LLC - Why bother... It works fine without... Edit:[except when it's not. Author will not support posts in this category]

[raomin]

First, kudos to @visualapproach, amazing work, really. Well deserved coffee (and beers!) on its way!

I've been connecting ESPs with 5V devices for quite some times now and came to the conclusion that ESP are 5V tolerant (at least in my experience). It has been confirmed elsewhere.
Likewise many 5v circuits are 3.3v compatible.

My Lay-z S100101 is no exception. I uploaded on a wemos D1 mini, hooked both ends, shared the 5v and GND, and voila, I even got the beeper music to celebrate :) Everything works flawlessly and was ready in minutes!

My test setting:

Thanks again for this project!

[visualapproach]

Many thanks man! I converted it to beer in the sun ☀️! I won't argue with you on the voltage tolerance, there is plenty of that on other sites. If it works it works and worst case you loose an ESP for a few $. I leave it to the reader to decide for now.

Again thx for your support and sharing your knowledge!

[dan88uk]

Hey @raomin can you give a little more detail on this setup? I'm struggling to get my original pcb to work so wondering about giving this a go. Can I use the ESP8266 or do I need to buy a wemo?

[raomin]

I use a wemos d1 mini but any other esp8266 should work.
Then you connect the pins directly to the CIO port and the display port. You just need to make sure both the display and the esp8266 gets 5v and GND from the CIO.

[dan88uk]

Hey @raomin thanks for the explanation... Can I just ask one final question... (sorry!) I have my 6 wire male / female cable, which orientation do they need to be and which pins do I solder them too?

[dan88uk]

I had a go at editing the schematic.... would this work...?

[menime8]

No, 5V don´t connect to 3,3V!

[visualapproach]

No, 5V don´t connect to 3,3V!

Exactly, that is likely a chip toaster

[raomin]

This is my setup:

You can most certainly replace the Wemos D1 mini with a lolin or any other esp8266.
Just adjust the PINs in lib\BWC\BWC_6w_type1.h lines 11-12, and also the board parameter in platformio.ini accordingly.

[kingrun]

So I flashed it. The webUI is working it connects to my wifi. I soldered the wires according to the photo. When turning on the pump. the module is receiving power via the 5v and boots up the webui. But the display does not light up nor is there any beep. Trying to turn on any of the options in the webui as well does not seem to do anything. I also used a multimeter to check whether the 5V is getting through to the display connector cables and it seems fine on that end. But seemingly no light. I thought I broke it at first but when connecting back everything originally it seems to work fine. Not sure how to diagnose this further.

Tried PCBV1 and V2 only adjusting the pin numbers that are highlighted. Reflashing and testing again seems to have the same results.

Board defined:

Pins:

Model:

Wiring poor drawing(the wire colors are flipped since the connectors came pre-plugged so I just wired accordingly):

Nothing else is changed and it flashes and runs the webui without problems but no display or beep or function works.
pump model is also seemingly like others mentioned S100101

[raomin]

From your pictures, you should be ok.
Cross check again that the PINs are properly setup in your code.

• Just keep one definition of the cio/dsppins[]
• Did you correctly change the lib\BWC\BWC_6w_type1.h file?
• To be sure your board definition is not the culprit, use the gpio pin numbers:

const int ciopins[] = {2, 0, 4};
const int dsppins[] = {13, 12, 14, 16};

Then, I would go step by step.

• check continuity from the ESP pin to the connector pins of the pump (just to make sure your connector is ok).
• Disconnect the CIO, only keep the DSP side. You should see some values on the webUI.
• ...

[kingrun]

So I kept everything as is and what I tried is this. I just plugged it back to my pc via usb. And redid the flashing steps

First I did the arrow upload

Then the LittleFS data upload afterwards. Although it still saved my SSID and didn't overwrite it to defaults. After flashing it in the sequence above. I plugged it back in and it came up working fine. The screen turned on with the jingle and everything seems to work now.

Not sure what actually did the trick for the last part. But it works now!

