Reply To: unable to get I2c interface working on XLR8

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#2143
MattWeber
Participant

We don’t have A4/A5 shorted to SDA/SCL like an Arduino Uno does. The advantage of keeping them separate is that with XLR8 you can have I2C devices on SDA/SCL and still have A4/A5 available to use as analog or digital IOs for other purposes. But it does mean that you have to connect to the actual SDA/SCL pins for your I2C function. If necessary, there are spots on the board where you could solder bridge or populate a 0-ohm resistor to connect SDA/SCL to A4/A5, but that’s not the default configuration.
Thanks,
Matt