of Raspberry Pi Pico W has proven to be a low-cost, low-power option for users looking to implement network support in a variety of microelectronics projects. Mauricio Pessoa’s Raspberry Pi today is an example. Pico W doorbell A system that uses Telegram to notify users when their doorbell rings.
This project is perfect for hearing impaired users or those who need visual notification of doorbell alerts. Pico W connects to Wi-Fi and uses a bot to send notifications to his Telegram. Notification messages can be sent either to individual users or to designated group chats.
According to Pessoa, plans are underway to share details of the hardware configuration. That said, we can infer a little from the photos he has shared so far.The prototype system shows the Pico W connected to the prototype board and breadboard. It is USB powered and also includes a button for input.
Doorbells use a 5V signal, while Pico W relies on 3.3V for power. For this reason, a PC817 optocoupler and a 185 ohm resistor are required so that the doorbell data can be safely relayed to the Pico W before sending telegram notifications over Wi-Fi. The Pico W doorbell code was written from scratch by Pessoa just for the project. Developed in Thonny IDE and written in MicroPython.
Pessoa decided to make the project fully open source. Github For those who want to look up the code. It is responsible for both connecting Pico W to Wi-Fi and interacting with the Telegram bot to receive notifications. There are other ways to send notifications from Pico W. MQTT protocol Or from IFTTT to Twitter.
If you want to reproduce this raspberry pi project,check out Pico W doorbell See the project page on GitHub for a breakdown of how it works together. Follow Maurício Pessoa for more cool Pi projects and future updates on this project.
