Having desired a very flexible and reliable IR receiver and transmitter pair for my home theater, which centers on KODI, I found several unsatisfactory offerings. So I built one now in it's 3rd generation and with much simpler HW then previous. The HW consists of a Teensy 3.2 and a TSOP4838 IR receiver (3 for $10 - Amazon). The remote I chose was the Inteset ($26 - Amazon) because of its 48 programmable buttons times four modes and it's programming capabilities which includes multi-button macros. I would be happy to post the code if anyone is interested.