I built a human-sized robot that can follow anyone wearing an IR beacon.
It works quite well indoors and it's quite precise, but outdoors it is completely blind due to sunlight infrared.
I have a bunch of XBee I can try to use to triangulate someone wearing an XBee as a beacon but I was wondering: What's the best way to make a robot follow you pretty much in every environment if you aren't more than 10 meters from it?
Best Answer
Make your IR beacon transmit a square wave signal of a known frequency and make sure your receiver in the robot has a decent enough circuit to focus on the emitted IR known frequency.
If it turns out that your IR sensor is hitting the end stops in direct sunlight then change your sensor.