Expansion Card Interface - Particle Monitor One Manual

Expansion card interface
Expansion card size: 50mm x 90mm (approximately 2" x 3.5")
Connectors: 24-pin 0.1" headers (two, one on each long side)
Male header pins on the bottom of expansion card
Attachment: 4 screws to standoffs (M3 screw recommended)
Pre-built expansion cards will be available, including the Prototype Card. You can also design and
fabricate your own.
If you are building your own card, you can start with the design for the I/O card or prototype card.
The Eagle CAD schematic and board layout files can be found in Monitor One Github repository.
EXPANSION CARD PINOUT
GNSS_PULSE
NC
NC
NC
NC
NC
NC
NC
NFC2_VIN_EN
NFC1_PERIPH_INT
TSOM_MODE TSOM_MODE
TSOM_RESET TSOM_RESET
PWM1 ADC3 TSOM_A7
PWM1 SPI (SCK) ADC2 TSOM_A6
PWM1 SPI (MISO) ADC5 TSOM_A5
PWM1 SPI (MOSI) ADC7 TSOM_A4
GND GND
3V3 3V3
RUN
PGOOD
GND GND
GND GND
VIN VIN
VIN VIN
EXPANSION CARD DIMENSIONS
GP
NC
NC
NC
NC
NC
NC
NC
NFC2
NFC1
MODE
R S T
A7
A6
A5
A4
GND
3V3
NC
P G
GND
GND
VIN
VIN
EXTI
RTC_EXTI RTC_EXTI
RBAT
RTC_BAT RTC_BAT
TX
TX Wire3 (SCL) Serial1 TX
RX
RX Wire3 (SDA) Serial1 RX
GND
GND GND
U+
TSOM_USB_P
U-
TSOM_USB_N
GND
GND GND
C5V
CAN_5V CAN_5V
CAN+
CAN_P
CAN-
CAN_N
GND
GND GND
A3
TSOM_A3_BATT_TEMP
A2
TSOM_A2_BUTTON
A1
TSOM_A1_SCL Wire (SCL)
A0
TSOM_A0_SDA Wire (SDA)
GND
GND GND
5V
5V 5V
GND
GND GND
TVIN
TSOM_VIN TSOM_VIN
GND
GND GND
VBUS
TSOM_USB_VBUS
GND
GND GND
LI+
LI+ LI+
PWM2
PWM2
ADC6 PWM0
ADC4 PWM0