HEGduino V2

by AlasKit

A flexible FNIRS and blood-flow biofeedback Kit

View all updates Jun 23, 2021


by Joshua Brewster

We made it to the other end friends. We’ve made our goal and we get to order a couple hundred devices to share with you all. We’ve made a few quality of life improvements to the device like some switches to swap the communication modes and put the device into deep sleep easier to save battery. Production will start immediately.

We’re continuing important work on our new open source software Brains@Play which will be the hub for accessible brain technologies as it continues to take shape. We are still breaking it occasionally as we add a ton of important features, we are planning a more formal release within a month or two, before you receive your devices.

Going forward we have a exciting plans to continue to build a community around HEG & FNIRS and its important implications in the mental health world. We’re excited to lead the charge in open, affordable, and innovative biofeedback technologies!

This is a small project and your support makes it directly possible, so thank you so much!

About the Author

Joshua Brewster

moothyknight  ·   Fairbanks, AK

$7,578 raised

of $7,500 goal

101% Funded! Order Below

Product Choices


MAX86141 FNIRS Breakout Board

Get the breakout board for the MAX86141 FNIRS sensor, which doubles as a foldable pulse ox. The sensor requires a SPI interface and 3.3V-5V power from a microcontroller. Comes with male and female pin headers and a free Arduino library.


Mounted FNIRS sensor with headband

Get the new low cost HEG headset with the MAX86141 sensor and ESP32 microcontroller, mounted in a handmade wire and fabric headset. The biofeedback software is free and will be receiving feature support for the foreseeable future. Battery not included.



We are a ragtag team of engineers and optimists trying to make a difference in this cold, dark place called Alaska.

Joshua Brewster

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