Huge thanks for the help. I can now manage my little spa remotely 🎉

[lenn0x12]

I followed this post and was able to get my Saluspa Miami 2021 working! Mine shows Model # S100105

[grainsoflight]

I followed this post and was able to get my Saluspa Miami 2021 working! Mine shows Model # S100105

This still working for you? I have the same model pump and am thinking abou trying this

[raomin]

Hey @dan88uk, did you connect your esp successfully?

[dan88uk]

I haven't yet... your mod was a potential solution to my problem (my pcb wasn't working...!) but it turns out I've had my connectors the incorrect orientation (doh!). So I need to fix that first and hopefully it'll work. If not then I'll be trying your solution 😃

[segapus]

I built this today, will try it out tomorrow. Awesome if it works.

Edit: For pump Model S100101

[kingrun]

Is the white wire on the female connector not connected to anything? Or is it looped into itself?

[raomin]

Not connected to anything. It's the audio from the CIO.

[kingrun]

Great. Thanks!

[jonoscott]

Very nice, where do you get the 6 pin plugs? Or what are they called at least so I can try find them here locally.

[segapus]

6 pin jst sm connectors i believe theyre called

[GoblinRules]

Morning, Congrats on getting this working. I was directed here to try your layout.
Would this work if I made the changes in lib\BWC\BWC_6w_type1.h that are referenced above? I know my drawing is bad, but is this right for the ESP8266?
Bad Schematics

[visualapproach]

It would make your life easier to define pcb_v2 and use that pinout. No crossing wires on the nodeMCU. They use a mini with a different layout.

[raomin]

The sound coming up says 2 things:
1, Your ESP is not dead
2. Your power lines (5V and GND) are OK in the whole chain.

Ok, again, step by step:

1. Take out the ESP
2. Plug it to USB
3. Open the Serial monitor on platformio and look for an IP address if it does connect to your access point. Else it should start the wifi access point.
4. Open the web interface, make sure you see the interface (if you have a 404, look for the doc, you forgot to upload the file system)

Your BWC_6w_type1.h configuration matches the one you have on your drawing, no need to change it.
Also, you are in PCB v1, so make sure you kept #define PCB_V1 uncommented in lib\BWC\model.h

Once you have reached this step, you can plug back the ESP on your PCB.

First, unplug the display, and plug in your pump. You will not hear the music but you should get the wifi and the web interface with the temp of the water.

Then, unplug the pump, plug the display and plug back in... All should be ok now.

[GoblinRules]

Ok I ran through all your steps again, everything was as stated.

I decided to remove the resistors off of the display cables, Now The unit powers up, the display shows the IP scroll past.
I now have full control of the unit via the ESP, but the display buttons do not work on the display.

So one step away.

Does the display buttons not working mean I still need resistors of maybe a different resistance?

Thank you all for your help so far.

[GoblinRules]

on a side note, To get the temp to display in C on HA, I need to set it to F on the ESP in the web interface.

[GoblinRules]

Ok, so the bridges that I was using I changed for something a little "better".
& the whole system is working.
Display works, touch panel works and web interface works.
So thank you everyone for your help.
Awesome project.
https://imgur.com/a/vhmQ4kr

[visualapproach]

Congrats to getting it sorted out! Regarding the F/C sensor, I'll update it to a better one later on.

[goofy79]

This solution work for me too - i have also a Lay-z S100101

[isocron]

Hi.
I installed this to day. The buttons on the display is working and i can see in webgui that it is updated when I press. The temperature is showing on display and webgui and the pump responds to presses on display, but when I change something in webgui nothing happens, if I turn on bubbles the switch switches back to off. I can save settings but I cannot restart esp from webgui. What have I missed?

[visualapproach]

every device on the same network? Not guest-network?

[isocron]

hmmm yes :-)
Moved it over to my main network and it is working now.
Sorry for that and thank you for quickly pointing me right!

[kingrun]

Want to try this as well I have the s100101 pump model. From the instructions I assume I just change the model to the miami2021 since it seems to have the same features as the cancun which I have. Since using the wemos d1 im not sure if its necessary to specify the board type as it doesnt seem to be mentioned anywhere. (Basing of the pdf instructions). This seems like the easiest option with the wemos d1 and the jst-sm 6 pin connector. Everything else seems clear to me apart from the changes needed to be made in VScode

[raomin]

Yes, you will need to set the board seeting to Wemos D1 as this property does the right translating between the D* named pins (D1,D2 etc.) and the internal GPIO (5,4,0 etc.).

