The Gravity Digital I2C Signal Isolator is a must - have device for your sensor modules. It can isolate I2C digital signals and offer isolated power to sensor modules, effectively stopping mutual interference between them. This makes it ideal for multi - parameter water quality detection systems, where water quality sensors often interfere with each other.
In real - world scenarios, interference is common. For instance, a running pump in a fish tank can release signals into the water, disturbing the sensors. Electrical isolation is then essential for stable sensor operation. Sensors like pH sensors and electrical conductivity sensors, which share a power source and measure in the same container, may interfere with each other and malfunction. This isolator solves such problems by isolating signals and power.
After the analog signal isolator, we've introduced this digital signal isolator specifically for I2C digital signals. The on - board 5V isolation power chip directly powers the sensor module, eliminating the need for additional power. It's designed for DFRobot I2C connector sensors or modules, offering plug - and - play convenience without any welding. Just connect it to your circuit for electrical isolation, and you don't need to modify the sensor module code on the control board.
Features:
- Onboard 5V 0.75W isolation power chip for simple and convenient use without extra power.
- Nearly compatible with all DFRobot I2C connector sensors or modules, plug - and - play, no welding.
Specifications:
- Operating Voltage: 5.0V
- Connector Type: PH2.0 - 4P
- Interface Protocol: I2C(IIC)
- Interface Signal Level: High 3.3V, Low 0V
- Dimension: 42 * 32mm / 1.65 * 1.26 inch
Controller Side (Non - isolation Side):
- Supply Voltage: 5.0 ± 0.15V
- No - load Current: 15mA(TYP)
Module Side (Isolation Side):
- Output Voltage: 5.0 ± 0.15V
- Output Current: 150mA(MAX)
Documents:
- Product wiki
- More Documents
Shipping List:
- Gravity Digital I2C Signal Isolator x1
- Double PH2.0 - 4P Cable x1
- Gravity - 4P I2C/ UART Sensor Cable x1
- XH2.54 - 4Pin Header x2
Using the Gravity Digital I2C Signal Isolator is a breeze. First, check the operating current of your sensor or module. The maximum output current from the module side is 150mA, so make sure your sensor or module's current doesn't exceed this limit. Then, connect the isolator to your circuit. It's designed for DFRobot I2C connector sensors or modules, so just plug it in - no welding needed. And you don't have to change the code of the sensor module on the control board.
When using, remember that all pins on the module side (isolation side) are isolated from those on the controller side (non - isolation side). Don't short - circuit them, or it might damage the isolator. Also, it's normal for the isolator to generate some heat while working.
As for maintenance, keep it in a dry and clean environment. There's not much else you need to do since it's a solid - state device. Just use it as directed, and it will serve you well for a long time.
