Wall Printer

Parts

• Set of Liquid Chalk Markers: http://www.amazon.com/Liquid-Chalk-Works-Marker-Classic/dp/B00251G48E/
  • 15.5 mm diamater, ~130 mm long
• 2X Pololu Stepper Controller: http://www.pololu.com/catalog/product/1201
• 30' Timing Belt: http://www.mcmaster.com/#7959k24/=e053iq
• 2X Stepper Motors: KL17H247-168-4B http://www.kelinginc.net/KL17H247-168-4B.pdf

Black A+
Green A-
Red   B+
Blue  B-

• 2X Wall Printer Stepper Motor Mount
• 2X Wall Printer Timing Pulley

Pinout

2B – black
2A – brown
1A – blue
1B – red
MS1 – GND (via 100k resistor)
MS2 – VCC
MS3 – unconnected (means low, has internal pull down resistor)
RESET and SLEEP are connected

The connections from the Arduino are:

pin 6 – Debug LED
pin 8 – Servo signal
pin 9 – Driver 1, DIR
pin 10 – Driver 1, STEP
pin 11- Driver 2, DIR
pin 12 – Driver 2, STEP

References

• Der Kritzler: http://tinkerlog.com/2011/09/02/der-kritzler/
• Spray Paint Hektor: http://hektor.ch/
• Polar robot: http://www.polargraph.co.uk/whats-a-polargraph/

Scratch

• Stepper Motor Mount: http://www.thingiverse.com/thing:5166
• Another mount: http://www.thingiverse.com/thing:4639
• Another simple mount: http://www.thingiverse.com/thing:1181
• Generic Timing Pulley: http://www.thingiverse.com/thing:1362