• 1
    Step 1

    We love smart doorbells! We had a lot of fun making the smart doorbell project last February (link) and it seems the community loved it too (15k views wow!). Today we bring our famous doorbell to the next level, combining the features of the knock doorbell project from 2 years ago (we told you, we REALLY love smart doorbells!) with other cool features that you can mix with your Prota smart hub.


    • Knocking-triggered doorbell via a sound sensor
    • Old webcam used to take a picture of the guest
    • A recorded message ask the guest to wait
    • Host is warned by a Telegram message of the arrival of a guest with the snapshot
    • Host can reply with pre-recorded messages
    • Host can open remotely the door by pressing a button
    • All user actions can be voice-triggered with Amazon Alexa, Siri or Google Voice


    • Disabled persons with limited motricity
    • Tech enthusiasts who want to discover more about smart home and automation by doing themselves
    • Experienced makers who want to discover an adaptable and easy-to-use solution to avoid hours of coding (all can be set up in 1 hour!)
    • DIY project aficionados who can discover a different and exciting side of DIY

    All can be done in 1 hour, with not a single tech skills (we explain everything!) and for only $50! We make our best to create projects that are simple to read and understand and easy to replicate, while being adaptable to what you have at home or what are your favorite options.


  • 2
    Step 2



    • Raspberry Pi 2 or 3 // ~$25-$35
    • 16Gb SD card // ~$9
    • 1 paper cup 1 sound sensor // ~$2
    • 3 jumper wires Any speaker with AUX cable
    • An old webcam An old USB plug
    • 1 MicroBot Push // ~$49 ( link)
    • Optional: Amazon Alexa and/or a smartphone with Siri or Google Assistant
  • 3
    Step 3


    You first need to build the smart hub that will control the automation of your ring bell and connect all devices together. Prota OS for Raspberry Pi is our free smart hub OS which is very easy to install. In no time you will turn your Raspberry Pi into a smart home automation hub!

    You can download Prota OS here . Then burn it on the SD card.
    We made an easy guide you can follow to set up your Prota Pi.

    Alternatively, you can check this Instructables .