The LEDs are luminous landmarks used as beacon for locating the robot by triangularisation.
A single luminous landmark is made from:
- 4 RGB LEDs.
- Plastic support taken from a commercial solar beacons kit.
- An interruptor.
- A metal square support.
- An Arduino pro mini.
- A battery support.
Here is how the different elements are linked:
To build the support:
- Open the commercial beacon:
- Remove the useless part:
- Glue it with the metal support:
- Glue the battery support and the interruptor:
The circuit is inside the plastic beacon part.
The arduino card is flashed with the code from leds.ino.
This code lights up the leds with a random color.
The colors available are:
- red
- green
- blue
- yellow
- purple
- orange
- white
Depending on the quality of the leds the RGB values for these colors have to be adjusted.