Just in this project the IR pin defined to IO=15. Checked on two different modules and it is the same. I would like to temporarily, before the ordered RC-406 arrives, configure myself some remote control for educational purposes. I've run some clones based on Yoradio and there I've configured myself 2 remotes in NEC code, which work quite well. The problem is that the codes read by the Yoradio configurator or the remote control tester I have are different from the NEC standard in the project from this thread. There are differences between Yoradio as well as the tester, so I won't use one or the other.