Published Paper Details:

This research introduces the design, development, and testing of an extensive touch event logging system on top of the ESP32 microcontroller platform. The system records capacitive touch events through a special sensor on GPIO 4, keeps track of persistent event count in non-volatile storage, presents real-time count data on an onboard OLED display, and at the same time writes timestamped event data to Google Sheets via a custom web service. The system meets the requirement of efficient event detection using debounce protection measures and supports high-grade network communication to guarantee data integrity. This work describes the hardware architecture, firmware design paradigms, cloud integration methodology, and real world applications of the developed system. Performance analysis shows that the system has accurate event counting and logging functions even under changing network conditions, with successful data synchronization to the cloud repository. The touch event logger is a general-purpose base for different Internet of Things (IoT) applications that need physical interaction tracking along with local visual feedback as well as remote data storage, for example, people counting, user interaction tracking, or mechanical movement tracking. In addition, this work investigates a possible application as an energy harvesting system based on rack and pinion motion conversion, as in speed breaker energy generation applications, validating the modularity of the ESP32 board for data logging as well as for renewable energy applications.