Raspberry Pi Camera Car Demo
Their dad and they built a model railroad in the early 2000's when they were in middle/high school. After 10+ years of mostly neglect, they're doing some new projects and upgrades. A lot has happened in the electronics hobby since then, and it's fun to get their dad involved with Arduino, Raspberry Pi, and other programming/electronics projects. They've wanted to stick a camera in a model train for a long time, but now it is technically possible to stick a full-blown Linux quad-core computer on board and stream real-time 1080p video for an incredible first-person view. They built a little train car out of scraps that lets the camera rotate with the wheels.
The railroad uses DCC with the Digitrax DB150 base station. They've connected it to a Raspberry Pi 3 running JMRI so they can drive trains with the Engine Driver app or the web throttle, in addition to the physical Digitrax controllers. The next project is replacing all of the toggle switches that run turnouts with Arduino-based controllers that can receive control from DCC.
More information here:
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