HOME GAMES APPS CODE DESIGNS ELECTRONICS DOWNLOADS LEGACY

PI-Talos

GOAL

A home security/monitoring system.

CONCEPT

Must record/live stream camera facing front door

Must work in the dark

Available to access remotely via the internet

Must have alarm functionality to output the video if triggers

Add noise, temperature and gas level sensors.

PURCHASES

Controller	Raspberry Pi 5 (8GB)	£76.80
Cooling system	Active cooler for Raspberry PI 5	£4.80
Cooling system	Raspberry Pi AI HAT+ (26 TOPS)	£101.90
Power	Raspberry Pi 27W USB-C Power Supply	£11.60
Camera	Arducam 1080P Day & Night Vision USB Camera for Computer, 2MP Automatic IR-Cut Switching	£39.95
Camera	USB Camera	£11.95

TOTAL		£247

IMPLEMENTATION

So I could have used a normal camera to do this and used the excellent Motion library, but I really wanted to use the AI Hat. I tried out the excellent FrigateNVR which had the built in support for the Hailo but it didn't quite do what I needed and I struggled to configure it. So I decided to create my own scripts to do what I wanted. Firstly I installed aiortc to turn the infared camera into a webcam. The script for this created a webserver to allow me to connect to in real time anywhere in the world. I modified this to create a record method. When called this would then create a 10 second video of the stream. I had an old low res camera and decided to use this as the "targetter" camera for use with the Hailo module. I modified the basicpipelines script to add a queued "Alert" detector which when a person was detected activated an alert pipeline. This saved the frame on the low res camera as a JPEG and called the record method of the aiortc webserver. This seemed to work well KY-038 Sound sensor KY-026 Flame Sensor