The Gravity: Analog Signal Isolator is a plug-and-play module that provides electrical isolation between analog sensors and microcontrollers, ensuring accurate and interference-free measurements. It features an onboard 5V isolation power supply, so no external power is requiredmaking your project setup simpler and safer. This analog signal isolator effectively solves ground loop issues in sensitive electronics.

Perfect for pH sensors, conductivity sensors, and any application where multiple analog sensors share a power source. It is an essential Arduino compatible galvanic isolation solution for precision data logging.

Key Features

• Built-in 5V isolated power supply for sensor isolation

• Prevents interference between multiple analog sensors and eliminates ground loop noise

• Designed for DFRobot 3-pin analog sensors, no soldering required

• 1:1 signal transmission ratio for minimal signal distortion in your analog signal isolator

• Plug-and-play operationno code changes needed for Arduino projects

Applications

• Multi-parameter water quality monitoring systems

• Preventing signal overlap and sensor interference in sensor-heavy environments

• Ensuring stable output in environmental or industrial sensor networks with galvanic isolation

• Arduino-compatible sensor isolation for robust DIY electronics

Technical Specifications

Non-Isolation Terminal (MCU Side)

• Supply Voltage: 5.0 0.1V

• Analog Output: 0 ~ 5.0V

Isolation Terminal (Sensor Side)

• Output Voltage: 5.0 0.2V

• Analog Input: 0 ~ 5.0V

Compatibility Notes

• Compatible with almost all DFRobot analog sensors for easy Arduino integration

• Max output current from sensor side: 170mA

• Ensure no shared GND between sensor and MCU sides to maintain galvanic isolation

• Module may warm up during extended operationthis is normal for an analog signal isolator

Example Project

How to Use the Gravity Signal Isolator with Arduino
Learn how to integrate and protect sensors in projects using DFRobots isolator module for better sensor interference management.

Whats Included

• Gravity: Analog Signal Isolator 1

• PH2.03P Cable 2

Why Choose This Module?

• Eliminates cross-talk and sensor interference between analog sensors

• Increases sensor measurement accuracy by removing ground loop issues

• Requires no additional power modules or coding for galvanic isolation

• Compact and easy to integrate into any Arduino-based system

Reference

Wiki

Schematic

Layout

Datasheet