[Non-NASA] Help with Ducted system

[buzurk26]

Hi,

Great project! very keen to get this working with my AC

I have a non-Nasa ducted system that previously had the wireless controller on the f1/f2 terminals, but it has stopped working of late and Samsung don't sell replacements

I got some esp32s and the rs485 ttls, I'm a bit of a noob but wondering how i could get started with your code on my non-nasa setup?

Only functions ill need are

• AC ON/OFF
• MODE (Auto, Heat, Cool, Fan, Dry)
• Fan Speed
• Target Temperature
• Current Temperature

@lanwin

[lanwin]

Hi buzurk26, currently this would not work out of the box with that setup. I made sure it NonNASA can be integrated but currently it is not integrated. This is mainly cause I can not test it. When you would do the test part, I can pick the code over.

[buzurk26]

Hi @lanwin I would be happy to do the testing in hope to get a working solution

[buzurk26]

Hi @lanwin I have a ESP32 and TTL adapter all setup with ESPhome on it ready to go, let me know what i need to do to help test

thanks a bunch

[lanwin]

Give me some time. Currently I am a little bit overloaded.

In the mean time you could solder everything together. If everything works, the LED on the RS485 board should blink every few seconds.

Then you can bring up ESPHome and try to setup the ESP with my example script https://github.com/lanwin/esphome_samsung_ac/blob/main/example.yaml . Everything below device should be removed for now and the baud_rate should be changed to 2400.

If everything should work, you sould be able to access the webserver on port 80.

[buzurk26]

Hi @lanwin

Cheers, greatly appreciate your help!

Working in the background to control the zone motors and we mostly got that sorted so just pending the AC control, will spin up an esp with your code and capture the data?

Can i use esp32??? just replace the top part of the code with the board type or is 8266 preferred?

[buzurk26]

Hi, Its all connected now with your code, I left out everything under "devices" as you suggested

In the esp logs i see this over and over

The RX light on the TTL485 is flashing heaps but nothing coming down to the ESP logs

Is this code compatible with esp32? should i buy an esp8266 instead and try?

[buzurk26]

Switched to an ESP8266, still not recieving data on the ESP

I have this UART converter

Wired like this

and here is my code https://pastebin.com/ujyNVnqt

[lanwin]

Switched to an ESP8266, still not recieving data on the ESP

I have this UART converter

Wired like this

and here is my code https://pastebin.com/ujyNVnqt

Switched to an ESP8266, still not recieving data on the ESP

I have this UART converter

Wired like this

and here is my code https://pastebin.com/ujyNVnqt

Thats correct so far and the output is what I would expect. As I said. The actual data handling of the old protocol is not yet implemented. This is why there is not output.

[lanwin]

Please install again. I added some basic logging witch should log the received data messages. You could attach some samples I can use.

[buzurk26]

@lanwin - Ah makes sense, i hadnt realised.

Do I just re-upload the code to the esp via esphome i assume and it will pull your changes??

Also, does your code support esp32? i plan to use esp32 in future

greatly appreciate your time

[lanwin]

Reinstalling should pull the changes.

ESPHome supports ESP32 so the code should work there too.

[buzurk26]

Thank you, Just reinstalled now. Not getting any output unfortunately

[lanwin]

Can you add this to your config under UART

  debug:
    direction: BOTH
    dummy_receiver: false
      after:
        delimiter: "\n"
        sequence:
        - lambda: UARTDebug::log_hex(direction, bytes, ' ');

This sould print everything whats received via UART.

And did your RS485 convert is blinking?

[buzurk26]

Sure, will add that now and try

The RX led on the converter is blinking rapidly yes, nothing on the tx led

[lanwin]

You are at the wrong place. Under UART not under logger.

[buzurk26]

Yeah sorry my bad, tired eyes

uploading now

[buzurk26]

Heaps out output now

[buzurk26]

capture here https://pastebin.com/RfvmDbXr

Note the system is currently in standby, i turned it on again now and its getting more data too

EDIT: added a longer capture after turning system to heat mode https://pastebin.com/euh0yEy8

[lanwin]

Ok it seems that its receiving data. Please remove that lines again and pull and install again. I added another logging code.

[buzurk26]

Awesome, Will do that now.

[buzurk26]

Back to no data unfortunately

[lanwin]

Ok just put back the debug code from above. That data did not seems to match from what is specified in the protocol.

