Magnetic Smart Lock with Secret Knock, IR Sensor, & Web App | ESP8266 & Espruino Project

Опубликовано: 23 Май 2026
на канале: Caleb Brewer

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In this project I build a magnetic lock for my home office, that opens if you know the secret knock. Oh… and it has a few more tricks up it’s sleeve too.
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Follow me: / calebrbrewer
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Espruino Code & Wiring Diagram: https://github.com/calebbrewer/secret...
Web App Code: https://codepen.io/calebbrewer/pen/cf...

3D Models
49mm Electromagnet Mounting Bracket: https://www.thingiverse.com/thing:318...
Sensor Cap/Cover: https://www.thingiverse.com/thing:320...
Project Box: https://www.thingiverse.com/thing:320...

Parts (Affiliate Links)
49mm Electromagnet: https://rover.ebay.com/rover/1/711-53...
Perfboard: https://rover.ebay.com/rover/1/711-53...
ESP8266 Dev Board: https://rover.ebay.com/rover/1/711-53...
N-Channel MOSFET: https://rover.ebay.com/rover/1/711-53...
Piezo Transducer: https://rover.ebay.com/rover/1/711-53...
IR Proximity Sensor (This is not the one I used, but I would get it & run it from the PSU): https://rover.ebay.com/rover/1/711-53...
Operational Amplifier Module: https://rover.ebay.com/rover/1/711-53...

Music: https://www.purple-planet.com