Hi Josh, Was not aware of remotes that had multiple LEDs. Considering the low=20 data-rate I don't expect issues, but perhaps there's something I'm not=20 thinking of here. The emitters have a 90-deg angle, and the IR receivers also have a=20 specific receive angle (also 90 deg). Splitting the emitters apart will=20 keep the receiver's angle lower, and is not really much more work to do. But I'm also considering multiple emitters all together, but raised=20 higher to reduce the angle to the cars. This blog has more info on the whole setup... https://teejaydubblog.wordpress.com/ Cheers, -Neil. On 10/17/2016 2:47 PM, Josh Koffman wrote: > 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 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .