I have a single , cheap, infra red Tx on one Uno. About 10 feet away is a single cheap infra red Rx on a different Uno. The infra red messages are sent no problem, it works well. Are there any commercial, drop in, IR Tx arrays out there (I have looked but can't find any) so that I can send IR messages at greater distances? In other words: the signal from the Tx Uno will go this this (hypothetical) Tx array with it's own power source. Thank you in advance.
Those cheap transmitter modules without transistor circuit are quite ridiculous .
Try with this:
Or build your transmitter
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