{"title":"Gravity: IIC to Dual UART Module","handle":"gravity-iic-to-dual-uart-module","url":"/products/gravity-iic-to-dual-uart-module","description":"The Gravity IIC to Dual UART Module converts a single I2C connection into two independent hardware serial ports. Each sub-UART has its own 256-byte FIFO buffer for transmitting and receiving, with individually configurable baud rate, word length, and parity settings.\n\nMost controller boards like Arduino, Raspberry Pi, and micro:bit only have one or two UARTs — and one is often reserved for programming or debugging. This module solves the problem by adding two extra serial ports via I2C. Up to four modules can be daisy-chained on a single I2C bus to provide eight additional hardware serial ports.\n\nKey Features\n\n\nI2C to Dual UART – Expands one I2C port into two independent serial ports\n\nUp to 2 Mbps – High-speed communication on each sub-UART\n\n256-Byte FIFO Buffer – Independent transmit and receive buffers per channel\n\nIndependent Configuration – Each sub-UART has its own baud rate, word length, and parity settings\n\nDaisy-Chainable – Connect up to four modules for eight serial ports total\n\nGravity Interface – 4-pin I2C connector for plug-and-play connection\n\n\nSpecifications\n\n\nOperating Voltage – 3.3V to 5.5V\n\nOperating Current – Less than 3 mA\n\nInterface – Gravity I2C 4-pin\n\nExpanded UARTs – 2\n\nOperating Temperature – -40°C to +85°C\n\nDimensions – 32.5 × 27 mm\n\n\nIdeal For\n\nIoT projects requiring multiple serial devices\nGPS and ultrasonic ranging modules\nSpeech synthesis and wireless communication modules\nProjects with strict timing requirements (IR receivers, addressable LEDs)\n\n\nPackage Contents\n\n1× Gravity IIC to Dual UART Module\n\n\nResources\n\nWiki documentation\n","vendor":"DFRobot","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":14415,"title":"Default Title","sku":"DF-DFR0627","price":13.57,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":243,"option1":"Default Title"}]}