Electronics

EMG Muscle Signal Sensors Module Sensor Kit T084

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Description

  • The EMG Muscle Signal Sensors Module Sensor Kit T084S is a device that measures the electrical activity of muscles and produces a signal to show the amount of muscle expansion and contraction. It is capable of measuring the filtered and rectified electrical activity of a selected muscle, using electromyogram (EMG) technology.
  • The kit includes sensors that can detect the EMG signals and a microcontroller to process the data. The output of the sensor is in the range of 0 to Vs volts, where the voltage output size is selected based on the amount of muscle activity.
  • This EMG muscle sensor is particularly useful for monitoring muscle activity and can be used for various control systems. With smaller and more powerful microcontrollers and integrated circuits, EMG sensors can be used for a wide range of applications such as prosthetic limbs, rehabilitation systems, and robotic control systems.
  • Overall, the EMG Muscle Signal Sensors Module Sensor Kit T084S is a high-quality device that can provide accurate and reliable measurements of muscle activity. It is ideal for researchers, scientists, engineers, and hobbyists who are interested in studying and developing systems that involve measuring muscle activity.

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Features:

  • Small Form Factor
  • Specially Designed for Microcontrollers
  • Adjustable Gain using onboard potentiometer
  • 5mm Connector

Specification:

  • IC: T084
  • Power Supply: Normally ±9V dual power supply, the minimum voltage is ±3.5V
  • Diameter of Electrode Pad: 52 mm
  • Cable Length: 2 feet
  • Dimension: 27.3 x 27.3 mm
  • Weight: 30gm

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Applications:

  • Robotics: The EMG Muscle Signal Sensors can be used in the development of robotic control systems that rely on muscle activity. For example, prosthetic limbs and exoskeletons can be designed with sensors that measure the muscle activity of the user and translate that into control signals for the robotic system.
  • Medical equipment: EMG Muscle Signal Sensors are commonly used in various types of medical equipment, such as physiotherapy devices and rehabilitation systems. The sensors can provide accurate and reliable measurements of muscle activity, which can be used to monitor a patient's progress during rehabilitation or to diagnose muscle-related medical conditions.
  • Video games: EMG Muscle Signal Sensors can also be used in the development of video games that rely on muscle activity for control. For example, games that involve physical activity or sports can use the sensors to detect the user's muscle activity and translate that into in-game actions.

Pin Connections:

Pin Description Connection
Vs+ Positive power supply Power Supply (Positive)
GND-BAT Ground Battery Ground (Battery)
Vs- Negative power supply Power Supply (Negative)
SIG Analog output Analog Output
GND Ground Ground

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Package Includes:

  • 1 x EMG Sensor
  • 1 x Professional EMG Cable
  • 3 x Disposable Surface Electrode

Sample Project:

Circuit:

  • Required Materials:

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  • Electrode Connection:
    • The three electrodes are used to transmit muscle signals. Each electrode must be in the proper position for better function.
  • Once you have decided which muscle to monitor, connect them as follows:
    • Green electrode: Place this electrode on the middle of the desired muscle
    • Red electrode: Place this electrode at the end of the desired muscle.
    • Yellow electrode: Place the last electrode on a bony or non-muscular part of the body near to the desired muscle.
  • Power Supply Connection: We use two power supplies or batteries to generate +Vs and -Vs. First connect the negative side of first battery to positive side of second battery, as shown below. This creates an electric ground for power supply. So, the positive side of first battery becomes +Vs and the negative end of the second battery becomes -Vs.
  • The following circuit shows how you should connect Arduino to EMG sensor. Connect wires accordingly.

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Library:

  • No external library is required for this module to work.

Code:

/*
    EMG-Muscular-Signal-Sensor
*/

void setup()
{
    Serial.begin(9600);
}

void loop()
{
    Serial.println(analogRead(A0));
}

We want to observe the changes in analog output signal of the module as the forearm muscle expands and contracts. To do this, open the Serial Plotter and see the output signal.

The image below shows the output changes.

EMG-Result

Notes:

  • One important note when using the EMG Muscle Signal Sensors Module Sensor Kit T084S is to ensure that the sensors are properly attached to the skin in order to get accurate readings. The sensors should be placed over the muscle of interest and secured firmly to the skin to minimize any movement or noise in the signal. Additionally, the skin should be clean and free of any lotions, oils, or other substances that can interfere with the signal.
  • It's also important to note that the EMG signal can be affected by factors such as fatigue, hydration level, and electrode placement. Therefore, it's important to carefully follow the instructions provided with the kit and to take any necessary steps to minimize these factors and ensure accurate measurements.

References:

https://electropeak.com/learn/interfacing-emg-muscular-signal-sensor-with-arduino/ https://ar.aliexpress.com/item/32910049034.html?gatewayAdapt=glo2ara