I am doing a project in which wrist blood pressure is integrated with arduino via i2c communication.
The blood pressure monitor i am using is CK-101 and it has i2c communication.The EEPROM in it is K24C08.
The method i can get the data from it is by getting the data from SDA AND SCL pins .But i wanted to know can i connect external wires to SDA and SCL pins of EEPROM and then read the data from arduino ?
seems hack isn'it?
I am pretty sure you can plug and link arduino with the SDA and SCL pins, BUT the module itself must have its own way to power and communicate. Then, your arduino become an unwanted guest trying to engage a conversation is not invited in.
Should make some problems like cutting the normal way the module works, or getting only part of the data you need.
No output on your module you may use?
It might be possible. You would have to "sniff" the transactions and decode them,
The blood pressure module itself has 2 AAA batteries so the blood pressure module is already powered if you are asking this.
By sniff ,you mean code the arduino and read the data from EEPROM?
No, by "sniff", I mean "passively monitor the activity on the I2C bus".
yep. thanks for the info.
My concern is the sniffing (as proposed by @jremington ) may interfere with the internal communication of the module.
There is mean to "latch" the I2C communication from the arduino as master, but I would love to see the results.
Anyway, to try would be better than any of my arguments. 
Oh i seeeee
Yeah i was going to use arduino as master , anyways thanks for the help
Not if you have high impedance inputs connected to the bus.
That is how logic analyzers and oscilloscopes are used to "sniff" transactions.
the idea makes it way in my mind. (I was only on "to substitute" the normal way with the arduino)
I never tried, so now I can't wait to see it works!
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