Hand Drawn QR Codes
A developer embarked on a delightful, analog challenge: hand-drawing a functional QR code on grid paper. This quirky project showcases the underlying mechanics of QR codes, from data capacity to error correction, in a surprisingly tangible way. It's a perfect blend of technical curiosity and creative execution, resonating with HN's appreciation for understanding digital systems from first principles.
The Lowdown
Seth Michael Larson documented his whimsical journey of hand-drawing a functional QR code on grid paper, turning a digital staple into a physical art project. Motivated by a new stationery find, he meticulously constructed a QR code, uncovering fascinating insights into its design and functionality along the way.
- Larson chose the smallest standard QR code, 'Version 1' (21x21 pixels), adapting it to a 10x10 grid sticky note by splitting squares.
- He initially faced a data length limitation for the URL
https://sethmlarson.devat the lowest error correction, opting forsethmlarson.devbefore learning that uppercase letters allow the full domain. - Using Python's
qrcodepackage, he generated a digital reference to guide his drawing process. - The creation involved drawing key features like 'position patterns' and 'timing lines' first, progressively filling in data pixels while testing scans.
- Notably, he discovered that even with a minor drawing error, the QR code remained scannable due to its built-in error correction.
- Despite initial scanning challenges with a curling paper, the final hand-drawn QR code successfully scanned when held flat or hung.
The project culminates in a functional, hand-crafted QR code, offering a tangible demonstration of digital encoding and encouraging others to explore similar grid-based creative endeavors.