Bellfire home automation project

This article provides you with an overview and links of all articles published around the Bellfire fireplace (Mertik Maxitrol controller) project that was presented during the Home Assistant Conference 2020.

Although this solution is presented around Home Assistant you can easily use the same solution in OpenHab, Domoticz or any other open home automation platform.


View Automate Everything! How to make your stupid device smart on Notist.

Introduction articles

The steps

Shopping list

  1. The ESPboard: ESP8266 board or ESP32 if you also want to use Bluetooth features on, Banggood, or
  2. The 4 channel relay board. Make sure you select the 5V version The relay: 5v relay board or Banggood
  3. If you don’t want to solder order:
    – Mini breadboards or Banggood
    – Dupont cables male-female or Banggood

Optional tools

Using Woonveilig / Egardia alarm with OpenHab using Node-Red

The above screenshots shows the flow in Node-red. The flow has following steps:

TIP: the flow is available for import at the end of this article.

1. Start flow every 20 seconds

2.  Do a webrequest to the woonveilig hub to get the current status

http://[YOUR WOONVEILIG IP/action/panelCondGet

3. Convert the responds to JSON

4. Check if the status of the alarm has changed if not exit the flow

The returned currentAlarmStatus variable has three values:

  • 0: the alarm is turned disabled
  • 1: the alarm is partial armed
  • 2: the alarm is armed

See code below

var currentAlarmStatus = context.get('currentAlarmStatus')||99;
var newAlarmStatus = msg.payload.forms.pcondform1.mode;
if(newAlarmStatus == currentAlarmStatus){
//node.warn("Same status of the alarm, Exit");
return null;

if (newAlarmStatus == "0") { //Off
return msg;
} else if (newAlarmStatus === "1") { //Partial Armed
return msg;
} else { //Armed
return msg;

5. Get the status of the Alarm in from OpenHab

6. Run function to compare currentAlarmStatus

Compare Woonveilig alarm status with the status of the alarm in OpenHab. If changed update global variable and continue, if no change exit flow.

var currentAlarmStatus = global.get('currentAlarmStatus');
node.warn("current alarm : " + currentAlarmStatus);

var ohAlarmStatus = msg.payload.state;
node.warn("OH alarm status : " + ohAlarmStatus);

if(ohAlarmStatus == currentAlarmStatus){
node.warn("Status in OH is same as alarm status, Exit");
return null;

msg.payload = currentAlarmStatus;

return msg;


7. Update alarm item in Openhab

Import following flow directly into Node-red

Copy and import the flow below into Node-Red, make sure you update your OpenHab instance and Woonveilig details.

