Smart Doorbell Bot for Less Than $10

Quick and easy project to automate the doorbell using "over the counter" modules and minimum to no soldering.

Main features:

1. Opens the gate/ door automatically when the bell rings

2. Activate and de-activate this feature remotely using Google Home*

*** This is a work-in-process Instructables - I'll add more details as I add the modules and package them together ***

Search the following components on AliExpress:

1. Sound Sensor Light Control Relay Switch Time Delay

2. DC 5V 433Mhz Sonoff WiFi Wireless Smart Switch Relay Module For Smart Home

1. Add an additional 2 layers of duct tape to completely block the light sensor. (The stock single-layer is not enough - you have add more!)

2. Set the light sensor to the minimum by turning the screw clockwise until you hear the click sound

3. Set the "delay"/ duration sensor to the minimum by turning the screw clockwise until you hear the click sound

4. There's a catch here: set the sound sensitivity to the minimum by turning the screw counter-clockwise until you hear the click sound

5. IMPORTANT: Make sure the shorting cap is unplugged if your power source is higher than 6V and have it plugged if your power source is lower than 6V.

6. Make sure you have the positive and negative power source plugged into the respective terminal

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Once the power is connected, you should see the red light switching on. Time to do the following adjustments.

A) Turn the sound sensor (4) clockwise to the desired level - clap or do some noise in the meantime but try not to wake up your neighbours in the meantime :)

B) Adjust the "delay"/ duration sensor (3) counterclockwise - this will determine how long the relay will be activated.