i is the simplest but not the only way to enter insert mode. o/O for new lines, c/R to replace text. An 'i-esc' foot pedal doesn't grok vi
https://stackoverflow.com/questions/1218390/what-is-your-mos...
https://stackoverflow.com/questions/1218390/what-is-your-mos...
The trick I've found (I don't remember where) and used ever since is to map the "kj" sequence to <Esc>, since it's otherwise unlikely in normal text. It's just a simple instruction in the vim config:
:imap kj <Esc>
That foot pedal is a cute project though.