Made this system to detect your heartbeat through your laptop camera.
No oximeter. No heart rate sensor. No Apple Watch. Just camera.
We may use this to see if a person is lying, nervous, scared, etc. (Imagine an interviewer using this on you during online interviews lol).
Might as well use it as a lie detector on a video call through calculating changes in heart rate.
All are true. Most high achievers are people who work first and then optimize. They're not perfectionists either. Though sometimes these types of skills don't come out of the box for more of us. We have to teach ourselves to do. Be it going to the gym or programming or writing etc etc.
@misterrpink1@nikitabier My posting style changed and frequency too. I had personal life problems to wasn't posting that much. Who knows, maybe they'll change algorithm again lol.
The AI bubble is about to burst.
Your skills matter more than ever.
These are the best websites to learn core software engineering (updated 2026):
1. Boot .dev
2. FullStackOpen
3. CodeCrafters
4. roadmap .sh/backend
5. The Odin Project
6. RealWorld / Conduit
7. PostgreSQL Exercises
8. Exercism
Want to get into backend development?
- Build your own DNS
- Build your own BitTorrent
- Build your own Decentralized file system
- Build your own Interpreter
- Build your own kafka
- Build your won web scraper
- Build your own Redis
- Build your own Database Engine
- Build your own Distributed Job Queue
- Build your own Search Engine
- Build your own web server
- Build your own Reverse Proxy
- Build your own API gateway
- Build your own Load Balancer
- Build your own URL Shortener
- Build your own CDN
- Build your own Pub/Sub System
- Build your own Task Scheduler
- Build your own Email Service
- Build your own File Storage Service
- Build your own Logging System
- Build your own Metrics/Monitoring System
- Build your own Feature Flag System
- Build your own Payment Gateway Mock
- Build your own Rate Limiter
- Build your own Notification System
- Build your own WebSocket Server
- Build your own OAuth Server
- Build your own CI/CD Pipeline System