โมดูลขยายสัญญาณ I2C ใช้แก้ปัญหา address ซ้ำกัน TCA9548A 1 to 8 I2C 8-channel IIC (I2C) multi-channel expansion board ...
โมดูลขยายช่องการสื่อสารแบบ I2C สามารถเลือก Address ได้ 8 ค่า สามารถต่อทำงานพร้อมกันได้สูงสุด 64 ตัว
ตัวอย่างการใช้งาน TCS954A8A
ตัวอย่างการนำไปใช้งาน
https://dronebotworkshop.com/multiple-i2c-bus/
Feature:
You just found the perfect I2C sensor and you want to wire up two or three or more of them to your Arduino 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 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.
Color: Purple
Material: metal
Like all Adafruit breakouts 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.
Package Contents:
1 x IIC module development board
(4.85)
(4.58)