To set the board type as WemosD1 Mini in PlatformIO, set this line in platformio.ini:

board = d1_mini

[kingrun]

Understood. Thanks for clarifying. Will update once I attempt this ☺️

[buteo72]

Hi, also at my place it seems to work with a "direct" Wemos mini. Pump S100101 Ibiza

[raomin]

Thanks for reporting. Maybe that solution could be reported in the Readme @visualapproach ?

[visualapproach]

Yes, I'll write something @raomin

[coreypottebaum]

I've followed the various folks in here but am having issues. I have an Ibiza with pump S100105. When turning on, I get the jingle, the ESP boots up, I can access the WebUI, but nothing works on the WebUI for changing anything on the pump. The buttons on the pump do not work as well.

I've checked continuity between the pins/connectors so that's all good.

I'm at a loss right now of what else to check. Does anyone have any ideas?

[visualapproach]

Hi, I'd do the hardware check to see if you have connected the right pins. Follow instructions at layzspa/hwtestinfo.html

[coreypottebaum]

Hi, I'd do the hardware check to see if you have connected the right pins. Follow instructions at layzspa/hwtestinfo.html

I ran the test, and it looks like it passed:

[visualapproach]

Good job on the testing! Well, it's hard to say what is wrong. There has been a lot of posts regarding extra resistors btwn cio and esp, but it should not be necessary when changing pinout to V2B. Problem was with some NodeMCUs but maybe applies here as well. So, I'd try this;
Shorten the wires and switch to PCB_V2B. Note the 'B'. If you don't see it as an option in model.h you need to download the latest version. Now that you know how to do the hwtest, you can do it again to see if you put the wires right. There is info about the pcb versions in the latest (development) build instructions.
You don't need an actual pcb to do this. It's just a different pin out.

[visualapproach]

You can also check in the browser console, if button presses on the display is reflected in the messages.

[matthewalampe]

I'm having this same issue on the same model. Did you figure out how to correct it?

[grainsoflight]

Can confirm this works for Saluspa Hollywood 6-Wire

[Tamas92]

It is working with Wemos D1 mini for a Tahiti with S100101 Pump. I could use the newest code and modified the values on the web accordingly.

[visualapproach]

Good, you edit everything from the web ui. Remember to upload the new filesystem image too

[Tamas92]

I did, thanks for this awesome project. I was disappointed when I just realized that I could buy a jacuzzi with Wifi by default. But now I'm really happy as the whole system is integrated to the HomeAssistant and Homekit. I don't know how much is a coffee in Sweden, but I sent some money. Enjoy and keep up the good work!

[visualapproach]

Thank you @Tamas92 ☕️🙏🏻
Happy you're satisfied with this project

[wimpy87]

Hi,
First of all, great jobb creating this and maintaining and supporting 👏

I've got a 54186 eggpump and a D1 mini.

I've been seweral rounds error testing and resolved some of my initial issues, but now I'm stuck. I've got success on all pins on hwtest, I also get sound (low volume due to 3 volt) when pressing: clock, power, up/down. There is no light in display, there is no response on pump when pressing. I have to admit I did not check webUI for response from pressing buttons, but the sound was clear it was conected to the button presses (different sounds on different buttons)

There was no response when pressing: lock, c/f, bubbles, heating and pump (filter)

Any tips for what to check further?

BTW I may or may not have soilder the connectors backwards first, so maybe a possibility that it's have been fryed 🙈

[visualapproach]

@wimpy87 Hi adn thx, don't know, but as usual keep the wires as short as possible, use pcb_v2B pinout and make good solder joints (using flux!!)

[Bart39]

Just wanted to add that using my d1_mini and V2B pinout It is working fine with my Hawaii Hydrojet Pro (S200102).
After all my bad soldering attempts that is….

thanks for all your hard work @visualapproach

[visualapproach]

Thank you @Bart39

[DJDeel]

Hi Bart! I have the same model and I want to connect it to d1_mini. Are you using only the D1 Mini or is it on a different board. What pins to connect the pump to?

