DS1307 RTC works fine with Uno, doesn't work at all with Pro Mini (SOLVED)

Development Tools IDE 1.x
1

Hi,
I'm trying to do GreatScott's Nixie clock project and it's almost finished, but when I connected the TinyRTC module, the test sketch didn't recognise it. So I connected it to the Uno, used the same computer, program, libraries and it worked perfectly.

I'm sure that everything is connected, the pins of the RTC are connected to the right pins on the Atmel IC itself.

I've tried other libraries but the problem still exists.

What could I try to solve it? This is my first time with I2C and RTCs.

Thanks.

2

It turns out different boards have different pinouts. Solved!