Quantity   Component name
1 × Teensy 3.x or other microcontroller Needs to be powerful enough to manipulate image data, drive print heads, and maintain position tracking state.
1 × Battery
1 × ADNS-9800 Laser Motion Sensor Optical mouse sensor breakout board from Jkicklighter on Tindie
1 × InkShield Inkjet print head kit by Nicolas Lewis
1 × 3D-printed casing