While this platform does not provide an automatic way to scroll the paper it is the first step in making a usable, continuously scrolling paper design in a laser cutter.
Designed and built by:
CU Boulder, Things That Think, Spring 2011
Step 1: Parts and Materials
To build some logic and control the behaviours, Arduino Uno was used. The Arduino Uno has built in support for two servos but more can be added if the servo inputs are spliced and placed into the correct pins on the Arduino board. A better description and documentation on the Arduino Uno can be found here http://arduino.cc/en/Main/arduinoBoardUno.
The laser cutter that we used for this project was the VersaLaser 1100 along with the drivers and software that come with the laser cutter. Adobe Illustrator was used to produce the template for the cutting surface. The laser cutter that you use to develop this prototype might differ and will affect the size of the platform, the template that you build to the cutting area, and many other considerations for the project.
Wood (Platform and Supports)
Our platform and supports are built out of wood but acrylic could be used too. The size of the platform is specific to the size of the laser cutter that we used. The supports are also sized according to the receipt paper that we used.
This is a simple receipt paper picked up from any home office supply company. If you want to use a different type of paper for the project make sure the supports for the platform are changed accordingly along with the servo dowel.
A properly sized dowel is required to be placed on the end of the servo to pull in the receipt paper.
This is basically a button that triggers the programmed movements. A touch sensor could also be used in place of a switch.
Resistor (10k Ohm )
Only one resistor is required for this project. This resistor is necessary to control the behaviour of the electric circuit. The exact placement for these resistors will be explained further in the Instructable.
360 Degree Servo
A continuously rotating servo is required in this project to roll up the receipt paper. The servo we used was purchased from Sparkfun and is available here. http://www.sparkfun.com/products/10189
Ladyada Motor Shield
Arduino on its own cannot power itself or the servos without a USB connection or A/C Adapter. To create a more portable automaton we built a Motor Shield as described in http://www.ladyada.net/make/mshield/make.html and we connected it to the Arduino. We then connected an independent power supply and the servos to the Motor Shield.
During the development phase, the power was supplied through a USB cable connected to a computer. In the production phase, we used a pack of 4 AA batteries.