Capacitive Sensing 101

This document provides an overview of capacitive sensing technology, highlighting its increasing popularity as a human-device interface in various consumer products and the advantages of using programmable systems like Cypress Semiconductor's PSoC. It covers the fundamentals of electric fields, capacitance measurement methods, and design considerations for capacitive sensors, including the importance of PCB design and adjusting to environmental factors. Additionally, it emphasizes the need for carefully defined thresholds for reliable interaction and offers guidance on troubleshooting and ensuring optimal performance.