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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:
github.com/bit...
Links to parts and tools (affiliate links):
ESP8266 D1 Mini ($3.50): aliexpress.bit...
Flexible RGB LED Matrix ($12.20): aliexpress.bit...
AC to DC PSU with Barrel Jack: aliexpress.bit...
Small DC-DC Converter: aliexpress.bit...
Electrolytic Capacitors: aliexpress.bit...
Zener Diode Set ($4): aliexpress.bit...
Full Bridge Rectifiers: aliexpress.bit...
LED Projector ($72): aliexpress.bit...
My camera and lens (4k 60fps):
amazon.bitluni...
Zoom H6 Audio Recorder:
amazon.bitluni...
plz share :-)
Tindie store: www.tindie.com...
Github Sponsors: github.com/spo...
Patreon: / bitluni
Channel membership: / @bitluni
Paypal: paypal.me/bitluni
Dogecoin: DLhdK867hZCvuPqmpgviZqgfvUTdSiRfoU
bitclout: bitclout.com/u...
Twitter: @bitluni
reddit: u/bitluni
Discord: / discord
Music:
Jeremy Blake - Powerup!
Wayne Jones - Brain Trust
Quincas Moreira - Sparse Clouds
#electronics #maker #iot