My HGI80 equivalent Domoticz setup without HGI80

[smar]

Hi @dty

I haven't been able to get "sending" working with your firmware running on an arduino nano (using @petep's nano files). Receiving works absolutely fine. I've tried various baud rates from 78600 all the way to 250000, but still nothing on the send. As soon as I install @petep's fifo branch, sending works immediately.

However, pete's fifo branch does not seem to receive anything from my HCC80 ufh controller, whereas your firmware immediately receives heat demand data from the HCC80 (including the different zones being controlled by the HCC80).

Do you have any suggestions of things I could try to get sending working with your firmware? Unfortunately I don't know enough about how the radio system works to make a guess as to what to tweak etc.

TIA.

[ukhauk]

Doing some research could it be that level shifting is required between the 5v Nano and the 3.3v CC1101 ? have a look at this diagram on Simon Monks github https://github.com/simonmonk/CC1101_arduino

some folks saying its necessary which I could see being an issue

[smar]

Thanks for the headsup on this. I'll look into it further when I get a bit more time.

[MaikelK]

No, I'm running on an Arduino. Heat demand readout is given directly by the python script, but I do use openHAB (another home automation system, similar idea to Domoticz) to log/graph the data, and also for controlling specific evohome events, such as turning heating off when no one at home for an extended period of time etc. As the data is being published onto MQTT, you should be able to use it with almost any home automation system.

Hi smar,

Would you be able to share your full code and which arduino and c1101 units you used including how you wired it?

I ordered an Arduino Nano and C1101 unit(the green square one on aliexpress) and would love to get this running.

Heating season has started again and i want to know which zone is doing what, maybe we can reduce our gas usage a little!

I have no good skills in coding unfortunatly!

Thanks!

Ps: i didnt recieved any notifications so i hope i Will get them now!

[MaikelK]

Hi smar,

Would you be able to share your full code and which arduino and c1101 units you used including how you wired it?

I have it wired up, and think i did it correctly.
But now the hardest part for me, installing the firmware to get stuff running.

Hopefully someone can help me with this.

[minthemerciless]

Hi all,

I haven't posted here but have been reading this thread for quite a while. If I'm asking in the wrong place, feel free to redirect me, but this seems like a good source of knowledge. I currently have a HGI80 connected to a Raspberry Pi successfully reading data from a WiFi Evohome controller and associated other components through Node Red. What I cannot, for the life of me, get working is transmitting data and getting a response from the controller or other components. Is there a know issue here that I have missed, i.e. is it even possible. I have proved that my data is transmitted over serial to the HGI80 but have no way of proving the HGI80 is transmitting anything. Any info would be very appreciated.

[DanD]

@minthemerciless,

I haven't messed much with Node Red, so can't tell you specifically where you'll need to tweak the configuration and I'm not 100% sure this is causing sending to fail. However, for the HGI80 to actually send a message you need to specify a very specific device ID in any messages you want it to send and this isn't necessary for simply receiving messages. The device ID is 0x4802DA or 18:730 depending on the format needed by Node Red.

Hope this is of some help.

Dan

[DanD]

I have it wired up, and think i did it correctly.
But now the hardest part for me, installing the firmware to get stuff running.

Hopefully someone can help me with this.

I'd use the Arduino IDE (download from their website) and install it on whatever machine you have available to connect to your Nano. Once you've been able to successfully connect to the Nano within the Arduino IDE and uploaded one of the many test scripts, you can then upload the firmware previously linked. Hopefully, if it all works, you've then got a functioning serial device which can communicate with your Evohome system.

Dan

[minthemerciless]

@minthemerciless,

I haven't messed much with Node Red, so can't tell you specifically where you'll need to tweak the configuration and I'm not 100% sure this is causing sending to fail. However, for the HGI80 to actually send a message you need to specify a very specific device ID in any messages you want it to send and this isn't necessary for simply receiving messages. The device ID is 0x4802DA or 18:730 depending on the format needed by Node Red.

Hope this is of some help.

Dan

Hi Dan, I have tried sending the data below over serial to HGI80, expecting a response from the controller but had no such luck.

"RQ --- 18:730 01:172240 --:------ 0404 007 00200008000100"

request, from 18:730 (HGI80) to 01:172240 (my controller id), blank address, schedule command (0404), length (7 bytes), zone (00), 20000800, packet (1), total (0).

This is based on the backup schedule python script on github and I think it should work.

https://github.com/Evsdd/Evohome_Schedule_Backup

I think this might be yours Dan?

The controller was purchased earlier this year. Do you know of any changes that may mean the recent controllers don't work with the HGI80?

thanks again for the help

[minthemerciless]

Hi Dan, I have tried sending the data below over serial to HGI80, expecting a response from the controller but had no such luck.

"RQ --- 18:730 01:172240 --:------ 0404 007 00200008000100"

request, from 18:730 (HGI80) to 01:172240 (my controller id), blank address, schedule command (0404), length (7 bytes), zone (00), 20000800, packet (1), total (0).

This is based on the backup schedule python script on github and I think it should work.

https://github.com/Evsdd/Evohome_Schedule_Backup

I think this might be yours Dan?

The controller was purchased earlier this year. Do you know of any changes that may mean the recent controllers don't work with the HGI80?

thanks again for the help

Hello again,

I have finally managed to get my controller to respond with schedule info. Yay! It looks like the address was the issue. When I tried it before I had changed my node red flow and removed the link to the serial transmit node, Doh!

The help is greatly appreciated.