These sketches were written to "bit bang" iR signals. They were developed specifically for a Roku XD media streamer, which uses an NEC-like protocol with a 2-byte address followed by a 1-byte instruction and the 1-byte inverse of the instruction. See https://www.sbprojects.net/knowledge/ir/nec.php for more information on this and other common iR protocols.
There are four sketches:
roku_home_POC.ino -> Initial proof of concept which sends the equivalent of pressing "home" on the remote
roku_fuzz_address.ino -> Tries each possible address
roku_fuzz_instructions.ino -> Tries each possible instruction
roku_flood.ino -> Spams instructions as quickly as possible
These sketches were written for and tested on a 3.3v Pro Micro MCU
Twitter: @tdotfish
Github: https://github.com/tdotfish
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