Particle Monitor One, Manual

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Pin Name Description Interface
SoM
Pin
MCU
TSOM_A7 / D7 A7 Analog in, GPIO D7, PWM, SPI SS, WKP PWM1 38 P0.05
TSOM_A6 / D6 A6 Analog in, GPIO D6, PWM, SPI (SCK) PWM1 39 P0.04
TSOM_A5 / D5 A5 Analog in, GPIO D5, PWM, SPI MISO PWM1 40 P0.29
TSOM_A4 / D4 A4 Analog in, GPIO D4, PWM, SPI MOSI PWM1 41 P0.29
TSOM_A2_BUTTON / D2 External user button, A2 Analog in, GPIO D2, PWM PWM0 57 P0.28
TSOM_A3_BATT_TEMP /
D3 Battery temperature sensor, A3 Analog in, GPIO D3,
PWM
PWM0 58 P0.30
RX / D9 Serial1 RX, GPIO D9, PWM, Wire3 SDA PWM2 71 P0.08
TX / D8 Serial1 TX, GPIO D8, PWM, Wire3 SCL PWM2 72 P0.06
On the Monitor One, you should not use A2 and A3 as PWM outputs as they are used by the
external user button and battery temperature thermistor.
All pins on the same hardware timer (PWM0, PWM1, or PWM2) must share the same frequency
but can have different duty cycles.
Pin Name Description Interface SoM Pin
CAN_N CAN Data- or CANL CAN_N 64
CAN_P CAN Data+ or CANH CAN_P 65
CAN_5V 5V power out, 0.8A maximum. Can be controlled by software. CAN_5V 66
The CAN transceiver is included on the Tracker SoM. However if you implement CAN on your
expansion card, you will probably want to add protection circuitry. This circuit is present on the
Monitor One CAN expansion card and also on the Tracker One.
Note that the two 60.4 ohm resistors are DNP (do not populate). If populated, these provide the 120
ohm CAN termination, if you need it in your design.
Pin Pin Name Description MCU
1 GNSS_PULSE GNSS time pulse output. Can be used for a GPS fix LED.
2 NC
3 NC
4 NC
PWM
CAN
ALL EXPANSION CARD PINS