The goal of our project was to create a machine that produces business cards.
We decided to hack a polaroid exploiting the internal mechanism to create our personal business card that bear the logo of the Fab Lab Turin.
We replace the shutter with an RGB LED and, applying a diffuser, it generates a random color that imprints on a polaroid paper an image generated by a stencil placed over it.
Everything is managed by a program loaded on a Arduino connected with both the motor of the machine and the RGB LED.
Please note: to build this project you need an average skill in electronics and in programming.
Step 1: Sketch
Step 2: Unmount and Studing the Hardware
After opening the machine, we have identified the components useful for our project and eliminated unnecessary ones to optimize the space available.
- RGB LED
- A power switch
- A button
Step 3: Electronics
- The button to start the machine process
- A switch that indicates when the self-starter has completed the process of printing
- RGB LED (Red, Green, Blue channels)
- Self-starter motor
We noticed that, upon completion of a rotation of the engine, a small metal plate is raised.
We placed a button on the small metal plate which will then be read by Arduino like a button.
Step 4: Wiring the Arduino
In this phase, we connected the following components to Arduino:
- The engine of Polaroid, connected by a Mosfet
- The switch adapted on the small strip of metal that rises to the completion of the rotation
- 3 channel of the RGB LED each connected to the NPN transistors
- The start button
- A switch of ignition
Now you can program the Arduino.
Step 5: Make the Stancil
After having designed on a drawing digital software we cut the stencil on a plastic plate (1mm) using a laser cutter.
Step 6: Assembling and Loading
The stacil obtained was placed over the container of polaroid's cartridge which is loaded into the machine.
Step 7: Results and Final Thoughts
After about 40 minutes the polaroid is fully developed.