{"title":"SparkFun Qwiic GPIO","handle":"sparkfun-qwiic-gpio","url":"/products/sparkfun-qwiic-gpio","description":"The SparkFun Qwiic GPIO adds eight additional digital I/O pins to your project via I2C, based on the TCA9534 I/O Expander from Texas Instruments. Read and write pins just like standard Arduino digital pins using the included library — functions mirror familiar pinMode and digitalWrite calls.\n\nAll eight pins are broken out to latch terminals for tool-free wire connections. With three configurable address jumpers, you can connect up to eight Qwiic GPIO boards on a single I2C bus for up to 64 additional GPIO pins. Default I2C address is 0x27.\n\nKey Features\n\n\nI/O Expander – TCA9534 with 8 digital GPIO pins\n\nInterface – I2C via Qwiic connector (1mm 4-pin JST)\n\nDefault Address – 0x27 (configurable via 3 jumpers, up to 8 boards)\n\nTerminals – Latch-style terminals for tool-free wiring\n\nArduino Library – Familiar pinMode/digitalWrite-style functions\n\n\nIdeal For\n\nExpanding GPIO on pin-limited microcontrollers\nQwiic ecosystem I2C projects\nMulti-board configurations needing up to 64 extra pins\nRapid prototyping with tool-free connections\n\n\nPackage Contents\n\n1× SparkFun Qwiic GPIO Board\n\n\nResources\n\nHookup Guide\n","vendor":"SparkFun","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":3747,"title":"Default Title","sku":"SF-DEV-17047","price":13.25,"on_sale":false,"in_stock":true,"available_quantity":37,"option1":"Default Title"}]}