Electronic Cable Release for a Nikon Camera
This client took excellent photographs from his powered wheelchair. He could line up the camera before the shot, but a helper had to press the shutter-release button on his behalf because his fine motor control was not sufficiently good. He requested a large shutter-release button to connect to his Nikon camera.
The camera has a socket which is designed for the purpose, and a cheap (around £5) electronic button was purchased from eBay. This was opened, remodelled and fitted in a new, large enclosure. A large button was manufactured to operate the original contacts.
Once connected to his camera, the large button operated the shutter and he could now frame and take his own images.