As most of you already know, some Canon DSLR have a dedicated plug for the remote. This is pretty annoying, especially when we want to make a special diy shot controller. The easy way is to buy a cheap remote and cut the plug from it, and there is also the chance to find a remote which has a socket to connect a common 3.5mm audio jack to shot and focus contacts.
I'm sure to have one of them, but I'm not sure where it is ;-) so I decided to DIM (do it myself!) an N3 plug.
Step 1: The Reference
I'm lucky to already have a compatible shutter remote (which I use for timelapses), this is necessary because we need obviously a reference to model our plug, and we don't want to flow resin into the camera socket, do we?