[{"id":"96c97991.eeefe8","type":"inject","z":"fb8e5ae4.e53ae8","name":"Start Timer ","topic":"","payload":"","payloadType":"date","repeat":"20","crontab":"","once":false,"onceDelay":"","x":151,"y":152.99999904632568,"wires":[["ce82f7fb.ce0b08"]]},{"id":"ce82f7fb.ce0b08","type":"http request","z":"fb8e5ae4.e53ae8","name":"Get Alarm Status","method":"GET","ret":"txt","url":"","tls":"","x":171,"y":212.99999904632568,"wires":[["4cc27829.c6f228"]]},{"id":"4cc27829.c6f228","type":"json","z":"fb8e5ae4.e53ae8","name":"","property":"payload","action":"","pretty":false,"x":351,"y":212.99999904632568,"wires":[["b0eaca39.9416c8"]]},{"id":"e08a64c5.b4c9d8","type":"function","z":"fb8e5ae4.e53ae8","name":"Alarm status","func":"var currentAlarmStatus = global.get('currentAlarmStatus');\nnode.warn(\"current alarm : \" + currentAlarmStatus);\n\nvar ohAlarmStatus = msg.payload.state;\nnode.warn(\"OH alarm status : \" + ohAlarmStatus);\n\nif(ohAlarmStatus == currentAlarmStatus){\n node.warn(\"Status in OH is same as alarm status, Exit\");\n return null;\n}\n\nmsg.payload = currentAlarmStatus;\n\nreturn msg;","outputs":1,"noerr":0,"x":363.0000305175781,"y":332.0000047683716,"wires":[["e26d4b11.ee8228"]]},{"id":"b0eaca39.9416c8","type":"function","z":"fb8e5ae4.e53ae8","name":"Alarm status","func":"var currentAlarmStatus = context.get('currentAlarmStatus')||99;\nvar newAlarmStatus = msg.payload.forms.pcondform1.mode;\n//node.warn(currentAlarmStatus);\nif(newAlarmStatus == currentAlarmStatus){\n //node.warn(\"Same status of the alarm, Exit\");\n return null;\n}\n\ncontext.set('currentAlarmStatus',newAlarmStatus);\nif (newAlarmStatus == \"0\") { //Uit\n global.set('currentAlarmStatus',newAlarmStatus);\n // node.warn(\"new alarm 0\");\n return msg;\n} else if (newAlarmStatus === \"1\") { //Thuis\n global.set('currentAlarmStatus',newAlarmStatus);\n //node.warn(\"new alarm 1\");\n return msg;\n} else { //Aan\n //node.warn(\"new alarm overig\");\n global.set('currentAlarmStatus',newAlarmStatus);\n return msg;\n}","outputs":1,"noerr":0,"x":511,"y":212.99999904632568,"wires":[["f00db576.387518"]]},{"id":"e0560d60.8cc0f","type":"comment","z":"fb8e5ae4.e53ae8","name":"Check if Alarm status changed","info":"Check if alarm status changed, if not exit\n\n0: uit\n1: Thuis\n2: aan","x":561,"y":172.99999904632568,"wires":[]},{"id":"54de2a09.70ac34","type":"comment","z":"fb8e5ae4.e53ae8","name":"Check in OpenHab if alarm status need to be updated","info":"","x":493.0000915527344,"y":294.0000047683716,"wires":[]},{"id":"f00db576.387518","type":"openhab2-get","z":"fb8e5ae4.e53ae8","name":"","controller":"e263d712.1e7b38","itemname":"HO_Alarm_Status","x":170.1666717529297,"y":281.0000238418579,"wires":[["e08a64c5.b4c9d8"]]},{"id":"e26d4b11.ee8228","type":"openhab2-out","z":"fb8e5ae4.e53ae8","name":"","controller":"e263d712.1e7b38","itemname":"HO_Alarm_Status","topic":"ItemCommand","payload":"","x":551.1666870117188,"y":332.0000047683716,"wires":[[]]},{"id":"d08ad29f.6f20f","type":"comment","z":"fb8e5ae4.e53ae8","name":"........................Set alarm status from Woonveilig to Openhap........................","info":"Check if alarm status changed, if not exit\n\n0: uit\n1: Thuis\n2: aan","x":310,"y":112.00000286102295,"wires":[]},{"id":"e263d712.1e7b38","type":"openhab2-controller","z":"","name":"Openhab","protocol":"http","host":"localhost","port":"8080","path":"","username":"","password":""}]

My home automation setup

Let’s start with the first post about home automation.  I’m pretty happy with my current home automation setup.  In this post I would like to share my current setup as on June 2019. This will be a endless work in progress posts, updated with links to more in depth articles.

Before we start with home automation I want to make you aware of following statement.

You will get no compliments or praises for your Home Automation, the best recognition you will get are the complaints when it is not working.

My home automation history

For the last eight years I’ve been busy improving with home automations, also called domotica. The time that I invest divers strongly per period, sometimes I don’t do anything for months, and then I find a new technology and I go all in with my spare time. In these years a lot of I’ve used a lot of different technologies, brands and platforms for my smart home.

I recently switched from Domoticz to OpenHab as my main home automation platform. Domoticz has always worked perfect for me, the reason for me to change was mainly to try something new. I really like working with OpenHab, but the learning curve is steep and it a more technical oriented solution. So if you don’t have a technical background or you’re new to home automation I would advise you to start with Domoticz or Homey (no personal experience with Homey).

Continue reading “My home automation setup”

Install Node-Red on openHABian (openHABian PI)

Node-Red is available as an extension on Openhabian, this short post will explain you how to do this.

  1. Open Putty and start SSH session to your OpenHabian server. Login as with user Openhabian.
  2. Start the openHABian configuration tool

sudo openhabian-config

  1. In the openHABian configuration tool select Optional Components.
  2. In the optional components menu find NodeRED and press Enter. The installation of Node Red wil now start.
  3. Wait till the installation finalized and go to your browsers and visit your openHAB start page

Node-Red will now be available in the start menu.

You are now ready to go and to start with Node-Red!