https://devzone.nordicsemi.com/f/nordic-q-a/7728/nrf51-dongle-i2c-pin-mapSo after reading some material it seems like I can pretty much define which pins are responsible for I2C communication. Is there any limitation to which pins I can set? Does this work for basically all serial communication the nrf51 series chips are capableen-USTelligent Community 13Sat, 20 Jun 2015 20:30:09 GMThttps://devzone.nordicsemi.com/thread/27514?ContentTypeID=1Sat, 20 Jun 2015 20:30:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:53ce7a81-6139-4272-b5d9-183011b7c4b1Hung Bui<p>@JoeS: No, there is no limitation for digital pins. You can basically configure any GPIO pins as I2C pins.</p> <p>There is only one note, try not to select the pins close to the radio&#39;s pin (ANT1, ANT2) to do high frequency transmission.</p><div style="clear:both;"></div>