🔁 SPI Communication Between ESP32-S3 and Arduino Uno (String Exchange) This project demonstrates full-duplex SPI communication between an ESP32-S3 (running Zephyr RTOS) and an Arduino Uno. The goal ...

Circuit Diagram to Build a Smart Toll System Using Arduino: Circuit Explanation 1. RFID Reader Connections: The RFID reader communicates with the Arduino via SPI protocol. The following connections ...

To prevent data corruption when using multiple SPI devices on the same bus, care must be taken to ensure that they are only accessed from within the main loop, or from the interrupt routine, never … ...