Geekcreit ECG/EKG/EMG Shield for Arduino – Bio-Feedback Sensor Kit with 3-Lead Cable and Disposable Electrodes

The Geekcreit ECG/EKG/EMG Shield is a powerful expansion module that opens the world of bio-feedback and medical instrumentation to Arduino enthusiasts and researchers. This shield allows your microcontroller to bridge the gap between human physiology and digital processing by capturing the subtle electrical potentials generated by the heart and muscles. Whether you are building a heart rate logger, a muscle-controlled robotic arm, or a gesture-recognition interface, this kit provides the industrial-grade precision needed for biological data acquisition. The shield works by converting complex analog differential signals from the body into a single stream of analog data that the Arduino’s ADC (Analog-to-Digital Converter) can easily process. To ensure accuracy, the board features a sophisticated amplification chain with a total gain of approximately 2848x, allowing even the smallest millivolt signals to be detected. The built-in 40Hz cutoff filter helps eliminate environmental noise, providing a stable waveform for software analysis and visualization. Designed for flexibility, the Geekcreit shield supports both standard passive electrodes and active electrode inputs. Its stackable design is a standout feature for advanced users, allowing multiple muscle groups or heart channels to be monitored simultaneously using pins A0 through A5. With its plug-and-play headers and pre-calibrated circuitry, this shield is an essential tool for students, hobbyists, and professional engineers exploring the frontiers of human-machine interaction.

Key Features:

Stackable Multi-Channel Design: Features stackable headers allowing up to 6 shields to be mounted on a single Arduino, enabling the creation of a 6-channel bio-signal monitoring system.

Integrated Signal Conditioning: Includes an onboard instrumental amplifier, a regulated gain stage, and a 3rd order "Besselworth" filter to ensure clean, high-quality analog signal output.

Precision Calibration System: Equipped with a high-accuracy trimmer potentiometer and a digital-to-analog calibration signal generator (D4/D9) for easy sensor fine-tuning.

Universal Arduino Compatibility: Works seamlessly with both 3.3V and 5V logic levels, making it compatible with Arduino Uno, Mega, Leonardo, and 32-bit boards like the DUE.

Complete Prototyping Kit: Comes as a full set including the bio-feedback shield, a high-quality 3-lead electrode cable, and medical-grade disposable snap-on electrodes for immediate use.