Hi Sebastian,
Bit of a learning curve but spent the day looking into how to get the Canon 5DMkII and 7D MkII to work.
With an infrared detector and an Arduino sketch I found that the RC-6 remote from Canon outputs a 500uS burst, a delay of 6940us and then another 500uS burst. I then used a IR Led at 940nm – modified a sketch to send these bursts and lo and behold – it works.
The RC-6 is used for a number of Canon Dslr’s so should cover a few more models for your library.
Best regards
Charles
