DFRobot Gravity Analog EMG Sensor by OYMotion - PJ-342 Electrode Connector
DFRobot Gravity Analog EMG Sensor by OYMotion - PJ-342 Electrode Connector - Image 2
DFRobot Gravity Analog EMG Sensor by OYMotion - PJ-342 Electrode Connector - Image 3
DFRobot Gravity Analog EMG Sensor by OYMotion - PJ-342 Electrode Connector - Image 4
SKU: SENS-3036
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DFRobot Gravity Analog EMG Sensor by OYMotion - PJ-342 Electrode Connector

₹7,289.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Analog EMG Sensor, developed in collaboration with OYMotion, is a surface electromyography (sEMG) module designed for biomedical signal acquisition. It provides a conditioned analog output (0-3.0V) compatible with 3.3V/5V microcontrollers like Arduino, Raspberry Pi, and ESP32 for analyzing muscle activity and neural signals.

Features

  • Detects surface EMG (sEMG) signals within a ±1.5mV range with 1000x amplification.
  • Integrated differential input and analog filtering suppress 50/60Hz powerline interference for cleaner signal acquisition.
  • Operates from a single 3.3V to 5.5V supply with low power consumption, ideal for portable biomedical projects.
  • Features a durable metal dry electrode (PJ-342 connector) for long life and ease of use without conductive gel.
  • Provides a stable 0-3.0V analog output signal referenced to 1.5V for direct ADC connection to microcontrollers.

Out of stock

Description

The DFRobot Gravity Analog EMG Sensor is engineered for precise acquisition of surface electromyography (sEMG) signals, reflecting muscle contraction and neural activity. It incorporates a high-performance instrumentation amplifier followed by active filtering stages, providing a total gain of approximately 1000x to bring microvolt-level biosignals into a robust 0-3.0V analog range. The differential input architecture offers a high common-mode rejection ratio (CMRR), effectively canceling out ambient electromagnetic noise and power frequency interference.

Designed for ease of integration, the module outputs a DC-biased signal centered around 1.5V, allowing both positive and negative sEMG waveforms to be captured by a standard microcontroller ADC. The use of a metal dry electrode via a standard PJ-342 connector simplifies setup for both static muscle monitoring and dynamic motion analysis, making it suitable for research, rehabilitation robotics, prosthetics control, and human-machine interface (HMI) development.

Key Features

  • High-gain, low-noise analog front-end amplifies ±1.5mV sEMG signals by 1000x.
  • Differential input with high CMRR for superior rejection of common-mode noise and 50/60Hz hum.
  • Integrated band-pass filter optimizes the signal for typical sEMG frequency ranges.
  • Single-supply operation (3.3V-5.5V) with low current draw for portable and wearable applications.
  • Robust metal dry electrode ensures reliable contact and long-term durability without conductive gel.
  • Standard Gravity-series PH2.0-3P connector for quick, foolproof wiring to microcontroller boards.
  • Provides a conditioned 0-3.0V analog output, centered at 1.5V, for direct ADC sampling.

Applications

  • Muscle activity monitoring and biofeedback for sports science and rehabilitation.
  • Gesture recognition and control interface for prosthetics and assistive devices.
  • Human-Machine Interface (HMI) development for robotics and gaming.
  • Biomedical research and education in physiology and neural signal processing.
  • Fatigue detection and ergonomic assessment in occupational health studies.

Technical Specifications

BrandDFRobot
Product NameGravity Analog EMG Sensor by OYMotion
Supply Voltage+3.3V to +5.5V DC
Operating Voltage+3.0V (Internal Reference)
Detection Range (Input)±1.5mV
Amplification~1000x
Output SignalAnalog Voltage
Output Voltage Range0 to 3.0V
Reference Voltage1.5V
Electrode ConnectorPJ-342
Module ConnectorPH2.0-3P
Shipping Weight0.02 kg
Shipping Dimensions8 x 8 x 1 cm

Frequently Asked Questions

What is the input voltage range for this EMG sensor?

The sensor operates on a single power supply ranging from 3.3V to 5.5V DC. It is compatible with most 3.3V and 5V microcontroller systems like Arduino, ESP32, and Raspberry Pi. Ensure your power source is stable to maintain signal integrity.

How do I connect the electrodes and read the output signal?

Connect standard EMG electrodes with a PJ-342 connector to the sensor's input. The conditioned analog output uses a PH2.0-3P connector: Red wire (VCC), Black wire (GND), and Blue wire (Signal). Connect the signal wire to an analog input pin on your microcontroller to read the 0-3.0V output with an ADC.

Does this sensor require conductive gel to work properly?

No, the sensor is designed to work with its included metal dry electrode, which provides good signal quality without the need for conductive gel. This simplifies setup and improves comfort for longer-term monitoring sessions in both static and dynamic applications.

What is the purpose of the 1.5V reference in the output signal?

The output signal is centered around a 1.5V DC bias. This allows the analog voltage swing (0-3.0V) to represent both the positive and negative phases of the raw ±1.5mV EMG signal after amplification, enabling capture of the full waveform by a single-ended microcontroller ADC.

Can this sensor be used for real-time muscle control applications?

Yes, the sensor provides a high-bandwidth, low-latency analog output suitable for real-time applications. The filtered and amplified signal can be processed by a microcontroller to detect muscle activation levels, trigger events, or control servos/motors for prosthetics, robotics, or interactive installations.

Package Includes

  • 1 x DFRobot Gravity Analog EMG Sensor by OYMotion

Additional Information

Weight 0.02 kg
Dimensions 8 × 8 × 1 cm

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