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Notify me when its in stockIf you want to connect two, three, or more devices to your Arduino, especially if they share the same SDA/SCL pins and have the same address, you should consider getting the ultra-cool TCA9548A 1-to-8 I2C multiplexer.
Finally, a way to get up to 8 same-address I2C devices hooked up to one microcontroller - this multiplexer acts as a gatekeeper, shuttling commands from your microcontroller to the selected I2C device with a simple I2C command.
Using this is fairly straightforward: the multiplexer itself has the I2C address of 0x70 (but can be set from 0x70 to 0x77) and you simply write a single byte with the desired multiplexed output number to that port, and bam - any future I2C packets will get sent to that port. In theory, you could have 64 of these multiplexers on a single I2C bus, for a total of 512 I2C outputs - that's a lot of I2C devices!
As all Adafruit breakouts, we put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pull-up/down resistors on the I2C pins. Some header is required and once soldered in you can plug it into a solderless-breadboard. The chip itself is 3V and 5V compliant so you can use it with any logic level.
You can order the TCA9548A I2C Multiplexer product from the Adafruit category at SAMM Market with competitive prices, same-day shipping, and fast delivery advantage
