ArduinoSmartDoorbell

An Arduino MKR1000 WiFi Smart Doorbell (based on standard dutch doorbell installation)

Why?

• As fun project. To learn Arduino, electronics, programming, git etc.
• Current Smart Doorbells are expensive, have limitations and are often subscription based
• Don't want to change the current, standard doorbell installation too much
• Expand with an IP Camera wich does double duty for security

User Requirements

• Use a button to ring the bell
• Detect the use of the button (and communicate it into the network for home automation)
• No internet dependancy (so no cloud services)
• Inexpensive hardware
• Keep it simple
• Optional: Ring the chime remotely
• Optional: Control an outdoor light

Current installation

8V DC - Doorbell button - Chime

Platform Options

ESP Arduino Particle etc. Chosen: Arduino MKR1000 WiFi. Others would work too I guess...

Considirations

• The doorbell circuit is a different voltage then the Arduino
• Considering location, flexibility and performance WiFi is the connection of choise (instead of Ethernet, BTLE, LoRa, GSM)
• The doorbell circuit
• I know very little about electronics

Solutions

1. Arduino MKR1000 + relay + optocoupler

Description Use an optocoupler to detect the use of the button. Use the relay to controll the chime remotely (connected in parallel).

Pro

• Doorbell function remains totally independant of the arduino's avalability Con
• More components
• Complex

2. Arduino MRK1000 + relay

Description Connect the doorbell button to the digital I/O of the arduino. Use relay to ring the chime locally and remotely.

Pro

• Most simple solution Con
• Doorbell functionality depends on arduino availability.