There should at least be some \x32 and \x34 in there.

Can you try to swap F1 and F2?

[buzurk26]

Oki, will swap f1/f2 and add that debug code back in

[buzurk26]

Here is the log now, https://pastebin.com/1jiz9uPE

[lanwin]

Hmm still no \x32 and \x34. Can you swap back F1/F2 and then try the following baud rates? Please check then of you find multiple \x32 and \x34 in log.

1200, 2400, 4800, 9600, 19200, 38400

[buzurk26]

Sure can try those tomorrow and let you know.

I do remember when trying a different baud rate the other day I got error like below

[buzurk26]

[lanwin]

You can ignore this.

[buzurk26]

Awesome, will do some testing tomorrow (well today now :-P ) and let you know asap, Thanks again!

[buzurk26]

Got to 9600 baud rate and things changed

RAW Code for 9600 baud -https://pastebin.com/Jb7xbR34

[lanwin]

Interesting. I thought the older systems use 2400 baud.

So anyway. We have now data packets I can work with (the yellow parts).

You can now delete the URT debug stuff.

[buzurk26]

Oh that is awesome to hear :) Glad were on the right track - Phew!

I'll take that out now and reboot, Anything else you need let me know

EDIT: Code removed, seeing lots of the yellow text and sometimes also see [W][TEST: 024]: 3200c828004334

[lanwin]

Can you please reinstall and run it some time and see of you get some log messages.

[buzurk26]

Yep will do, did you want me to capture the logs?

I can certainly see a difference, the yellow logs are coming in at a much slower rate now and have extra details in front of them

[buzurk26]

Here is the log, running for about 1.5 - 2 hrs logs_esp32-hvac-test_run (2).txt

[lanwin]

If you want you can install again. Then you should see some "known addresses".

If that work you could add some devices with that addresses (from template) and reinstall. Then you should be able to see target temperatures, room temperatures and mode within the webinterface and homeassist.

[buzurk26]

Awesome :) will do that now

[buzurk26]

[buzurk26]

Sorry not quite sure w hat format to add that known devices into your example code

Tried a few iterations like "00, c8" "c8" "00:c8"

samsung_ac:
  devices:
   - address: "20.00.00"
    room_temperature:
      name: Test1_temp
    target_temperature:
      name: Test1_target
    power:
      name: Test1_power

[lanwin]

This should work.

samsung_ac:
  devices:
   - address: "00"
     room_temperature:
       name: Test1_temp
     target_temperature:
       name: Test1_target
     power:
       name: Test1_power

[buzurk26]

OMG!!!!!!! i think were getting there - AC is on now and target is set to 20 deg on the panel

on/off not showing status and adjusting that temp slider does not seem to do anything i assume that expected?,

Is there option for fan speed and mode? (sorry if im jumping too far ahead, dont mean to just excited,)

Thank you

[lanwin]

:D dot get to exited. Currently this reads only a little bit data. Its not complete yet. And the sending part is currently missing.

[buzurk26]

I really, really appreciate your help on this, truely, let me know if you need anything further from me

[buzurk26]

Hi @lanwin Just wanted to touch base to see if there was anything else i can do to assist on this one?

Do you know if (now that we have that information) that it likely we can get the rest? Just trying to plan ahead and what to buy but before i go down that path hoping to get this working

[lanwin]

I am sorry. Currently I am ahead of a week off. So don't expect anything the next two weeks.

[buzurk26]

Hi, Hope you had a good break

Wondering if you had time to revisit this?>

thank you

[lanwin]

Hi, I am back. Maybe I get some time the next days to work on that.

[buzurk26]

That would be absolutely awesome! Thank you :)

Can i donate to you or anything by way of saying thank you?

[Mocky158]

Good evening, I have this heat pump from Samsung. I don't know which category it falls into, NASA or NO-NASA. Or if it is likely that this integrity could work when it is finished. Thank you Zoul AE160JNYDGH

[Foxhill67]

Highly interested in this project, thanks for the work done so far! I have the AE090RXEDGG/EU + AE260RNWSGG/EU heat pump combination from Samsung. According to the manual, the optional wifi module kit MIM H04EN can be installed. This kit is NASA compliant. But the kit is expensive and only accessible via Samsung Smartthings app. I am very much interested in this ESPHOME project to directly connect my heat pump to Home Assistant. Do you think it will be possible to at least read all interesting information (temperatures, power usage, error codes, etc)?