Biofeedback Butterfly Beats With a Pulse
A new biofeedback device designed by Mariia Hruntes uses a 3D printed butterfly to visualize the user's heartbeat. The device employs a MAX30102 pulse oximetry sensor connected to an Arduino Uno to control the butterfly's wing flapping in sync with the user's pulse. This innovative approach aims to help users relax by consciously slowing their heartbeat through observation and mental focus.
- ▪The biofeedback device tracks the user's heartbeat using a MAX30102 pulse oximetry sensor.
- ▪It is connected to an Arduino Uno that actuates a micro servo to flap the wings of a 3D printed butterfly.
- ▪The goal is to help users calm themselves and slow the flapping of the butterfly's wings through mental focus.
Opening excerpt (first ~120 words) tap to expand
Biofeedback Butterfly Beats With A Pulse No comments by: Zoe Skyforest May 19, 2026 Title: Copy Short Link: Copy Biofeedback is the idea of making one conscious of a biological process or feature, and then using this to try and exert control over the very same. [Mariia Hruntes] demonstrates this ably with a fluttering build of her own design. In this case, the biological process being made clear is that of the user’s heartbeat. This is tracked with a MAX30102 pulse oximetry sensor, which can be used to measure both heart rate and blood oxygen levels if so desired. It’s hooked up to an Arduino Uno, which polls for pulse rate data, and then actuates an SG90 micro servo in turn. This operates the wings of a 3D printed butterfly, such that they flap in pace with the wearer’s pulse.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Hackaday.
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