Work in progress from Robin Cole on Hackster.io:
There are some pretty cool smart doorbells out there, but they are expensive and the basic components of a wireless button, camera and a small computer are cheap! In fact the most expensive component in this project is the camera module, which is still a bargain at sub 20 USD.
An overview of the system is shown in Figure 1. When someone pushes the doorbell button, the button module transmits a 433 MHz RF signal to a receiver (not show) which sounds a chime. However, the RF signal can be freely intercepted (not ideal for security but pretty convenient), and here an RF module attached to a Raspberry Pi is used to intercept the RF signal. On receiving the signal, the Pi takes an image using the camera. This image can then be sent as a mobile notification, for example using the Telegram app. In this project, I actually send the image to my home automation system, Home-assistant.
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Have an amazing project to share? Join the SHOW-AND-TELL every Wednesday night at 7:30pm ET on Google+ Hangouts.
Join us every Wednesday night at 8pm ET for Ask an Engineer!
Learn resistor values with Mho’s Resistance or get the best electronics calculator for engineers “Circuit Playground” – Adafruit’s Apps!
Maker Business — Adafruit interviews Dan Rasure, Managing Partner TechShop 2.0
Wearables — Simulate tattoos
Electronics — Heatsinks aren’t enough!
Biohacking — Getting More from Home DNA Testing
No comments yet.
Sorry, the comment form is closed at this time.