Waveshare ESP32-S3 5inch Display Development Board w/ 800x480 LCD

The board is fully compatible with Espressif's official ESP-IDF framework, the Arduino Core for ESP32 via the Arduino IDE or PlatformIO, and MicroPython. You will need to install the appropriate display driver libraries (e.g., for the RGB interface) and configure the project for the specific PSRAM and flash size. The board's pinout definitions are provided in the Waveshare wiki, which includes example code for the LCD and isolated I/O.

Connect a 7–36V DC power source to the board's terminal block. The onboard regulator steps this down for the ESP32-S3 and peripherals. Operating current varies significantly with usage: with the display and Wi-Fi active, expect several hundred mA. For low-power scenarios, you can use software controls to put the ESP32-S3 into deep sleep, turn off the display backlight, and disable peripheral power domains, reducing current to microamps, ideal for battery-backed field deployments.

This specific variant is listed as 'without touch.' The display interface is RGB only. To add touch, you would need to interface an external resistive or capacitive touch controller via the available I2C or GPIO pins. Waveshare may offer a touch-capable version; check their product line. For this model, you can implement control via physical buttons connected to the isolated digital inputs or a separate touch panel overlay.

The CAN (Controller Area Network) and RS485 interfaces use standard terminal blocks. For CAN, connect CAN_H and CAN_L to your bus along with a 120-ohm termination resistor if needed. For RS485, connect A (positive) and B (negative) lines. You must initialize the corresponding UART peripherals in your firmware (e.g., using the ESP-IDF TWAI driver for CAN and UART with RE/DE control for RS485). The isolation protects the ESP32 from common-mode voltages on these industrial buses.