Hello,
Here is a sketch and some photos of how I made a modified cable to allow the Canon TC-80N3 Remote Interval Timer to be used on my Pentax *istDS.
This worked for me, but the notes are simply a record of what I wrote down as I tested various connections, etc. The notes and photos are not approved nor are they authoritative advice. If you choose to follow these steps, you do so entirely at your own risk, as all unapproved modifications to equipment may lead to damage.
As at the date and time of this post, I have only tested that the camera auto focus, metering and shutter trip work when the TC-80N3 and modified cable/connector is used with my Pentax *istDS. I have yet to test all the other features of the TC-80N3 such as interval shooting, etc.
Note:
The colours of the wires may change from cable to cable, so you need to verify the wire colour / pin connections for your 8 Pin minDIN cable.
Cheers
Dennis
PS - Thank you to
David Ratledge from the UK who inspired me, although I didn't go as far as he did by snipping the TC-80N3 cord and hard wiring a 2.5mm Stereo Plug (http link broken to his webpage as at 13th Jan 2007)