camera timer controler

I semi need a timer remote, but woundn't use one enough to justify puchasing one. all my EOS cameras lack a abilty to take a picture longer than 30 seconds without human manualy doing it


User Interface:
the UI will consist of a Basic 16x2 Character LCD - White on Black 5V
this wil be the first time using this, it takes up 11 of the pins on the arduino. It is able to display characters and numbers, and will allow the viewer to understand whats going on. this will be my main focus on the project due to the learning required and the excess of code to run it.
buttons will consist of a raise and decrease time. maybe a lcd backlight on of trigger and a on off switch. 
likely it will mount onto the hotshoe of the camera


Simple 5 volt spst DIL Reed Relay to trigger the shutter mechanisim linked to a sterio male cable (with af pin unutilised do to it being unessary). plugged onto my female sterio 3.5mm jack -> canon N3 connector


milestones.

/1/     "hello world" acheived with arduino intefacing the screen.
/2/     work out how to update the screen within the program.
/3/     working breadboard build of design.
/4/     function complete version of program
/5/     build contained unit.