Crowd Supply WallySci E3K Bio-Sensing Platform

Crowd Supply WallySci E3K Bio-Sensing Platform provides an affordable, fully open-source, wireless framework for an intuitive understanding of bio-signals originated from the human heart, muscle, and brain. The E3K is designed to get anyone working with bio-signal acquisition right out-of-the-box, while also allowing for complete customization.

The Crowd Supply WallySci E3K Bio-Sensing Platform features a modular design, enabling complete customization. The platform consists of the following modules:

Wi-Fi® and BLUETOOTH® Low Energy (BLE) enabled Data Communication and Processing Unit (DCPU)
Electromyography (EMG) Sensor to capture muscle movements
Electrocardiography (ECG) Sensor to capture heart signals
Electroencephalography (EEG) Sensor to capture brain activity
9-DoF Inertial Measurement Unit (IMU) to capture motion

Users can use the modules they need, in the configuration they need them, or they can add their own modules.

DCPU

The Data Communication and Processing Unit (DCPU) of the E3K Platform utilizes the Espressif Systems ESP32-WROOM-32D, which is a compact but powerful dual-core microcontroller integrated with Wi-Fi and Bluetooth, making it ideal for IoT and related projects. The board is packed with 10 GPIO, 6 analog inputs, 2 analog outputs, and supports various communication protocols, including SPI, I²C, and UART. The board also includes a USB to Serial converter, which allows it to be easily programmed and communicate with a computer. In addition to USB, it can be powered through a lithium-polymer (LiPo) battery, making it portable. User push buttons and LEDs are also provided for feedback.

Software

The E3K Graphic User Interface (GUI) allows users to configure each channel and collect data without requiring any coding. For advanced users, the E3K can be programmed either by using Arduino IDE or Espressif IDF. Arduino libraries and Python APIs allow the E3K Platform to be integrated into custom projects.

Features

DCPU Module
- Espressif Systems ESP32-WROOM-32
- 1Hz to 2000Hz sampling rate
- 6x 12-bit analog ports
- 10x GPIO
- 2x 8-bit DAC
- Communications
  - Wi-Fi: 802.11 b/g/n
  - Bluetooth: 2 BR/EDR and BLE
  - USB 2.0
- 2x user LEDs, 2x user push-buttons
- 3V to 6V supply voltage
EMG Sensor Module
- 3-lead electrode cable operation
- 7V to 5V supply voltage
- 1920dB gain
- ±0.8mV (with 3V) range
- 50Hz to 2500Hz bandwidth
- 90dB CMRR
- 8GΩ input impedance
- Raw and integrated data output
- 5mm electrode cable jack

ECG and EEG Sensor Modules
- 3-lead electrode cable operation
- 7V to 5V supply voltage
- 880dB to 8800dB gain
- ±0.18mV – ±1.87mV (with 3V) range
- 1Hz to 130Hz bandwidth
- 90dB CMRR
- 8GΩ input impedance
IMU Module
- 12-bit accelerometer with a range of ±8g
- 16-bit gyroscope with a range of ±2000° per second
- Triaxial geomagnetic sensor
- Two additional Qwiic connection ports
- Data output
  - I²C (default) up to 400kHz
  - SPI up to 3MHz
  - UART up to 3Mbps
- 0.35m/s² linear acceleration accuracy
- 0.3m/s²accelerometer accuracy
- 3.1°/sec gyroscope accuracy
- 1.4µT magnetometer accuracy
- 1.65V to 3.6V supply voltage

Applications

Biomedical and IoT projects
Real-time data acquisition
Muscle health and fatigue measurement
Cardiac activity monitors
Motion tracking

Fitness trackers
Activity monitoring
Robotics and cybernetics
Physiology studies
Biofeedback

Kit Contents

1x DCPU Module
1x EEG Module
1x ECG Module
1x EMG Module

1x IMU Module
1x Electrode Cable
5x Electrode Pads

Datasheets

DCPU Module Datasheet
EMG Module Datasheet

EMG and EEG Module Datasheet
IMU Module Datasheet

Crowd Supply WallySci E3K Bio-Sensing Platform

DCPU

Software

Features

Applications

Kit Contents

Datasheets

Videos

DCPU Module Pinout

EMG Module Pinout

ECG & EEG Module Pinout

IMU Module Pinout

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