http://www.grappendorf.net/projects/6502-home-computer

https://github.com/grappendorf/homecomputer-6502

The 8-bit MOS 6502 CPU was used in many popular home computers of the 1970s and 1980s like the Commodore 64 or the Apple II.

This project started with some basic circuit designs on a breadboard, went on with the production of a PCB, the development of firmware software, and finally finished with a custom designed 3D printed case.

I have published a short seventeen part article on my website that illustrates the complete development process.

All the schematics, PCB design files, and the source code are released under open source licenses on Github. The repository also includes various versions of these files, so that you can retrace my development progress.
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Jan Espen Pedersen's profile photoRui Nóbrega's profile photoMichael Nothbaum's profile photo
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Just finished reading your article. A trip down memory lane to University and my first job as a hardware designer/developer.
I used to design PCM and I/O boards around the 80C188 CPU.
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Dirk Grappendorf

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Congrats, Dave! Great content since 5 years. And what a progression from the first video to the current ones, while always retaining your very own style!
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Dirk Grappendorf

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If you use XBee modules for wireless communication with your embedded devices and you'd like to use Ruby to talk to them from your workstation, then my xbee-ruby gem might help. Despite that it currently supports only a small subset of the XBee API Mode 2, it is sufficient for sending packets to and receiving packets from remote XBee devices. I use this gem on the server side of my CoYoHo home automation system. The gem can be downloaded from RubyGems.org and the source code is hosted on GitHub.

http://www.grappendorf.net/software/xbee-ruby
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Dirk Grappendorf

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I've added a news plugin to my CMS to inform you about recent updates to my projects and changes to my website http://www.grappendorf.net. There is also a RSS feed available under the URL http://www.grappendorf.net/news.rss.
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Dirk Grappendorf

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I finally finished my 6502 CPU retro computer system.

http://www.grappendorf.net/projects/6502-home-computer

https://github.com/grappendorf/homecomputer-6502

The 8-bit MOS 6502 CPU was used in many popular home computers of the 1970s and 1980s like the Commodore 64 or the Apple II.

This project started with some basic circuit designs on a breadboard, went on with the production of a PCB, the development of firmware software, and finally finished with a custom designed 3D printed case.

I have published a short seventeen part article on my website that illustrates the complete development process.

All the schematics, PCB design files, and the source code are released under open source licenses on Github. The repository also includes various versions of these files, so that you can retrace my development progress.
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Paul Mansfield's profile photoMatt Godbolt's profile photoWill Robertson's profile photoMichael Nothbaum's profile photo
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Nicely done +Dirk Grappendorf ! This really brings back some memories... :)
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Dirk Grappendorf

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I hope you all had a nice #ArduinoD14!

To celebrate this day, i finished a first pre-alpha, technical preview, in no way usable, i.e. production ready version ;-) of my CoYoHo home automation system.

http://www.grappendorf.net/projects/coyoho

Information about this system, Eagle schematics and layout files, device firmwares and the server source code are available in the CoYoHo section of my website.

All of the remote devices of my home automation system are developed with the Arduino software framework. I'm not using the Arduino IDE, but Eclipse together with my own compilation of the Arduino core and a set of Arduino libraries. This combination provides a highly productive, fun to use and professional environment for developing embedded system applications.

With all the available Arduino libraries you get things done with the least possible expense. And most important for me: all of this works on the Linux operating system.

So a big thanks and thumbs up to all the people in the Arduino community! Keep on hacking!
Control Your Home (CoYoHo) is my DIY home automation and survaillance project. The aim is to create a totally wireless and scaleable system to control power switches (lamps and other electrical appliances) and measure values like temperatures, brightness and power consumption.
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Dirk Grappendorf

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BeagleBot: A cylindrical, differential drive robot controlled by a BeagleBone Black

I've built a robot for the Coursera course "Control of Mobile Robots", where you can "Learn about how to make mobile robots move in effective, safe, predictable, and collaborative ways using modern control theory."

I posted some pictures of my BeagleBot. Later on i'll add some more documentation and download links for the software...

http://www.grappendorf.net/robotics/beaglebot
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I'm a German software architect, currently working in the area of telecommunication systems.

Some of my interests are computer science, electronics and especially robotics and artificial intelligence. Visit my web site to learn about some of my projects.

Unless otherwise stated, all content in my G+ posts is released under a Creative Commons Attribution Non-Commercial Share Alike license. This license allows others to download works from my G+ posts and share them with others as long as they mention and link back to the post/my G+ profile, but they can’t use them commercially.
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