7 I2C On Vendor Buses
This chapter describes three popular vendor buses that support I2C signals: the Adafruit Feather bus, the SparkFun Qwiic bus (which Adafruit calls Stemma QT), and the Seeed Studio Grove bus. Hundreds of peripheral devices can connect to these buses, so it’s essential to familiarize yourself with them if you want to use a large number of existing peripheral devices in your systems. You’re also likely to encounter these buses in existing systems.
To connect a pair of I2C devices, you need only three wires: SCL, SDA, and Gnd. Outfits like Adafruit, Seeed Studio, and SparkFun sell a wide variety of I2C breakout boards that ...
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