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The 3.3-V power can be taken from the Arduino’s onboard voltage regulator, and the I2C bus connections SDA and SCL can be used directly without additional level shifters ... output (AFL and AFR) of ...
This Stackable Arduino Microcontroller Can Power Your LEGOs mCookie is color-coded, cute, and capable of some pretty fantastic things By John Wenz Published: May 18, 2015 12:47 PM EDT ...