can i connect two i2c devices to arduino? because there is only one SCL PIN & SDA PIN.
i want to connect 9dof sensor stick:SparkFun 9 Degrees of Freedom - Sensor Stick - SEN-10724 - SparkFun Electronics
and bmp180:https://www.sparkfun.com/products/11824.
how can i do it??
I2C is a bus arrangement, and devices have addresses. So as long as the addresses are different you're good to go.
ok thanks!
Btw, read about i2c scanner in the playground- it will tell you the address of each i2c device it sees.
Each device's datasheet should tell you the device i2c address, and how to set it (if it can be set).
Bus wiring would look like attached, other wires like 5V etc omitted. , power and ground shown but there may be other lines like address, reset and so on.
Don't forget to connect GNDs.
CrossRoads:
Don't forget to connect GNDs.
Pic changed.
And 4.7K pullups to +5V if using 5V powered devices.
