QRTape – Audio Playback from Paper Tape with Computer Vision
Summary
QRTape describes a DIY system that encodes audio data as a strip of QR codes printed on paper, read by a webcam, and decoded back into audio using Opus compression. The project substitutes a simple cardboard tape transport and an Arduino-driven mechanism for playback, and relies on open-source tools (ZBar, qrtape) with a pipeline that preserves data integrity via chunking, checksums, and CRCs.