Project Hub /Healthcare Biomedical & Assistive/Assistive & Prosthetic Tech/Wireless EMG Controlled Prosthetic Hand

Intermediate

ARDUINO

Project Specific

6 – 12 Hours

Partial Kit

Wireless EMG Controlled Prosthetic Hand

Learn how to design a wireless prosthetic hand that replicates natural hand movements and muscle contractions using EMG signals.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

ESP32 WiFi+Bluetooth CP2102 Development Board Rs. 520.00
TowerPro SG90 Mini Servo – 180 degree Rotation – Standard Quality Rs. 179.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: Arduino Leonardo / Micro
ECG / EMG / EEG Sensor
Vibration / Haptic / Misc actuator

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How It Works

The Wireless EMG Controlled Prosthetic Hand system captures electrical signals generated by muscle contractions using an EMG sensor attached to the user's skin. These analog voltage signals, which fluctuate depending on muscle tension, are read by the Arduino Pro Micro microcontroller. The Arduino processes the incoming analog data, translating specific muscle activation thresholds into corresponding digital control commands. These commands are then transmitted wirelessly via an HC-05 Bluetooth module to coordinate movement across the system, or processed locally to drive servo motors housed within the InMoov robotic arm parts. When the user flexes their muscle, the sensor detects the electrical activity, prompting the Arduino to generate Pulse Width Modulation (PWM) signals that dictate the precise rotation angles of the servo motors. Because the servos are mechanically linked to the fingers of the prosthetic hand, their rotation pulls cables or joints to open and close the hand, effectively replicating natural human grip movements based on real-time bioelectric feedback.

Why Build This

Gain practical experience in biomedical signal processing by integrating biological sensor inputs with microcontroller logic.

Explore advanced mechanical actuation and wireless communication protocols suited for assistive technology applications.

Develop a functional prototype that bridges the gap between undergraduate engineering theory and real-world prosthetic devices.

Real-World Application

Assisting physically challenged individuals by providing a functional, muscle-controlled prosthetic limb.

Skills You'll Learn

Biomedical signal acquisition

Microcontroller analog-to-digital conversion

Servo motor control and PWM generation

Wireless serial communication via Bluetooth

Electromechanical assembly

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Frequently Asked Questions

Do I need any special medical training to use the EMG sensor safely?

No, the EMG sensor operates on safe, low-voltage direct current designed for surface-level muscle activity detection and does not require medical expertise to set up.

Can the Bluetooth module be omitted if I only want wired operation?

Yes, while the HC-05 module enables wireless telemetry and control, the Arduino Pro Micro can process the EMG data and drive the servos locally through direct wired connections.

How do I power the servo motors without overloading the Arduino?

Servo motors draw significant current during movement and should be powered by an external power supply of appropriate voltage, sharing a common ground with the Arduino to ensure stable signal reference.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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