I need ideas with Beacon Tracker robot

Its a part of our project for school, so far we are building the Obstacle avoiding robot. I dont have much problems with the obstacle avoiding part or the Microcontroller programming but the beacon tracker has me stumped. Im totally clueless with the transmitter/Receiver parts.

The design needs to be able to track the beacon/transmitter within a 5meter range minimum and be able to go towards it.

Ordinary IR wont work so we're considering long range but the professor remarked that it gets a lot of interference once out in the sun.
Sound based was suggested but there will be a lot of interference
RF was also suggested and by far its getting me confused.

Any info/opinion regarding the matter will be much appreciated

IR and ultrasonics will get some interference, yeah - but I would still say they are your best bet. Ultrasonics with some discrimination based on pulse train widths, modulated IR with a sun shield, something along these lines.

I thought the sun shield was some sort of lens, but it turns out it was some sort of cover.
Thanks for the tip.

Pololu is your answer

You may want to check the ir beacons at Pololu:

Pololu - Pololu IR Beacon Transceiver

Have you considered polorization filters on the beacon and robot?

elcerdomarrano said:

You may want to check the ir beacons at Pololu:

Pololu - Pololu IR Beacon Transceiver

Click to expand...

It may take some time If I ordered, I might just build a similar one thanks for the info.

AllVol said:

Have you considered polorization filters on the beacon and robot?

Click to expand...

Just now yes, but I am absolutely clueless as to where I could buy one here in the Philippines, Ive been told I can buy them from camera shops. I haven't gone there yet though