🥝 shraiwi

An ultra-low-power Bluetooth contact microphone for high-fidelity acoustic capture.

• 🔋 80dB SNR within a 2mW power budget.
• LMS-based compressor; 5:1 compression ratio, 10x real-time throughput for a 16-bit 40ksps audio stream.

Designed, built, tested, and coded eight iterations of a 1kW 60V brushless motor driver.

• Integrates three H-bridges, a MOSFET driver, a buck converter, and a µC in a two-layer, 20cm² board.
• Implements space vector pulse width modulation (SVPWM) motor commutation.

An open-source, smartphone-interoperable privacy-preserving contact tracing hardware device.

• 🌐 Cited by the European Telecommunications Standards Institute!
• 📄 arXiv whitepaper

A real-time 3D point-light localization system for volumetric displays, running on mid-range mobile hardware.

• Tracks 20 point light sources with centimeter-level accuracy at 30FPS.

A beautiful, simple sunrise lamp designed for college dorms. Made in less than 48 hours for the Horizons 2023 hackathon.

Prizes

• 🥇 Best Overall Prize
• 🥇 Physical Track 1st Prize

A drop-in replacement for a 555 timer based on the ATTiny85.

Featured on

• 📰 Hackaday Blog
• 🎧 Hackaday Podcast
• 📰 Hackster.io

An open-source, low-memory footprint decoder for the QOI format.

An interactive article to help people learn binary.

An accelerated FAST feature detector for the ESP32-S3 leveraging 128-bit SIMD instructions, achieving ~2x the performance of the reference implementation.