Looking for Ardunio board/ shield with Ethernet shield and i2c

Other Hardware 3rd Party Boards
1

Hi,
My project needs an I2C interface AND Ethernet for Ardunio. I have seen a few Arduino Ethernet shield in amazon. but they never mentioned about i2c.

Is there any Ardunio board with Ethernet and I2C or Any Ardunio Ethernet shield with Ethernet and I2C?

2

You'd be hard pressed to find an Arduino board that didn't have I2C- Uno, Nano, Pro Mini etc all have I2C. Add an ethernet shield and you have I2C + ethernet.

3

Sorry to say, I could not find it

4

What part can't you find? I2C is on pin A4 and A5 (on a Uno, Nano etc). Ethernet shields aren't hard to find at all.

5

Hi,
You mean to say normal Uno board + Ethernet shield will do ...Am I right?

6

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7

Don't forget 4.7K pullup resistors to 5V on the SCL, SDA lines.

If using 3.3V powered devices, then add these lines after Wire.begin() in setup:
digitalWrite (SCL, LOW);
digitalWrite (SDA, LOW);
to turn off the weak internal pullup to 5V resistors,
and add 3.3K pullup resistors to 3.3V.

8

Please note that A4 and A5 are not always the I2C pins; depends on the board that you have. Do some research.

9

"R3" and newer boards have separate "I2C" pins to the left of the Aref pin.
Since ethernet is almost always interfaced via SPI, it should not conflict with the use of I2C...

("I2C" is actually a trademark. You may see it called "TWI" instead.)

10

Is it ICSP?

11

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