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Bio Sensing


An affordable, open source all-in-one bio-sensing platform

$13,386 raised

of $4,000 goal

334% Funded! Order Below

Funding ended on Nov 20, 2020 at 03:59 PM PST.

Recent Updates

You'll be notified about news and stock updates for this project.

E3K aims at providing an affordable, fully open-source, wireless framework for an intuitive understanding of bio-signals originated from the human heart, muscle, and brain. The platform consists of the following modules:

These modules, combined with our firmware and data collection software, enable a reliable and high rate of data acquisition at an affordable price-point.

Plug-N-Play! Yet Hackable

E3K is designed to get anyone working with bio-signal acquisition right out-of-the-box, while also allowing for complete customization.


The E3K GUI allows you to configure each channel and collect data without requiring any coding. But for advanced users, it can be programmed either by using Arduino IDE or Espressif IDF. We are developing Arduino libraries and Python APIs so that anyone can integrate the E3K platform into their own projects. These codes, along with the hardware schematics, will be shared on our GitHub repo once the campaign concludes.


Modularity naturally allows you to configure E3K into the bio-signal acquisition tool that you need. Use the modules you need, in the configuration you need them. Or you can add your own modules!

E3K supports widely used communication protocols like UART, I²C, and SPI and provides 10 GPIO pins, 6 analog pins, and 2 DACs. So you can easily develop your own hardware directly on top of the system. All the ports in E3K are based on Commercial Off-The-Shelf (COTS) connectors, which are pre-soldered on the boards. There’s no need to worry about uncommon or proprietary equipment. A couple pushbuttons and LEDs are also provided for feedback.

For additional ease-of-use, the power management system in the DCPU allows dual-mode of operation - either via USB power or a battery - in addition to supporting battery charging. The power source can even be changed while in use, seamlessly switching from battery to USB power and vice-versa.

Practical Bio-sensing in Education and Research

E3K is very useful to students and researchers as a base to build a biological project around. Using our interactive Graphical User Interface (GUI), students can instantly visualize the signals, thus enhancing their understanding. Using our open source data acquisition software, researchers can collect and process the data with ease. The supreme Signal-to-Noise Ratio (SNR) and affordable price will enable them to build their own unique solution. E3K is an ideal solution for just about anyone working on their next healthcare or wearable device.


Data Communication and Processing Unit (DCPU):

DCPU Pinout

ESP32 Dev Kit:

ESP32 Pinout

EMG Bio-sensor:

EMG Biosensor Pinout

ECG & EEG Bio-sensor:

ECG & EEG Biosensor Pinout

IMU Sensor:

IMU Pinout


WallySci E3K OpenBCI Cyton boardBitalino Plugged Kit BLEProtoCentral HealthyPi v4Shimmer Sensing Shimmer3
Open sourceHardware and software Hardware and software Only Software Hardware and software No
CPUESP32 - Xtensa dual-core 32-bit LX6 microprocessor, up to 240 MHz clock PIC32 microcontroller (50 MHz) Atmega328 ESP32 - Xtensa dual-core 32-bit LX6 microprocessor, up to 240 MHz clock MSP430 CPU (24 MHz)
Program memory16 MB Flash 256 KB Flash 32 KB Flash 4 MB Flash Not known
RAM520 KB RAM 64 KB SRAM 2 KB SRAM 520 KB RAM Not known
ECGYes Yes Yes YesYes
EMGYes Yes Yes No Yes
EEGYes Yes Yes No No
9-DoF IMUYes No No No Yes
Number of channels6 8 / 16 6 NA 15
Wireless compatibleWi-Fi: 802.11 b/g/n + Bluetooth: v4.2 BR/EDR and BL Bluetooth v4.0 Bluetooth v4.1 on-board Wi-Fi and BLE Bluetooth
Other communicationUSB, QwiiC, I²C, SPI None None None None
Power sourceLiPo battery with on-board USB charging 4 AA battery LiPo battery with on-board USB charging LiPo battery with on-board USB charging Rechargeable LiPo
Firmware updateThrough Arduino IDE via micro USB Through Atmel Studio via FTDI Through Atmel Studio via FTDI Through Arduino IDE via micro USB N/A
Python APIYes YesYes No No
Generic connectorsYes Yes No Yes No
Hardware price$159 $500 - $950 $225 $249 ~$2500
FDA approvedNo No No No Yes

Open Source Platform Encourages Innovation

The E3K platform is completely open source. At its core, E3K is designed to enable hassle-free data acquisition, so it can be easily adapted and expanded into other bio-sensing projects or experimental set-ups. You can add other sensors or incorporate E3K into an existing bio-sensing project to develop the platform for a wide range of applications. In these difficult times, when the entire world is affected by COVID-19 pandemic, users can build innovative solutions with E3K for self-monitoring.

