On 27 February 2015, a small group of EDGErs went to LEGOLAND for an EV3 Hackathon. This post documents one of the projects that came out of the event.
At the EV3 Hackathon, I was given the task of building a set of traffic lights to use on our Urban Network. It should have been relatively straight forward, right? However, limited LEGO bricks and options with the EV3 Education set made the task of fitting older generation lamps and their wires quite challenging.
The problem came down to the simple fact that EV3 Education set (45544) does not come with any flat or regular “studded” LEGO bricks. Older generation sets came with such pieces, making it possible to easily attach to the square-shaped RCX/NXT lamp wire module (Converter Cable for Mindstorms NXT) .
One solution came down to simple bracing, front and back. Care was taken not to piggy back the wire-modules since the base and the top of each lamp had conductive points. Instead, lamp modules were fitted side-by-side. The following pictures show how the modules were packed together and braced on each side.
The tops of each light assembly fitted into the round recesses of the side beam, and the brace behind the assembly kept the vertical beams together.
The video below shows the traffic light working with a motion sensor.
EDGE Hackathon 2015
- Boom-gate intersection (EV3 Hackathon 2015)
- Building with RCX/NXT lamps and EV3 pieces
- Programming Bluetooth on EV3