In this video we upgrade a basic doorbell to send notifications over WiFi. With some power harvesting no battery is required. An optional Node-RED server translates the signal and activates a visual notification remotely. This not only helps if the bell isn't audible but can also be use for hearing disabled people.

Code and Noder-RED flow can be found here:
https://github.com/bitluni/Doorbell

Links to parts and tools (affiliate links):
ESP8266 D1 Mini ($3.50): https://aliexpress.bitluni.net/d1mini
Flexible RGB LED Matrix ($12.20): https://aliexpress.bitluni.net/flexRGB
AC to DC PSU with Barrel Jack: https://aliexpress.bitluni.net/ACtoDC...
Small DC-DC Converter: https://aliexpress.bitluni.net/smallD...
Electrolytic Capacitors: https://aliexpress.bitluni.net/elco
Zener Diode Set ($4): https://aliexpress.bitluni.net/zener
Full Bridge Rectifiers: https://aliexpress.bitluni.net/fbr

LED Projector ($72): https://aliexpress.bitluni.net/projector

My camera and lens (4k 60fps):
https://amazon.bitluni.net/gh5
Zoom H6 Audio Recorder:
https://amazon.bitluni.net/h6

plz share :-)

Tindie store: https://www.tindie.com/stores/bitluni
Github Sponsors: https://github.com/sponsors/bitluni
Patreon:   / bitluni  
Channel membership:    / @bitlunislab  
Paypal: https://paypal.me/bitluni
Dogecoin: DLhdK867hZCvuPqmpgviZqgfvUTdSiRfoU
bitclout: https://bitclout.com/u/bitluni

Twitter: @bitluni
reddit: u/bitluni
Discord:   / discord  

Music:
Jeremy Blake - Powerup!
Wayne Jones - Brain Trust
Quincas Moreira - Sparse Clouds

#electronics #maker #iot