Print-A-Sketch

This is an Arduino library for Print-A-Sketch, an open-source handheld printer prototype for sketching circuits and sensors. For more information on the project, visit our website.

Hardware

• 1x Xaar 128/80 W printhead
• 1x FFC to DIP adapter

Power Circuit:

• 1x 3.7V Li-Ion rechargable battery
• 1x DC-DC Switching Boost Converter (>35V)
• 2x 1K resistor
• 2x 200 resistor
• 2x 1uF capacitor 50V
• 1x 220uF capacitor 50V
• 2x 1N4004 diode
• 2x 1N4740 diode
• 2x IRF9540 transistor
• 2x BC547 transistor

Positioning:

• 1x Optical Flow Sensor PMW3360

Interaction with the device:

• 1x Monochrome 0.96" 128x64 OLED Graphic Display
• 2x Push Button

The code can be modified for interacting with the device without the display interface.

Documentation

• print_line() - is used for printing lines of indefinite length with chosen width
• print_image() - is used for printing an image which is a hardcoded bitmap in pixel_data.h

Xaar 128 Guide to Operation - Unoffical