Connector: CONAN and the rest

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Board to Board connectors provide the flexiblity to combine the various modules of the Particle system such as Particle Boards and Sensor Boards or Particle Board an Serial Board. The connector used on all Particle devices is FCI's Conan 21 pin connector with a total board-to-board height of 5 mm:

FCI part number 91931-31121 (female/Receptacle). Farnell order number 973440 (see picture below, right side). Female Connectors are used in the Particle, Breakout/Proto Board and Serial Board
FCI part number 91911-31121 (male/header). Farnell order number 973348 (see picture below, left side). Male Connectors are used in the Sensor boards (spart, ssimp), the serial board, the breakout/proto board, the serial board, the xbridge, the test board
Pin number see picture below (right: female, left: male)

Other connectors used are 2.54mm standard connectors (breakout/proto board), connectors for power supply (serial board/XBridge, power board), Ethernet (for XBridge) and serial line (for serial board)

The connector is used to

provide the connection between the particle board AND one of the sensor boards
provide the interface to program/flash the processor of: particle, sensor particle (spart) by using the programming adapter and a programmer
provide the interface between the particle board AND the (serial board OR/AND breakout board) for interconnection
provide the interface between the particle board AND the test board to test the particle
provide the interface between the sensor particle (spart) board AND the (serial board OR/AND breakout board) for interconnection

The following combinations are possible. Subsets of the below named combinations are also possible (e.g. particle AND breakout)

particle board AND serial board AND (several) breakout board(s)
particle board AND (several) breakout board(s) AND any of the sensor board
particle board AND (several) breakout board(s) AND test board
particle board AND programming adapter
sensor particle (spart) board AND programming adapter

You may also leave out one of the components in the above combinations.

The Conan Connector lines are used for communication of I/O signals (digital and analog), status and control lines (e.g. reset) and for power supply (gnd and V+). The following table gives an overview over the pin assignment for the various boards:

Board	Particle 2/0x,2/1x (female)	Spart 2/0x (male)	SSimp 1/92 (male)	Serial 1/8x female	Serial 1/8x male	XBridge (male)	Test (male)	Particle 1/8x (female)
PIN
1	I/O/S: V+ out: 3.3V, in: 3.3V (*1)	I/S: V+:3-3.3V	I/S: V+ (in): 3-3.3V	O/S: V+: 3.3V	O/S: V+: 3.3V	O/S: V+ 3.3V		I/O/S: V+ :out:3V, in: 3-3.3V (*1)
2	I/O/D: B0 Processor / Ball Switch Input (Pulled down line)	I/O/D: B0 Processor	I/D: Ball Switch (not soldered)			I/O/D: QB0, DA0 FIFO	to PIN 14	I/O/D: B0 Processor / Ball Switch Input (Pulled down line)
3	I/O/D: B1 Processor	I/O/D: B1 Processor	I/D: LED amber			I/O/D: QB1, DA1 FIFO	to 11, 20	I/O/D: B1 Processor
4	I/O/D: B2 Processor	I/O/D: B2 Processor	I/S: Power line for ADXL, TC74, TSL2550			I/O/D: QB2, DA2 FIFO	to 19, 12	I/O/D: B2 Processor
5	I/O/D: B3 Processor		O/D: ADXL XOUT			I/O/D: QB3, DA3 FIFO	to 13	I/O/D: B3 Processor
6	I/O/D: B4 Processor		O/D: ADXL YOUT		O/D:RX	I/O/D: QB4, DA4 FIFO	to 15	I/O/D: B4 Processor
7	I/O/D: B5 Processor		O/D: ADXL ZOUT		i/D:TX	I/O/D: QB5, DA5 FIFO	to 16	I/O/D: B5 Processor
8	I/O/D: B6 Processor	I/O/D: B6 Processor	O/A: TSL2xx or Hygro out	I/D: RTS	I/D: RTS	I/O/D: QB6, DA6 FIFO	to 17	I/O/D: B6 Processor
9	I/O/D: B7 Processor	I/O/D: B7 Processor	I/O/B: I2C SCL (pulled up)	O/D: CTS	O/D: CTS	I/O/D: QB7, DA7 FIFO	to 18	I/O/D: B7 Processor
10	I/C: MCLR (Reset) Processor (Pulled up line)	I/C: MCLR (Reset) Processor (Pulled up line)						I/C: MCLR (Reset) Processor (Pulled up line)
11	I/O/A/D: A2 Processor (Analog Input 2)		O/A: Audio out			I/O/D: QB8, DA8 FIFO	to 3, 20	I/O/A/D: A1 Processor (Analog Input 1)
12	I/O/A/D: A3 Processor (Analog Input 3)		O/A: Pressure,force out			I/O: /FEB FIFO	to 4, 19	I/O/A/D: A2 Processor (Analog Input 2)
13	I/O/A/D:F0 Processor (Analog Input 5)		I/O/B: I2C SDA (pulled up)			I/D: /RB FIFO	to 5	I/O/A/D:A3 Processor (Analog Input 3)
14	I/O/A/D:A5 Processor (Analog Input 4)		I/S: TSL2xx, Hygro Powerline			I/D: /WA FIFO	to 2	I/O/A/D:A5 Processor (Analog Input 4)
15	D/B: D6 Processor / SDA I2C Memory, Pulled-Up						to 6	D/B: D4 Processor / SDA I2C Memory, Pulled-Up
16	D/B: D3 Processor/ SCL I2C Memory, Pulled-up line					I/O/D: B7 Processor	to 7	D/B: D5 Processor/ SCL I2C Memory, Pulled-up line
17	I/O/D: D4 Processor		I/S: Audio, Pressure/force Power Supply			I/O/D: B6 Processor	to 8	I/O/D: D6 Processor
18	I/O/D: D5 Processor					O/D: /FFA FIFO	to 9	O/C: D7 Processor / Power I2C and Memory
19	I/O/D: C6 Processor / TX1	I/O/D: C7 Processor / RX		O/D:RX			to 4,12	I/O/D: C6 Processor / TX
20	I/O/D: C7 Processor / RX1	I/O/D: C6 Processor / TX		i/D:TX			to 3,11	(I/O/D,*2): C7 Processor / RX, parallel to RF Transceiver out
21	GND	GND	GND	GND	GND	GND		GND

I: Input line
O: Output line
S: Supply line
C: Control line
D: Digital line
A: Analog line
B: Bus line

*1: Do not power the particle board via the attached battery or plugged in battery AND the Conan Connector
*2: Restricted access. See programming documentation