Connecting multiple SDA SCL Devices

[Reasonable]

Hi,

Is there such a thing (board/controller) that would allow connecting multiple sda / scl devices to raspberry pi?

thanks!

[mikronauts]

I2C (which is the SDA & SCL signals, plus ground) is a multi-chip bus

You have to:

- watch the total length of the cable
- watch the voltage of the chips

Google "how to use i2c"

There are other limits - for example, some I2C devices only have one possible address, so you cannot have more than one per bus. Others let you select from a number of addresses (2/4/8 usually).

For the devices that only have a single address, you can use an I2C multiplexer, which acts like a switch, selecting between 4 to 8 sub-busses, which can have independent voltages. You can use these multiplexers to connect I2C devices which only have one address.

Hi,

Is there such a thing (board/controller) that would allow connecting multiple sda / scl devices to raspberry pi?

thanks!

[ric96]

Hi,

Is there such a thing (board/controller) that would allow connecting multiple sda / scl devices to raspberry pi?

thanks!

Also watch the voltage, some run at 5v but the pi can only handle 3.3v. you will need voltage level converters.

[hampi]

Here is an example what I have done for slow I2C

https://github.com/oh7bf/RPiAOneI2cSens ... ensors.pdf