On Mon, Oct 17, 2016 at 1:58 PM, Neil wrote: > IR comms works fine up to about a 30+ deg angle, so I'm considering 2 > emitters transmitting exactly the same thing at the same time. Would I > have any issues with this? And anyone have experience on if it would be > better to have both emitters at the same point, pointed about 20-30 deg > apart, or should I space the sensors a couple feet apart, so each one > covers half the field. Hi Neil, There definitely used to be TV/VCR remotes with multiple IR LEDs in them. Given the speed of light I'm not sure you'd have phasing issues if the sources weren't close together, but if you can get the coverage you need with a small array all in one location, won't that make building it easier too? Josh --=20 A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. -Douglas Adams --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .