Manual Volume Selection Zero Push Buttons Computer Arduino Manual Volume Selection X,Y,Z position control USB Motor System (5 motors) PipetteMan (Standard model, all sizes are compatible) Fluid extraction/release Tip Release

Electronics Preserve USB motor system Arduino (Mini Pro) More than enough inputs <$20 USB/Serial Connection 2 USB Ports Needed A usb splitter can be used/included

Zeroing XYZ Positioning, tip release Buttons indicate when position is reached Arduino informs computer Computer stops motors Repeat process for precision Fluid Extraction/Release bottom points User sets fluid amount on pipeteman Buttons control exact positioning User marks bottom, middle, and top points on computer Should be savable for quick reconfiguration Possible future option – Force Sensor

Position Control 3 motors Same system as current printer XYZ Axes Same system as current printer Software is largely transferrable Already tested to required accuracy for liquid transfer Existing FabInterpreter software

Fluid Extraction/Release PipeteMan pipette Actuation: Use motor from 3D printer 3 reference points Released Half-pressed Fully-pressed Tip Disposal Last motor Electrical contact on button gives position