How many I2C devices can be connected to Raspberry Pi?

How many I2C devices can be connected to Raspberry Pi?

The other two serial interfaces are the Serial Peripheral Interface (SPI) and Inter-Integrated-Circuit bus (I2C). SPI on the Pi allows for up to two attached devices, while I2C potentially allows for many devices, as long as their addresses don’t conflict.

What is the maximum number of slaves that can be connected to a single master of i2c bus?

127 slaves
“You have a 7-bit address. That means you can address up to 127 slaves.” “The number of devices connected to the bus is only limited by the total allowed bus capacitance of 400 pF.”

What is the maximum number of slaves that can be connected to a single master of I2C bus?

Can you have multiple Imus on the I2C bus?

It seems that just having multiple IMUs on the I2C bus would work great, but they usually all come with the same address. So, the solutions I found so far: Using a multiplexer – requires star-like wiring topology.

How to connect multiple I2C sensors with the same address?

It can be installed via the Arduino Library Manager or directly from its GitHub repository here. With this, you can select arbitrary pairs of pins to act as SDA and SCL for each I2C device and then you can communicate with each device individually.

Are there any problems with an I2C device?

I2C devices can also be constructed with a single transistor per line, because the two lines are pulled up by an external resistor (or resistors). This sounds good, but can cause problems with high-speed signals and high-capacitance lines. So let’s get down to details. The problem with relying on pullup resistors is “parasitic capacitance”.

What should I do when debugging an I2C system?

The first thing to do when debugging an I2C system at the protocol level is to make sure that the slave device is there and listening. Since the slave is supposed to respond with an ACK after hearing its address on the data line, this can be used to scope it out.