Connecting LCD and real time clock

Projects General Guidance
1

Hi!

I have arduino mega 2560, real time clock (DS3231) and LCD. The latter is connected via I2C modul. http://www.ebay.com/itm/251471058918?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Both, real time clock and LCD/I2C have their own SDA and SCL connections, while the arduino has just one SCL and one SDA.
Therefore, my question is:
It is possible to connect both on arduino?
And if the answer is yes, how?

Thanks for help,
Jonathan2

2

I2C is a bus so you string lots of devices together: have a look at the diagram here. You'll find it easy to physically connect the wires on a breadboard.

3
4

So if I understand you correctly both, real time clock and LCD can be driven with single I2C bus?

5

Jonathan2:
So if I understand you correctly both, real time clock and LCD can be driven with single I2C bus?

That is correct. The I2C bus can have over 100 devices connected to it as long as each device has a unique address.

6

Ok, I uderstand.
Would you be so kind and give me more information how to do this, or if can you direct me...where I can find some instruction and/or details?
(I'm a beginner...)

Best,
Jonathan.

7

Nick Gammon I2C tutorial