LORDWORLD Serial Expansion HAT SC16IS752 2-ch UART 8 GPIO Stackable 16 Modules 32-ch UART

Raspberry Pi 40-pin UART expansion

This HAT adds two UART channels and eight programmable GPIO lines to any Raspberry Pi board with a 40-pin header. The SC16IS752 bridge communicates over I2C, so no additional GPIO pins are consumed. It targets makers and engineers who need more serial ports for sensors, modems or industrial equipment.

Stackable design for multi-port systems

Up to 16 modules can be stacked by configuring the address jumpers, providing a maximum of 32 UART channels from a single Pi. Reserved I2C control pins remain accessible, allowing the stack to coexist with other I2C peripherals. Builders who need more than 32 channels or a different serial protocol will need another solution.

Low-power I2C operation with status LEDs

The board draws power from the Pi’s 40-pin header and operates at the host’s logic level, adding minimal load to the supply. Onboard LEDs show transmit and receive activity on each UART channel for quick debugging. No active cooling is required and acoustic noise is absent.