Gravity: I2C to GPIO Shield V2.0

I2C-controlled GPIO expander shield providing 16 additional digital I/O ports with internal pull-ups. Supports up to 8 modules on a single bus via configurable I2C addresses.

P0.0 / GPIO 0 / ED0P0.0
PCA9555 port P0.0; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.1 / GPIO 1 / ED1P0.1
PCA9555 port P0.1; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.2 / GPIO 2 / ED2P0.2
PCA9555 port P0.2; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.3 / GPIO 3 / ED3P0.3
PCA9555 port P0.3; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.4 / GPIO 4 / ED4P0.4
PCA9555 port P0.4; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.5 / GPIO 5 / ED5P0.5
PCA9555 port P0.5; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.6 / GPIO 6 / ED6P0.6
PCA9555 port P0.6; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P0.7 / GPIO 7 / ED7P0.7
PCA9555 port P0.7; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.0 / GPIO 8 / ED8P1.0
PCA9555 port P1.0; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.1 / GPIO 9 / ED9P1.1
PCA9555 port P1.1; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.2 / GPIO 10 / ED10P1.2
PCA9555 port P1.2; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.3 / GPIO 11 / ED11P1.3
PCA9555 port P1.3; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.4 / GPIO 12 / ED12P1.4
PCA9555 port P1.4; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.5 / GPIO 13 / ED13P1.5
PCA9555 port P1.5; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.6 / GPIO 14 / ED14P1.6
PCA9555 port P1.6; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
P1.7 / GPIO 15 / ED15P1.7
PCA9555 port P1.7; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15
Type · digital ioVoltage · +5V module logic per DFRobot specification
SCLArduino A5 / I2C SCL
I2C clock line from Arduino analog pin 5 per DFRobot product introduction
Type · i2c clockVoltage · +5V Arduino/I2C shield logic per DFRobot specification
SDAArduino A4 / I2C SDA
I2C data line from Arduino analog pin 4 per DFRobot product introduction
Type · i2c dataVoltage · +5V Arduino/I2C shield logic per DFRobot specification
+5VArduino shield 5V rail
Module power supply input; DFRobot specification states module power supply +5 V
Type · powerVoltage · +5V
GNDArduino shield ground rail
Common ground for Arduino shield and GPIO board
Type · groundVoltage · 0V

Pin	Position	Type	Function	Voltage
P0.0 / GPIO 0 / ED0	P0.0	digital io	PCA9555 port P0.0; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.1 / GPIO 1 / ED1	P0.1	digital io	PCA9555 port P0.1; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.2 / GPIO 2 / ED2	P0.2	digital io	PCA9555 port P0.2; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.3 / GPIO 3 / ED3	P0.3	digital io	PCA9555 port P0.3; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.4 / GPIO 4 / ED4	P0.4	digital io	PCA9555 port P0.4; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.5 / GPIO 5 / ED5	P0.5	digital io	PCA9555 port P0.5; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.6 / GPIO 6 / ED6	P0.6	digital io	PCA9555 port P0.6; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P0.7 / GPIO 7 / ED7	P0.7	digital io	PCA9555 port P0.7; DFRobot reference maps P0.0-P0.7 to GPIO 0-7 / ED0-ED7	+5V module logic per DFRobot specification
P1.0 / GPIO 8 / ED8	P1.0	digital io	PCA9555 port P1.0; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.1 / GPIO 9 / ED9	P1.1	digital io	PCA9555 port P1.1; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.2 / GPIO 10 / ED10	P1.2	digital io	PCA9555 port P1.2; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.3 / GPIO 11 / ED11	P1.3	digital io	PCA9555 port P1.3; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.4 / GPIO 12 / ED12	P1.4	digital io	PCA9555 port P1.4; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.5 / GPIO 13 / ED13	P1.5	digital io	PCA9555 port P1.5; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.6 / GPIO 14 / ED14	P1.6	digital io	PCA9555 port P1.6; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
P1.7 / GPIO 15 / ED15	P1.7	digital io	PCA9555 port P1.7; DFRobot reference maps P1.0-P1.7 to GPIO 8-15 / ED8-ED15	+5V module logic per DFRobot specification
SCL	Arduino A5 / I2C SCL	i2c clock	I2C clock line from Arduino analog pin 5 per DFRobot product introduction	+5V Arduino/I2C shield logic per DFRobot specification
SDA	Arduino A4 / I2C SDA	i2c data	I2C data line from Arduino analog pin 4 per DFRobot product introduction	+5V Arduino/I2C shield logic per DFRobot specification
+5V	Arduino shield 5V rail	power	Module power supply input; DFRobot specification states module power supply +5 V	+5V
GND	Arduino shield ground rail	ground	Common ground for Arduino shield and GPIO board	0V

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