Team

Elizabeth Held Undergraduate Student, Electrical & Computer Engineering

Maxwell Curtis Undergraduate Student, Mechanical Engineering

Kyle Price Undergraduate Student, Mechanical Engineering

Daniel Hannah Undergraduate Student, Electrical Engineering

Ricardo Reyes Undergraduate Student, Electrical Engineering

Project

Mircofab Lab: Spin Coater

An open source flat spin coater for use in the microfabrication lab, used to spin extremely thin layers onto wafers or other materials.

A commercial low-end spin coater would cost approximately $1300, this holder will cost approximately $6 to print, plus It takes about one day to print all the parts, using only one printer.

NIH Link - This page contains:

• STL and OpenSCAD files for each printable part
• Arduino motor controller code
• Motor controller wiring diagram/EAGLE schematic

Prototype

Bill Of Materials

• 1x 18000 rpm motor $12.88
• 1x L289N motor controller $6.99
• 1x 10kOhm potentiometer $7.91
• 1x Arduino mini microcontroller $6.51
• 1x 12V 2A power supply $7.99
• Approx. 1 kg of PLA filament per gram - $22.99
• 2x 1/4-20 x 2 1/2" Bolts $0.35 ea. - $0.70
• 2x 1/4-20 x 3" Bolts $0.40 ea. - $0.80
• 4x 1/4-20 Nuts $0.07 ea. - $0.28

Total Cost ~ $67.16 // Total Savings ~ $1232.84

Installation and Use

• Plug into wall outlet
• Adjust dial on front of the device to control speed of spinning plate.
• Ensure lid is secure on top of spinner before starting.

Gallery

• 
  Enclosure
• 
  Enclosure Lid
• 
  Motor Guide Plate
• 
  Mounting Plate
• 
  Motor Controller Wiring Diagram
• 
  Spin Coater Final Print