This project builds a secure payment web portal using an ESP32 microcontroller as the backend server. The portal provides a user-friendly interface for processing transactions, managing payment data, and handling customer interactions through a web browser.
The guide includes a complete wiring diagram for connecting peripherals like buttons and status indicators, a full parts list, Arduino firmware with web server implementation, and step-by-step assembly instructions. Builders will learn how to set up secure HTTP communication, handle form submissions, and integrate payment processing logic on a microcontroller platform.
Wiring diagram
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