Quote:
Originally Posted by Bharat Nain
The downside to this is your IR receiver will not receive accurate commands when the robot is very up close. I do not know how to put this in technical terms but that is what I get from the IR experts.
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In technical terms, you can overload (saturate) the receiver. Kind of like how your eyes are saturated when a flashlight is shined directly in to them, you can't see much of anything else.
Binome's comments are accurate; a digital logic circuit (not sure which TTL logic family) that has a high fan out drive capability will do the trick as well, with far greater simplicity.
Al Skierkiewicz, light does indeed interfere constructively and destructively, but in a practical sense several LEDs clustered closely will not exhibit this effect over a longer distance (several feet, think 'far field'), actually because the light beams are not all that uniform. Modulation doesn't change this much.
Don