Gravity: I2C 4-20mA DAC Module
I2C DAC module with 0–25 mA output range, calibrated to the standard 4–20 mA industrial current loop. Compatible with Arduino; useful for driving actuators such as motors and pumps.
Pinout
- VCC
Gravity/I2C logic-side power input. The DFRobot wiki specifies 2.7V-5V I2C signal high level, and the schematic labels the connector VCC net.
Type · PowerVoltage · logic side 2.7V-5V I2C signal high level from wiki specification - GND
Ground reference on the Gravity/I2C connector and output-side terminal blocks, labelled GND in the DFR0972 schematic.
Type · GroundVoltage · 0V - SCL
I2C clock line. The DFR0972 schematic labels SCL on the connector and the wiki identifies I2C control.
Type · I2CVoltage · I2C high level 2.7V-5V from wiki specification - SDA
I2C data line. The DFR0972 schematic labels SDA on the connector and the wiki identifies I2C control.
Type · I2CVoltage · I2C high level 2.7V-5V from wiki specification - VIN
External supply input for the 4-20mA/current-output side, labelled VIN in the DFR0972 schematic.
Type · PowerVoltage · 18V-24V supply, 24V recommended, from wiki specification - VOUT
Analogue current output terminal, labelled VOUT in the DFR0972 schematic. The wiki specifies 0-25mA output current and calibrated 4-20mA use.
Type · SignalVoltage · current output 0-25mA, calibrated 4-20mA use from wiki specification
| Pin | Type | Function | Voltage |
|---|---|---|---|
| VCC | Power | Gravity/I2C logic-side power input. The DFRobot wiki specifies 2.7V-5V I2C signal high level, and the schematic labels the connector VCC net. | logic side 2.7V-5V I2C signal high level from wiki specification |
| GND | Ground | Ground reference on the Gravity/I2C connector and output-side terminal blocks, labelled GND in the DFR0972 schematic. | 0V |
| SCL | I2C | I2C clock line. The DFR0972 schematic labels SCL on the connector and the wiki identifies I2C control. | I2C high level 2.7V-5V from wiki specification |
| SDA | I2C | I2C data line. The DFR0972 schematic labels SDA on the connector and the wiki identifies I2C control. | I2C high level 2.7V-5V from wiki specification |
| VIN | Power | External supply input for the 4-20mA/current-output side, labelled VIN in the DFR0972 schematic. | 18V-24V supply, 24V recommended, from wiki specification |
| VOUT | Signal | Analogue current output terminal, labelled VOUT in the DFR0972 schematic. The wiki specifies 0-25mA output current and calibrated 4-20mA use. | current output 0-25mA, calibrated 4-20mA use from wiki specification |
Pin details
6 connections- VCC
Gravity/I2C logic-side power input. The DFRobot wiki specifies 2.7V-5V I2C signal high level, and the schematic labels the connector VCC net.
PowerVoltage · logic side 2.7V-5V I2C signal high level from wiki specification - GND
Ground reference on the Gravity/I2C connector and output-side terminal blocks, labelled GND in the DFR0972 schematic.
GroundVoltage · 0V - SCL
I2C clock line. The DFR0972 schematic labels SCL on the connector and the wiki identifies I2C control.
I2CVoltage · I2C high level 2.7V-5V from wiki specification - SDA
I2C data line. The DFR0972 schematic labels SDA on the connector and the wiki identifies I2C control.
I2CVoltage · I2C high level 2.7V-5V from wiki specification - VIN
External supply input for the 4-20mA/current-output side, labelled VIN in the DFR0972 schematic.
PowerVoltage · 18V-24V supply, 24V recommended, from wiki specification - VOUT
Analogue current output terminal, labelled VOUT in the DFR0972 schematic. The wiki specifies 0-25mA output current and calibrated 4-20mA use.
SignalVoltage · current output 0-25mA, calibrated 4-20mA use from wiki specification
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