50+ Sda Y Scl Arduino Uno Gif. I am trying to figure if sda and scl pins from arduino uno is a ttl or a cmos technology. I see on arduino uno there is twice sda and sdl:

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On the arduino boards with the r3 layout (1.0 pinout), the sda (data line) and scl (clock line) are on the pin headers close to the aref pin. What you need for this project is: I am not able to find this info anywhere but regarding it is a i2c protocol it does make sense to be a ttl technology.

Found definitions for scl and sda but.

As a reference the table below. Put them where the arduino has them. What you need for this project is: You can use either pins: