You are connecting multiple sensors to the same PCA9548A/TCA9548A channel and that will not work. You have to connect just 1 sensors by channel like this picture:
![[Image: 5626-06.jpg]](https://cdn-shop.adafruit.com/970x728/5626-06.jpg)
You can connect sensors in line only when they are connected directly to the I2C bus and you identify them by address but using the multiplexer the address will always be the multiplexer address (0x70) and you identify each sensor by channel.
More about you schema:
- Using LTC4311 terminators is a good idea when using long I2C cables.
- I may be wrong but the ISO154 isolator needs to be powered from both sides and you are only powering it from the Raspberry. If I am not wrong again the INA219 does not provide power to the I2C bus:
EDIT: sorry, I see that you are already powering the isolator by (vessel to 5v PS). Unless you have many sensors, I think you can power them from the Raspberry and you can omit the isolators
You can connect sensors in line only when they are connected directly to the I2C bus and you identify them by address but using the multiplexer the address will always be the multiplexer address (0x70) and you identify each sensor by channel.
More about you schema:
- Using LTC4311 terminators is a good idea when using long I2C cables.
- I may be wrong but the ISO154 isolator needs to be powered from both sides and you are only powering it from the Raspberry. If I am not wrong again the INA219 does not provide power to the I2C bus:
EDIT: sorry, I see that you are already powering the isolator by (vessel to 5v PS). Unless you have many sensors, I think you can power them from the Raspberry and you can omit the isolators