3.3V Pin
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- rahatmaini
- Posts: 176
- Joined: Wed Aug 29, 2012 5:15 pm
3.3V Pin
So there is a 3.3V pin on the Uno. I am extremely confused as to why I need a logic level converter for an i2c device that requires 3.3v when I can just plug it in to the 3.3V pin instead of the 5V pin. PS I am connecting Nunchucky i2c breakout to Arduino Uno R3
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: 3.3V Pin
You can use the 3.3v pin to supply power to a 3.3v device. But a 3.3v device can be damaged if you try to communicate with it using 5v logic signals.
The level converter converts 5v logic signals to 3.3v logic signals. Our Bi-Directional logic converter also will convert 3.3v logic signals to 5v signals which is useful for I2C communication.
The level converter converts 5v logic signals to 3.3v logic signals. Our Bi-Directional logic converter also will convert 3.3v logic signals to 5v signals which is useful for I2C communication.
Please be positive and constructive with your questions and comments.