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We switched from a Velleman K8055 to a Raspberry PI!
You can find the corresponding projects here:
https://github.com/fabrik42/traffic-light-server
https://github.com/fabrik42/traffic-light-client-raspberry
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It is connected against our CI Joe continuous integration server to show us the current status of our checked-in specs/code. :)
- Red: Specs failed!
- Yellow: Specs are currently running on CI Joe.
- Green: Specs passed! :D
Aaand... of course we have a nice web interface:
The lights of the traffic light are controlled by a K8055 usb board.
Actually, we replaced the light bulbs in the traffic lights with LED clusters to save energy. :3
A complete wiring diagram is included.
We use a command line to control the usb board, so you have to compile a k8055 binary from here.
Note: We managed to do this on OS X Snow Leopard as well as on BusyBox (to run it on a DiskStation NAS).
A very special "Thank you!" goes to Markus Kinkel who created the wiring diagram and built the electronics of the traffic light. :)
We hope you enjoy it! :)