SLAA891B April   2019  – February 2020 MSP430FR2512 , MSP430FR2512 , MSP430FR2522 , MSP430FR2522 , MSP430FR2532 , MSP430FR2532 , MSP430FR2533 , MSP430FR2533 , MSP430FR2632 , MSP430FR2632 , MSP430FR2633 , MSP430FR2633 , MSP430FR2672 , MSP430FR2672 , MSP430FR2673 , MSP430FR2673 , MSP430FR2675 , MSP430FR2675 , MSP430FR2676 , MSP430FR2676

 

  1.   Automating Capacitive Touch Sensor PCB Design Using OpenSCAD Scripts
    1.     Trademarks
    2. 1 Introduction
    3. 2 Getting Started
      1. 2.1 Prerequisites
      2. 2.2 Workflow
      3. 2.3 Creating a Sensor
      4. 2.4 Output DXF
      5. 2.5 Batch Files
    4. 3 Slider
    5. 4 Wheel
    6. 5 Curved Slider
    7. 6 Touchpad
    8. 7 PCB CAD Tool
    9. 8 Summary
  2.   Revision History

8 Summary

The barrier to designing complex capacitive touch sliders and wheels has now been eliminated. Creating scalable capacitive touch slider, wheel, and touchpad PCB sensors can now be quick and simple using OpenSCAD and custom scripts provided by Texas Instruments. This document demonstrated the three steps required to create a wheel sensor on a PCB and describes the anatomy of these sensor types. For your next capacitive touch design, consider using one of these sensor types and leveraging the power of these scripts.