{"title":"SparkFun QwiicBus - MidPoint","handle":"sparkfun-qwiicbus-midpoint","url":"/products/sparkfun-qwiicbus-midpoint","description":"The SparkFun QwiicBus MidPoint extends the range of your I2C bus using differential signaling over standard Ethernet cables. Based on the NXP PCA9615 IC, it converts I2C signals (SCL and SDA) into four differential signals, enabling reliable communication over distances up to 100 feet (30 m) while maintaining signal integrity.\n\nThe MidPoint connects between QwiicBus EndPoints via RJ-45 connectors and provides two Qwiic connectors for tapping into the I2C bus at any point along the chain. An onboard LMR33630 buck regulator can source up to 3A at 3.3V for higher-power devices.\n\nKey Features\n\n\nPCA9615 Differential I2C Buffer – Extends I2C up to 100 ft over Ethernet cables\n\n2× RJ-45 Connectors – Standard Ethernet cable connections for differential signaling\n\n2× Qwiic Connectors – Tap into the I2C bus with Qwiic-compatible devices\n\nLMR33630 Buck Regulator – Up to 3A at 3.3V for powering attached devices\n\nNo Protocol Conversion – Maintains native I2C protocol (no packetising into RS-485 or 1-Wire)\n\nBreadboard-Compatible – 0.1\" header pins broken out\n\n\nSpecifications\n\n\nI2C Supply Voltage – 2.3–5.5V\n\nDifferential Supply Voltage – 3–5.5V\n\nBuck Regulator Input – 3.6–36V\n\n\nIdeal For\n\nLong-range I2C sensor networks\nDistributed sensor installations over Ethernet cabling\nIndustrial and building automation with I2C devices\n\n\nResources\n\nQwiicBus Hookup Guide\nSchematic (PDF)\nEagle Files\nPCA9615 Datasheet (PDF)\nLMR33630 Datasheet (PDF)\nHardware GitHub Repository\n","vendor":"SparkFun","product_type":"physical","in_stock":false,"options":[],"variants":[{"id":3105,"title":"Default Title","sku":"SF-COM-18000","price":63.83,"on_sale":false,"in_stock":false,"available_quantity":0,"option1":"Default Title"}]}