How can I add 2 pressure sensors BMP180 to Arduino Uno?

Projects Programming
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jtheires:
Sens[1].SCLpinI=4 for example: Arduino UNO defines A4 for the SDA function. Does your script/code redefine UNO pin 4 from default of SDA to SCL?

Pin 4 isn't the same as pin A4.

This is a software I2C library. It doesn't use the I2C hardware in the processor. So you can use any two pins (two for each BMP180) that you want.

An easy way to try his code without making very many changes is to define the same sensor twice. For example, if you hook up your BMP180 to pin A4/A5 for SDA/SCL (as if you were going to use hardware I2C) then modify his code like this:

//declare pins
Sens[0].SCLpinI=A5;
Sens[0].SDApinI=A4;
Sens[1].SCLpinI=A5;
Sens[1].SDApinI=A4;

It should then read the same sensor twice and output (close to) the same temperature & pressure twice in a row.