# Heimdall - Let Homey watch over your home

**URL:** <https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134>\
**Category:** Apps\
**Tags:** app, official, security, homey-pro:mini:shs, heimdall\
**Created:** [August 22, 2018, 1:41pm UTC](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134 "2018-08-22T13:41:20Z")\
**Posts on this page:** 1\
**Showing post:** 261

<div class="post-metadata">

**Author:** ![DaneedeKruyff](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/daneedekruyff/32/964_2.png) [@DaneedeKruyff](https://community.homey.app/u/DaneedeKruyff)\
**Post date:** [January 19, 2019, 3:31pm UTC](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134/261 "2019-01-19T15:31:18Z")

</div>

Next to the new functionality **[Writing to the Timeline](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134/247)** another new function is added to the app in the rewrite to make _ **Heimdall** _ compatible with Homey 2.0: **Check Last Communication**

This function checks when _Motion-_ and _Door/Window sensors_ that are included in the **Armed** and **Partially Armed**  **Surveillance Mode** have communicated with Homey last.

When the last communication has been longer than 24 hours ago _ **Heimdall** _ will do 3 things:

A line will be written to the **History** telling you that the sensors last communication was longer than 24 hours ago and when the last communication was received.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/a/a174fbefc3d9bcde2ca646a794c28f0ccd9f17f1.png)

A line will be written to the Timeline:

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/d/d8658ff2408522edadf9a65e5405366667a35e35.jpeg)  
Only when **A motion device hasn’t communicated** and/or **A contact device hasn’t communicated** in the **[WRITE TO TIMELINE](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134/247)** settings are enabled

The **No Information Received** flowcard will be triggered. This card has 4 tags: _Hours no information_, _Last update_, _Device_ and _Zone_. With these tags you can compose your own message to for example send a push notification.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/7/7bc6a52877d42c5d3fb78661cc0a415251513789.png)

The **Check Last Communication** function is automaticaly run when you set the **Surveillance Mode** to either **Armed** or **Partially Armed**. Do you want to make a flow so you can schedule the check to run at a specific time? You can do so by using the **Check Last Communication** action flowcard in a flow that you run at your desired time.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/2X/9/9c14b6eb4b268736b9d8a11ec1b4ac3268a9a1a1.jpeg)

---

_[View the full topic](https://community.homey.app/t/heimdall-let-homey-watch-over-your-home/134)._