[INFO] Some ESP32 feedback

[jellewie]

Not a bug report or an issue, just wanted to give some feedback to help the README and such alone.
I do have some minor questions/bugs but I will post those separately so they can be tracked
Thanks for making this, it works well and straight out of the box for me!

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I have a model with Both CN-CNT and CN-WLAN ports. The DNSK-P11 module was already installed in the CN-WLAN port.

Since I use the CN-CNT port I needed to configure "type: cnt".

I do not have 12V at the CNT connector. (it's floating)

Since an ESP32 is completely 5V tolerant, it can just work without a level shifter (The 3.3V data from the ESP is higher to the 5V than 0V on the Airco receiver side, so that also doesn't even mind it)
I just literally connected it like this to the ESP32:

I uploaded the example code, and it just worked.

The Airco now uses 0.25W more with the ESP32. The Airco + WiFi was 0.65W, and now with the ESP32 included its about 0.9W. It is of course possible to remove the WiFi module to have a lower Idle load again.

[TheDK]

That was almost too easy - ESP32 NodeMCU DevKit C with a CN105 to Jumper Pigtail. Just connected, flashed and works instantly.
No Level Shifter - I’ll report back should the 5V on the UART bus kill the ESP…

[jellewie]

I have been running this ever since on both my units. No problem at all so far with the hardware.

Software I found a specific bug with my unit, but that's nothing to do with the electrical and stements above

[Lauriz7]

Not a bug report or an issue, just wanted to give some feedback to help the README and such alone. I do have some minor questions/bugs but I will post those separately so they can be tracked Thanks for making this, it works well and straight out of the box for me!

does it still work for you?

[jellewie]

@Lauriz7 yes this is still running flawlessly for me

[danielcherubini]

Thanks to this, I just got mine up and running. Works flawlessly.

[willie013]

Thanks for starting this thread and sharing this info! I checked the documentation and wondered why a ESP32 with 5v in directly was not possible. This thread confirmed this, which is great! Maybe we could add a PR to add this additional info to the readme? 😄

On a side note, the JST-PA cables can be bought of aliexpress precrimped with dupont wires, which makes the install literally 1 minute: https://nl.aliexpress.com/item/1005005562174022.html?spm=a2g0o.order_list.order_list_main.5.1de279d2Ph9w6f&gatewayAdapt=glo2nld

And what case do you guys use to protect the ESP32? It seems kinda sketchy to just leave it in there so close to the live wires? Just a 3d printed one?

[jellewie]

@Wimll Yhea we could. That's why I shared the info here in the first place for.

I have 2 airco's with this mod and they have been working perfectly.

My airco's have an esp size space at the outside of the 230V area. I just soldered 4 wires to the PCB at the back of the connector. And pull them though the hole. I guess the space I now use is was ment for a second wifi unit or some sorts? I don't have a picture on hand

[willie013]

I have 2 airco's with this mod and they have been working perfectly.

Thanks! I will have a look inside my units, still have to do the install. If mine also has this open space, I think this mod is meant to be done anyway? 😋

[jellewie]

Found a picture of my instalment

[jeroenvdd]

this mights now sound completly stupid but:

do I see this correctly and is this just a basic esp32 without any other hardware and thus not in need of the boards / c3 mini like og project?

[jellewie]

@jeroenvdd yes you are correct. The ESP32 is 5V tolerant. So just need to connect the 4 wires wife's shown in my drawing in the order I drew them in. Works best to power the AC down if you do so

[jeroenvdd]

@jeroenvdd yes you are correct. The ESP32 is 5V tolerant. So just need to connect the 4 wife's shown in my drawing in the order I drew them in. Works best to power the AC down if you do so

dang I only have 1 wife :D

other than that good to hear I have some testing to do this evening

[rickardfransson]

So, A ESP32 and some cables and then this repo downloaded to the ESP32?.
Thats all? Its then connectable till HA?

[willie013]

So, A ESP32 and some cables and then this repo downloaded to the ESP32?.
Thats all? Its then connectable till HA?

Yes, that's exactly what this whole discussion is about 😜

[kevindegrootgrave]

I just ordered 4 ESP32's and the precrimped cables mentioned before by @willie013. It's working absolutely perfect, thanks for all the info. I've just got one problem: my AC only supports vertical swing, but since vertical AND horizontal swing are mentioned in the components/panasonic/ac folder it is still selectable in the AC card. Is there a way to completely turn the horizontal swing option off?