Milk Frother

Design Philosophy

What is it?

This PCB is a rechargeable motorized milk frother which allows the user to adjust the output voltage to its motor via a potentiometer and displays the output voltage to a seven-segment display.

Schematic

Footprint

Programming the 7-Segment Display

The Functioning Electronics

The Case (3D Printer Model)

The Final Result

With Cardboard Shell

With 3D Printed Shell

Things I Learned

• How to design a PCB using KiCad

  1. Creating Symbols and Footprints

  2. Designing Schematics

  3. Configuring Layouts

• Selecting and purchasing electrical components

  1. Reading and understanding data sheets

  2. Using Digikey symbol libraries

• How PCBs are manufactured

  1. Overview of PCB manufacturing process

  2. Setting PCB footprint requirements to adhere to fabrication company's specifications

  3. Exporting Gerber files and sending them to fabrication company

• Assembling PCBs

  1. Soldering

  2. Programming Microcontroller using Arduino IDE

• PCB Debugging

  1. Probing with multimeter

  2. Soldering components that don't fit their footprint

• 3D Printing

  1. Creating a 3D model using Autodesk Fusion 360

  2. Exporting and slicing STL files for 3D printer

Conclusion

This project and DeCal were a fantastic experience where I got to learn lots of exciting new skills that I can use in the future. Thank you to the sponsors of this DeCal!