MCookie Upin27 Layout

Each stack-able mCookie module uses a set of 27 pins.

Below is the chart which shows which pins are used for each specific module and can be used to find overlaps. If a conflict or overlap exist it is unlikely that both modules will be usable at the same time for a project.

See section Known Conflicts to see a list of already known conflicts.

Upin27 Layout

The Chart

Pin Color Legend

Color	Meaning
Green	Provides pin.
Red	Occupies pin. Will conflict.
Grey	Alternative pin for labeled name. Or unconnected pin.
Blue	Uses pin, but does not conflict.

Module	BUS	I2CAddr (7bit)	D0	D1	D2	D3	D4	D5	D6	D7	D8	D9	D10	D11	D12	D13	A0	A1	A2	A3	A4	A5	A6	A7	5V	3V3	RST	AREF
Core Modules
Core			RX0	TX0										MISO	MOSI	SCK					SDA	SCL			IN	(IN)	RST	AREF
Core+			RX0	TX0	RX1	TX1								MISO	MOSI	SCK					SDA	SCL			IN	(IN)	RST	AREF
CoreUSB			RX1	TX1										MISO	MOSI	SCK					SDA	SCL			IN	OUT	RST	AREF
CoreRF			RX0	TX0	RX1	TX1								MISO	MOSI	SCK					SDA	SCL			IN	IN	RST	AREF
Core Programmers
BLE Upload	UART		TX	RX																						IN	OUT
mBattery	UART		TX	RX																					OUT	OUT	OUT
USBTTL	UART		TX	RX																					OUT	OUT	OUT
USBttlC	UART		TX	RX																					OUT	OUT	OUT
Function Modules
Audio	UART		(TX)	(RX)	TX	RX	(TX)	(RX)															ADKEY		OUT	IN
AudioPro	SPI			MIDI	DERQ									MISO	MOSI	SCK			DCS	CS						IN
Battery Management																									OUT	OUT	OUT
GPS	UART		(TX)	(RX)	TX	RX																				IN
mBattery	UART		TX	RX																					OUT	OUT	OUT
Motion	I2C	0x68(MPU) 0x1E(HMC) 0x77(BMP)			(INT)	(INT)															SDA	SCL				IN
SD	SPI									CS				MISO	MOSI	SCK	CD									IN
RTC	I2C	0x51(pcf) 0x50(eep)			INT	(INT)															SDA	SCL			(IN)	IN
Communication Modules
Bluetooth (BLE)	UART		TX	RX	(TX)	(RX)	(TX)	(RX)																		IN
BLE Upload	UART		TX	RX																						IN	OUT
NFC	I2C	0x24																			SDA	SCL				IN
WiFi	UART		TX	RX	(TX)	(RX)																				IN	RST
Extension Modules
Amplifier												RIN	LIN												IN
Hub			Conflicts will occur if a Sensor / Trinket is connected to a pin used by another non-Core module. Read about Hub module.																						IN	IN
Motor								2A	1A	2B	1B														IN
LED Matrix																	DI	(DI)	(DI)						IN
OLED	I2C	0x3C																			SDA	SCL				IN

Known Conflicts

mCookie Programmers, mCookie WiFi and mCookie Bluetooth

• mCookie Core Programmers uses pin D0, and pin D1 for programming and Serial communication (serial port from Core modules to Computer via Serial Monitor). Programming and Serial Monitor occurs at separate times, which means these will not conflict with each other.
• mCookie WiFi and mCookie Bluetooth uses (by default) pin D0 and pin D1 for communicating to and from a Core module.
• A conflict occurs on Core modules (Core, Core+, CoreRF) between mCookie Core Programmers and Communication modules such as mCookie WiFi and mCookie Bluetooth as they use the same pins (pin D0 and pin D1). Refer to chart to see overlap.
• These conflicts can be avoid by rewiring the mCookie WiFi or mCookie Bluetooth module to a different set of pins by cutting the trace under the board and creating the appropriate solder bridge.

mCookie Motor

• mCookie SD - Pin D7

mCookie SD

• mCookie Motor - Pin D7

Pin Usage Examples

Example 1

• A mCookie Core module is picked as a Core module. mCookie Core provides the pins for functionality.
• A mCookie Motor is stacked. mCookie Motor uses pins D5, D6, D7, and D8 from the mCookie Core module. D5, D6, D7, D8 are now used / consumed / occupied by the mCookie Motor module.
• No conflicts exists.

Example 2

• A mCookie Core module is picked as a Core module. mCookie Core provides the pins for functionality.
• A mCookie Motor is stacked. mCookie Motor uses pins D5, D6, D7, and D8 from the mCookie Core module. D5, D6, D7, D8 are now used / consumed / occupied by the mCookie Motor module.
• A mCookie AudioPro is stack. mCookie AudioPro uses pins D13, D12, D11, D8.
• Pin D8 is now conflicted. D8 on mCookie Motor is used for motor control. D8 on mCookie SD is used to select the SD card module in SPI mode. Therefore, both modules will not work correctly because of the overlapping pin.