Support & Documentation

All the software and hardware files, including GUI, firmware, APIs, and PCB files, will be made available via the GitHub repository. Furthermore, a user manual, datasheets, and a few example projects using the E3K platform will be provided.

Manufacturing Plan

Our device has three parts which are dependent on external factors:

For each of the parts, we have already identified the respective companies that can provide them. The sourcing of all the components will be done through Mouser, TI, Digi-Key and Element14. We have identified a PCB fabrication and assembling company in India. We have used their services throughout our prototyping phase. The quality is excellent and they have capability to handle production quantity. Moreover, we have identified a few other alternative companies in India that will be able to deliver quickly while maintaining quality standards.

Fulfillment & Logistics

Once we verify quality and test the functionality of each module, items will be shipped to Crowd Supply. From there on, Crowd Supply will manage the shipment to individual backers. The USA orders will be delivered free of charge. For all international (non-US) orders, there is a fixed surcharge. To know more about ordering, paying, and shipping please visit this Guide page.

Risks & Challenges

As mentioned earlier, we have already tested the quality of service provided by our vendors and have identified a few alternatives, just in case. Lockdown in India due to COVID-19 pandemic has ended and our PCB fabrication and assembly vendor is back to full-time production. However, we are still facing some delays in the shipment of components. We have attempted to compensate for these shortages in our estimated shipping timeframe, but any unforeseen delay will be promptly communicated via campaign updates.


Although the E3K platform has some of the features of a medical device, it does NOT have any certifications (FDA, CE, IEC, etc.) and is NOT officially approved for medical or diagnostic use. It is your responsibility to ensure your safety when using the device. Furthermore, you should never power the device from a non-isolated power source.

In the Press

Produced by WallySci in Gurugram, Haryana, India.

Sold and shipped by Crowd Supply.

E3K Combo

The E3K Combo is the full set of modules: One Wi-Fi and BLE-enabled Data Communication and Processing Unit (DCPU) with ESP32-DevKitC-32E, one EMG sensor, two ECG/EEG sensors, and one IMU sensor. The Combo also comes with one electrode cable and five electrode pads.

$159 $8 US Shipping / $18 Worldwide

Want to buy this item? Check the current project page for the latest information.


One Wi-Fi and BLE-enabled Data Communication and Processing Unit (DCPU), with ESP32-DevKitC-32E module included.

$39 $8 US Shipping / $18 Worldwide

Want to buy this item? Check the current project page for the latest information.

E3K Bio Sensor: EMG

One electromyography (EMG) sensor - to capture muscle movements.

$34 $8 US Shipping / $18 Worldwide

Want to buy this item? Check the current project page for the latest information.

E3K Bio Sensor: ECG/EEG

One bio sensor that can be used as an electroencephalography (EEG) sensor - to capture brain activity, or as an electrocardiography (ECG) sensor - to capture heart signals.

$34 $8 US Shipping / $18 Worldwide

Want to buy this item? Check the current project page for the latest information.

E3K Motion Sensor (IMU)

One E3K Motion Sensor (IMU).

$34 $8 US Shipping / $18 Worldwide

Want to buy this item? Check the current project page for the latest information.

About the Team


Gurugram, Haryana, India  ·

WallySci is committed to fostering an environment for hands-on exploration at the interface of computer science, robotics, and bioengineering. E3K is especially designed for students and researchers, the robust, high-performance sensors provide an opportunity for rapid prototyping of hacker devices and unconstrained scientific quest. "Seriously Quirky Bio-sensing"

Varan Gupta


Sanjeev Thukral

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