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