Use this with an Excel spreadsheet of NEC-1 codes (typically created by the vendor), and call the function to generate the Pronto string in another cell. Then copy the string to your RC program.
This module contains functions to generate the long and short form of Pronto Hex strings. It is designed for Yamaha, but can be modified for other manufactures if you know the correct lead-in and lead-out strings (I don't). The strings should work with any RC that uses Pronto hex strings.
Open the instructions with a text editor to read the instructions for installation and usage.