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| Pieced Together Mini Sumo Bot |
My first attempt at creating the IR emitter and sensor circuit failed miserably... mostly because I was trying to do too much at once. The other problem I think I am getting is the vast differences in the IR detectors I purchased from RadioShack. I have one of the Sharp distance measuring units I bought from Sparkfun (GP2Y0A21YK) a while ago... I should probably purchase another and leave the building my own module for the future.
I'm assuming that you are using the IR emitters and receivers to detect when your sumo bot approaches another robot. If you are still getting vast differences between the two sets of LEDs it may not necessarily be the sensors but the environment they are in. I am wondering if your one of the IR receivers is picking up IR light from another source such as sunlight from a nearby window? Sunlight contains lots of different kinds of light and you might be able to test this by running your robot in a room with minimal lighting and no windows.
ReplyDeleteGunther, I did actually turn off all the lights and close the shades to test that same theory. I was surprised to find how much it did vary the detector's outputs. For now I have abandoned making my own distance sensors and decided to stick to 'out-of-the-box' versions. I do intend to come back to this, probably when I give the nano sumo bot a try. Thanks for the interest. -Chris
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