Make a remote controlled camera from a cellphone!

Step 2 Making it

The idea is to replace your fingers with the relays and your brain with a microcontroller. Depending on how complex your phone is, i.e. number of different keys to press in order to send a picture, choose your microcontroller accordingly.

My setup uses four outputs (four different keys on the phone) and one input on the microcontroller. It allows me to send a SMS text message (or call) to my hacked phone and it then cycles through the code, clicking its way through the menus, taking photos and returning them to me.

I was optimistic about the joystick and quickly soldered up the wires. The joystick has up, down, left, right and center as possible connections. I had to crack open another joystick to figure out the connections. "Making a "right" or "left" requires many different pins to be connected in a certain manner and order, e.g;

""Right;""
First; yellow + black + blue + brown
then; purple + orange

I experimented and found that I could rationalize by always keeping some wires connected. This worked but made the joystick on the phone immobilized. For "Right" I ended up using two relays:

on relay 2
on relay 1
pause
off relay 1
off relay 2
Relay no.1 is the top left button on the key pad ("Select" and "capture"). Relay no.3 is the top right button on the key pad ( "more" and "send").