A6
Analog in, GPIO, PWM, SPI SCK
A7
Analog in, GPIO, PWM, SPI SS, WKP
TX
MCU serial TX, GPIO D8, Wire3 SCL
RX MCU serial RX, GPIO D9, Wire3 SDA
1
Available on expansion card connector (internal)
On the Monitor One, the expansion card connector allows the use the I2C, Serial, and SPI at the
same time
On the Tracker One, you must choose between using the M8 for either serial or I2C. SPI is not
available.
1
Not available
Not available
1
MCU serial TX, GPIO D8, Wire3 SCL
1
MCU serial RX, GPIO D9, Wire3 SDA
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