[Hack] Connect and Control Fuji Instax to Arduino
This post is about how to Connect and control your Fuji Instax to your Arduino or microcontroller. The Fuji Instax models this should work with are the Fuji Instax (Wide) 100, 200, 210. I used this setup in a “polaroids from space project”, google this website for the corresponding project page. I found that Fuji Instax film is highly reliable and developed fairly well in the stratosphere even at zero pressure and sub zero temperature. In all ways except the cultural, Fuji instax film is superior to that of Polaroid (especially the new impossible film, which in my opinion looks cool but it’s still in development).
Anyhow, here we go. Because, yes it is possible, and yes it’s kinda easy.
How to hook it up to your Arduino/microcontroller
Generally there are three ways:
1) Relay, super simple but asks a lot of power and do not often work with 3.3v if you happen to use that
2) opto-coupler, super easy but polarity is important
3) Transistor, a bit more difficult. this is what i used and i got good results although you have to tune your resistor values a bit, I ended up using 10k Ohm with a simple npn transistor i had in a drawer somewhere.
When you break the thing open, you can generally do three things that are important:
1) Take a picture
2) change focus (from close to tele)
3) turn the thing on/off
What you want to attempt to do, it follow the leads comming from the “button” back-side, and try to control them with either your relay, opto-coupler or transistor. See below image for that flat connector ribbon.
Then you can either follow the leads or connect/solder it as follows:
Then if you connect the ground to either the 1st, 2nd or 3rd connector, you can focus it, turn it on/off, or take an image.