node-red-contrib-remware-ina3221-sensor 0.1.1
node-red wrapper for the ina3221
INA3221 Node-RED Component
This Node-RED custom node reads data from the INA3221 triple-channel voltage and current monitor. It provides six outputs, delivering millivolts and milliamps for each of the three channels.
Features
- Six Outputs:
- Output 1: Voltage (millivolts) for Channel 1
- Output 2: Current (milliamps) for Channel 1
- Output 3: Voltage (millivolts) for Channel 2
- Output 4: Current (milliamps) for Channel 2
- Output 5: Voltage (millivolts) for Channel 3
- Output 6: Current (milliamps) for Channel 3
- Configurable I2C address and bus number.
- Adjustable update interval for reading sensor data.
Installation
Clone the Repository or Download Files: Place the files in your local Node-RED custom nodes directory: ~/.node-red/nodes/ina3221
Folder Structure: Ensure the following files are in the directory: ina3221/ ├── ina3221.js // Node logic ├── ina3221.html // Node editor and help ├── hardware.png // Optional: Node icon
Add to a Flow: Drag and drop the
INA3221node into your flow and configure its properties.
Node Properties
| Property | Description | Default Value |
|---|---|---|
| Name | Optional name for the node. | (empty) |
| I2C Address | I2C address of the INA3221 sensor. | 0x40 |
| I2C Bus | I2C bus number (e.g., 1 for Raspberry Pi). |
1 |
| Update Interval | Time (in milliseconds) between sensor readings. | 1000 |
Outputs
| Output # | Description |
|---|---|
| 1 | Voltage (millivolts) - Ch1 |
| 2 | Current (milliamps) - Ch1 |
| 3 | Voltage (millivolts) - Ch2 |
| 4 | Current (milliamps) - Ch2 |
| 5 | Voltage (millivolts) - Ch3 |
| 6 | Current (milliamps) - Ch3 |
Example Usage
Add the Node: Drag the
INA3221node into your flow.Configure the Properties: Set the I2C address, bus number, and update interval in the node editor.
Connect Outputs: Connect the outputs to other nodes (e.g., debug nodes or data storage).
Dependencies
- Hardware: INA3221 sensor connected to the I2C bus.
- Node.js Modules:
i2c-bus: Install using:
npm install i2c-bus
Troubleshooting
- Ensure the INA3221 sensor is properly connected to the I2C bus.
- Check that the I2C address matches the hardware configuration.
- Use
i2cdetectto verify the sensor is detected:
sudo i2cdetect -y 1
License
This Node-RED component is released under the MIT License.
Contributing
Contributions are welcome! Feel free to submit issues or pull requests.
Acknowledgments
This component uses the i2c-bus library for I2C communication and is based on the INA3221 triple-channel voltage/current monitor.
