Jumpers
There are four jumpers on the underside of the product, each labeled with its function. At the upper right of the
picture is a three way jumper labeled I²C that connects two pull-up resistors to the I C data lines. If you have
many devices on your I C data lines, then you may consider cutting these. On the left side of the board is a jumper
labeled PWR . If you cut this trace it will disconnect the Power LED. Just below is the PPS jumper that when cut
disconnects the PPS LED. Finally, there's a jumper labeled SPI which enables the SPI data bus thus disabling the
UART functions on those lines. For more information, check out our tutorial on working with jumper pads and PCB
traces.
Chip Antenna or U.FL Connector
The SparkFun GPS NEO-M9N with Chip Antenna has a GNSS antenna near its left Qwiic connector while its
cousin has a U.FL connector in which you can connect a patch antenna.
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