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FlexSense
AI Yoga Mat Trainer based on nRF52840
Embedded pressure-sensing yoga mat that detects alignment errors via 256-point capacitive sensing.
Pose Accuracy
91%
Sensor Points
256
FlexSense
Client
A connected fitness startup creating a smart yoga mat that provides real-time audio pose correction without a camera or external device.
Challenge
Detecting foot and hand placement on a flexible 183cmx61cm mat with sufficient resolution to infer pose quality, using only an embedded MCU.
Product Concept & Architecture
The mat contains a 16x16 capacitive pressure sensor matrix woven into conductive fabric layers. The Nordic nRF52840 scans the matrix at 30fps via a custom analog front-end. A DRV2605 haptic driver provides localized vibration feedback, while BLE audio streams correction cues to wireless earbuds.
Engineering Solution
The firmware processes the 256-point pressure map through a two-stage pipeline: first, a random forest classifier identifies the pose (downward dog, warrior I, etc.) in under 50ms. Then a rule-based geometry checker compares the user's pressure centroid distribution against an ideal template and identifies specific misalignments. Haptic buzzers at the mat corners guide placement corrections.
Result
91% pose identification accuracy across 20 standard yoga poses. Zero camera or wearable needed. FDA-listed as a Class I wellness device.
Deep Tech FAQ
What makes the AI Yoga Mat Trainer based on nRF52840 unique?+
The AI Yoga Mat Trainer based on nRF52840 leverages custom hardware and edge AI to deliver industry-leading performance and efficiency.
What are the core technical benefits?+
Key benefits include low power consumption, real-time processing, robust connectivity, and a compact form factor tailored for deployment.
Can this architecture be adapted for other use cases?+
Absolutely. The underlying methodology is modular and can be retargeted for various applications with minimal redesign.
Project Profile
Services Delivered
Hardware DesignEmbedded Software
Core Technologies
BLETinyMLRTOS
Silicon & Vendors
NordicSTMicroelectronics
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