Irrigation Controller

This schematic diagram shows the hardware structure of an intelligent irrigation controller, which takes GD32E518 or GD32F527 as the main control MCU. On the left, UART connects an IR transceiver, I2C links the RTC module, SPI is interfaced with a crypto chip, and a CAN transceiver communicates with CAN/485 field bus. On the right, three UART ports drive GPS module, 2G/4G cellular module and GD32VW553-MINI Wi-Fi & BLE combo module respectively. The I2S channel connects an audio codec, while SPI is used for SPI Nor Flash local storage. Integrating IR interaction, bus data collection, multi-mode wireless transmission, positioning, audio prompt and encrypted storage, this solution is well-suited for agricultural automatic irrigation control terminals.