DFRobot
DFRobot GP8630N 16-bit I2C/PWM to ±10V & 4-20mA DAC Module
· MPN: DFR1230
This Gravity DAC module converts I2C or PWM digital signals into stable analogue voltage or current outputs for control and automation projects. Built around...
This Gravity DAC module converts I2C or PWM digital signals into stable analogue voltage or current outputs for control and automation projects. Built around the GP8630N chip, it supports output modes such as ±10V, 0-5V, 0-10V and 4-20mA, with 16-bit resolution available in I2C mode.
The symmetrical ±10V output is useful for bidirectional control, such as driving motor controllers or valve actuators where positive, negative and zero voltages can represent forward, reverse and stop. It can interface with 3.3V and 5V logic, and supports 8 configurable I2C addresses for using multiple modules on one bus.
It fits neatly into the DFRobot Gravity ecosystem and is suitable for Arduino, ESP32 and Raspberry Pi projects. The module is supplied with a Gravity-4Pin I2C/UART sensor cable and a Gravity-3Pin analogue sensor cable, with supporting documentation including a product wiki, schematic, dimension drawing, CAD/STP files, datasheet and calibrated accuracy test record.
Typical uses include motor forward/reverse control, lighting brightness control, valve and pump control, signal generation and automation upgrades for small equipment.
Features:
- Supports ±10V symmetrical high-voltage output for bidirectional control
- Provides standard 4-20mA current loop output for industrial sensors
- High 16-bit resolution with low full-scale error (±0.2%)
- Dual interface support: I2C and PWM input signals
- Compatible with 3.3V-5V power supplies and Gravity interface
Specifications:
- Chip Model: GP8630N
- Operating Voltage: 3.3V-5V
- Power/Communication Interface: PH2.0-4Pin/3Pin
- Input Signal: I2C / PWM
- Current Output Range: 0-24mA
- Voltage Output Range: ±12V/0-6V/0-12V
- Number of Channels: 1 channel
- Resolution: 16-bit (I2C mode)
- Resolution: 8-bit, 10-bit (PWM mode, selectable based on controller)
- Full-Scale Error: ±0.2% (measured after fitting calibration)
- Value Range - I2C Mode: 0-65535 corresponds to ±12V, 0-6V, 0-12V, or 0-24mA
- Value Range - PWM Mode: 0-255 or 0-1023 corresponds to output range
- PCB Dimensions: 42 × 32 × 12.39 mm
- Mounting Hole Spacing: 25mm
- Mounting Hole Diameter: 3.0 mm
Jargon buster
Plain-language definitions for the technical terms used above.
- DAC
- A digital-to-analogue converter turns numbers from the microcontroller into a real analogue voltage. It matters if you want to generate simple waveforms, audio-style signals, or variable control voltages rather than just on/off outputs.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
Supplier page — dfrobot.com
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