Arduino As A Remote Shutter Release For RICOH Cameras

Davide GombaJanuary 4th, 2011

Yet another arduino-based camera trigger, posted from [tObY!].

Some time ago I bought a RICOH GR III camera. Since I didn’t want to pay the amount for the CA-1 remote, I did a little research how this thing works. Soon I came up with Muttyan’s home page. This gives a detailed description of the CA-1’s internals and how it works. Good job, there you’ll find everything you need!

Basically a button half press, a full press and a release are signaled with three different patterns to the camera via its USB connection. No “real” USB protocol is used, just pulsing the USB +5V supply line. Emulating these pulses is an easy job with an Arduino board, so I did a quick proof of concept.

via [infar.be], electronics know-how of RICOH cameras [Mattyan]

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