I was also reverse-engineering infrared protocols in the beginning of 2014, and as a result, I wrote an Arduino library for sending air conditioner / heatpump IR codes.
See: https://github.com/ToniA/arduino-heatpumpir and https://github.com/mysensors/Arduino/tr ... Controller
List of supported models includes:
- Panasonic E9/E12-CKP (Panasonic remote control P/N A75C2295)
- Panasonic E9/E12-DKE (Panasonic remote control P/N A75C2616)
- Panasonic E9/E12-JKE and E9/E12-NKE
- Midea MSR1-12HRN1-QC2 + MOA1-12HN1-QC2, sold as Ultimate Pro Plus Basic 13FP in Finland (Midea remote control P/N RG51M1/E)
- Carrier 42NQV035G / 38NYV035H2 (Carrier remote control P/N WH-L05SE)
- Fujitsu Nocria AWYZ14 (remote control P/N AR-PZ2)
- Mitsubishi MSZ FD-25, probably also FD-35 (remote control P/N KM09D 0052376)
- Hisense AUD (remote control Y-H1-01, Y-H1-02(E), Y-J1, Y-E4-07) probably AUC model