How to switch an Olympus Audio Recorder on (and maybe off) with a cable remote control?
I am using the Olympus LS-3/LS-7 audiorecorder. Its remote control port is a 2.5-mm-jack-plug, like most Olympus audiorecorders.
Olympus sells an infrared-remote-control, called "RS30W", that is large, expensive and requires line-of-sight. You can see in the image, that the jack-plug has 4 contacts.
I would like to have a cable remote control, that needs no line of sight. A perfect solution would have a switch with two positions: recording and not-recording. So that I can see and feel if the device is recording.
I have not found a documentation of the pinout of the cable. Canon uses a similar cable-remote-control for their cameras, with a 2.5-mm-jack-plug, but with only three contacts. Depending on the position of the switch, different contacts are shortcut. I feel that a similar solution should be possible for Olympus if the "protocol" is simple enough.