Simcoe Diy Electronics

https://youtu.be/1diFaa5OsFg

Optical Fingerprint Reader Sensor Module Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fingerprint detection and verification super simple. These modules are typically used in safes - there's a high powered DSP chip that does the image rendering, calculation, feature-finding, and searching. Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, detect prints, hash, and search. You can also enroll new fingers directly - up to 162 fingerprints can be stored in the onboard FLASH memory. https://youtu.be/1diFaa5OsFg

Simple, and powerful!

Low-Cost Open-Source Ventilator-ish Device or PAPR https://youtu.be/n57u1NvXBgw For more detail, visite https://github.com/jcl5m1/ventilator