Raspberry Pi becomes a doorbell that sends Telegram notifications

The mini computers produced by Raspberry never cease to amaze. Their highly reprogrammable nature allows passionate and expert users of both electronics and programming to carry out projects of all kinds, and this is precisely the case with this Raspberry Pi Pico W functioning as a doorbell capable of sending Telegram notifications when it is rung. The idea is by Maurício Pessoa and is designed for people with hearing difficulties or who need a visual signal.

The device, based on the Pico W, is able to use the integrated Wi-Fi to connect to internet and send notifications on Telegram through a bot. Notifications can be sent to both individual contacts and groups. The details regarding the hardware configuration used have not yet been disclosed, from the shared images it is however possible to note that the device uses a Pico W card connected to a breadboard and is powered through a USB port, also including the button to play the doorbell.



Source: Maurício Pessoa
As with almost all the projects carried out with Raspberry systems, the doorbell made by Pessoa is open source and is available to everyone on the GitHub platform. Among the most recent projects that we have talked about previously, there are also an automated system capable of unlocking the locks via the face lock and an additional card capable of transforming the Raspberry Pi into a DIY router.