# Home Security Alarm

**URL:** https://discourse.nodered.org/t/home-security-alarm/7936
**Category:** General
**Created:** [13 February 2019 15:23 UTC](https://discourse.nodered.org/t/home-security-alarm/7936 "2019-02-13T15:23:02Z")
**Posts on this page:** 1
**Showing post:** 9

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### Author: ![dynamicdave](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dynamicdave/32/96_2.png) [@dynamicdave](https://discourse.nodered.org/u/dynamicdave)
#### Post date: [14 February 2019 10:17 UTC](https://discourse.nodered.org/t/home-security-alarm/7936/9 "2019-02-14T10:17:14Z")

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You might want to take a look at this project I created for my IoT students.  
I reckon you could modify it to match your needs.  
It uses a Wemos D1 Mini to handle the IR side of things and then send an MQTT message to RPi-3+ running Node-RED.  
I've used Telegram to send messages to my mobile phone as the implementation is very easy.

Cheers from David.

> [@IR Detector - the project that grew and grew](https://discourse.nodered.org/t/ir-detector-the-project-that-grew-and-grew/4738):
>
> [The project that 'grew and grew'.](http://resources-area.co.uk/node-red-flows/it_grew_and_grew.pdf) Here's a link to an instruction sheet, for my IoT students, on how to interface an InfraRed (IR) detector to a WeMos D1 Mini.. Note: This exercise uses a WeMos D1 Mini, Node-RED and MQTT (mosquitto) and of course an IR detector. The project grew into using a RPi-camera to FTP images to a server and a dashboard to display those images. I hope you enjoy reading this as much as I enjoyed writing it. Regards from David.

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