Duplicate sda and scl pins

Using Arduino Programming Questions
1

Hi guys,

I want to use sd card module and barometer sensor, but they both are using sda and scl pins. Does any body know how can I solve this problem. At least can I change borometer's sda and scl pins programmatically.

2

I am using Arduino Mega 2560, Barometre (BMP180)

3

They would typically have different I2C addresses.
Connect in parallel.
If they have the SAME I2C address, then you need a multiplexer.

Looks like out of stock at the moment, can ask site owner Wayne when he'll have more

Or buy a chip and wire up your own

4

SD card modules typically use SPI (d10-11-12-13), not I2C (A4-A5).
Double check on your card.

5

CrossRoads:
SD card modules typically use SPI (d10-11-12-13), not I2C (A4-A5).
Double check on your card.

Oh sorry, I am using Real Time Clock (RTC) not sd card. Real Time Clock is using sda and scl pins.

Thank you very much for reply, I will try now connect in parallel.

thank you again :slight_smile:

6

Yes they are working in parallel.