HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino

HiLetgo PCA9548A TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino

Interface: I2C IIC Chip: PCA548A/TCA9548A Selectable I2C address: 0x70-0x77 Working Voltage: 1.65-5.5V Max Clock Frequency: 400KHz Description:

You just found the perfect I2C sensor, and you want to wire up two or three or more of them to your when you realize "Uh oh, this chip has a fixed I2C address, and from what I know about I2C, you cannot have two devices with the same address on the same SDA/SCL pins!" Are you out of luck? You would be, if you didn't have this ultra-cool CJMCU-9548 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 the commands to the selected set of I2C pins with your command.

Using it is fairly straight-forward: the multiplexer itself is on I2C address 0x70 (but can be adjusted 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 8 of these multiplexers on each of 0x70-0x77 addresses in order to control 64 of the same-I2C-addressed-part.

We put this nice chip on a breakout for you so you can use it on a breadboard with capacitors, and pullups and pulldowns to make usage a snap. 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.

Packaged included:
1* PCA9548A/TCA9548A I2C Multiplexer Breakout board