KozbenSal

Hardware

1 Devlogs
1 Total hours

I’m building KozbenSal — smart glasses that let paralyzed people control computers and draw using only eye movements.

The Problem: People with motor disabilities (ALS, cerebral palsy, spinal injuries) can’t use keyboards or mice. Existing eye-tracking solutions cost $10,000+.

The Solution:
KozbenSal uses a Raspberry Pi + camera to track eye movements in real-time. Users can:

Control mouse cursor by looking
Draw digital art with eyes
Click by blinking
Navigate applications hands-free

Tech Stack:

Hardware: Raspberry Pi 4, Pi Camera v2, 3D-printed frame (~$150 total)
Software: OpenCV + MediaPipe for eye tracking
Latency: <100ms response time
Calibration: 9-point personalized setup

@1 returned your funding request ? · 2 months ago

$120 S Tier

nice work on this! i dont see any hardware files in your repo! please add a .step of all the hardware used as well as some info in the readme on how assembly works. thanks!

Open comments for this post

@Ulagat on KozbenSal · 3 months ago

36m 25s logged

DEVLOG #1

Working on KozbenSal - eye-tracking assistive glasses for people with motor disabilities. Today I:

Fixed camera integration - PS3 Eye now captures reliably with DirectShow backend
Redesigned interaction - replaced slow dwell-time with fast blink-based point-to-point drawing
Improved accuracy - added hybrid pupil detection (MediaPipe + CV contour analysis)

System now lets users draw by blinking: first blink places point 1, second blink draws line to point 2. Much faster and more precise than the old system.
Next: user testing, threshold tuning, and adding keyboard mode for typing.