Capsicum | 🫑 A retrofitted wired audio doorbell with added WiFi connectivity 🔔

Downloads

Demo Code Schematic Layout ECAD KiCad files Gerber files Bill of Materials FreeCAD file Case STL

Features

Turn off door bell audio based on time of the day E.g. sleeping
Add a timeout so that repeated door bell rings are not annoying
Connect to WiFi and send a webhook to Zapier for future integrations
(Fail-safe) Works like a normal doorbell without WiFi
(Integration) Turn on a light signal when the door bell rings and the sound is off E.g. in a Zoom call
(Integration) Send a mobile notification

Getting Started

Step 1

Teardown

Look into the internals of an existing wired battery-powered doorbell from FUERS bought on AliExpress, priced below USD $4.00.

FUERS Wired Guest Welcome Doorbell High Quality Energy-saving Door bell Simple Generous Home Store Security Doorbell Button

Battery

It is powered by 2 AAA batteries (3V).

Power by 2 AAA batteries

Step 2

Chip

Chip TLX210924 is similar to TQ33E-11. It rings “Ding Dong” 2 times. It is a Music chip with a built-in transistor positive trigger and has 6 pinouts from the PCB.

Chip of the original doorbell