I see on arduino UNO there is twice SDA and SDL: The 2 first pins side to usb connector are SDA/SCL according to documentation. And the ... ... <看更多>

I only have an Arduino Uno, and I don't want to get a Mega. Share. ... <看更多>

For example, on an Arduino Uno, if you wish to use pin A0 as a digital pin, the digital pin number equivalent is 14. In general, to find the digital ... ... <看更多>