[espenfjo]

I have an odd situation Im not quite able to figure out.

I have connected everything correctly according to the schematics above, but hwtest (slightly modified to ensure it loads the correct gpio pins) still fails when shorting the two connectors:

CIO to DSP pin 4 => 13 success!
CIO to DSP pin 2 => 12 success!
CIO to DSP pin 0 => 14 fail! Errors: 500

DSP to CIO pin 13 => 4 success!
DSP to CIO pin 12 => 2 success!
DSP to CIO pin 14 => 0 success!

The odd thing is that 0 => 14 always show 500 errors. It makes me believe there is something that I need to do with the d1 mini. Some kind of fuse or flag?

[AndyMu97]

Hi, at first thanks to all working on this project!
I configured a lolin nodemcu v3 according to the settings, connected the pins and got it working for one time.
Switching on, the display was dark, and only a little beep to hear. I was able to turn on and off the pump, display activates and everything seems to be ok.
I switched off the power and wanted to restart the whole process to document with video… but now nothing is working anymore.
ESP just blinks 1 time, no WiFi any more or any other reaction.
Trying to reflash, but it is stating there is no device connected.
Did I damage my ESP? The 5V was connected to Vim pin
Thank you!

[AndyMu97]

Looks like the Lolin is not 5V tolerant 👎
Think I sizzled it with the 5V data connections...

[AndyMu97]

Well... maybe I'm wrong? I got the 5V connected to Vin, which voltage is then running on the other pins? Is it 3.3V by the ESP or 5V due to spa?

[visualapproach]

8266 uses 3.3 V internally. Vin goes to a linear voltage regulator that feeds the chip. All GPIO pins are 3.3V but should be 5V tolerant. The pump has 5V signals but it shouldn't fry the pins. It can be fried by other things too though, like shorting output pins to ground.

[AndyMu97]

Thank you for quick reply. Well... no idea if that happened (hopefully not). But it is just a ESP... no worries.
More interesting is why blue LLC is not working properly, but I will try with red one next.
I just tried to do the hardware test and had strange behaviour:
Connecting the male and female let the ESP "freeze" (permanent blue LED) and it was no longer available via WiFi. After removing, the WiFi worked again (LED blinking). G and 5V on Vin connected to a 5V source.

[AndyMu97]

So I started from the scratch, build up a new PWC and nodemcu and it looks like working! Not 100% but ok.
The first nodemcu is not damaged, I was able now to re-flash it. Was a problem just with COM port and/or drivers.
On the first PWC it looks like some solder points were not correctly done.

As there is just something which is not 100% working (no start on repowering the spa), but this will continue on in Successfully replicated on S100101 ...

[Zetto12]

Hi All, I bought a spa about 2 weeks ago and was pretty much straight away annoyed but the lack of config options. So I googled and came across this project a couple of days ago. I had a D1_mini at home and flashed it. So far everything looks good, just waiting for the JST connectors to arrive so I can install it. In the meantime, I saw that people have successfully integrated with the Model S100101 and S100105. Mine is S100103. Does anyone have the same model and can share his experience? Thanks in advance and thanks to the creator. This is awesome.

[domwolfy]

Having trouble here.

I'm using a nodemcu esp266. I've wired it as per

#312 (comment)

and used the same pin configuration but I just get e02 on startup.

What could be causing this?

[visualapproach]

Hi, except that you are out of spec by skipping the LLC, E02 is no flow error. If you run on the bench for testing you will get this if starting the pump.

[domwolfy]

Thankyou, the document is clear that this method is not supported.

For future viewers, the issue went away once the spa had water in it and it all worked fine.

[Rodrigocicci]

Hi. I managed to connect the s100103 layzspa tahiti to my wemos d1 mini and its working great on home assistant. The only issue is the temperature graphic show some spikes.

Any idea how to fix that?

[matthewalampe]

Has anyone seen it where when you select "bubbles" or "pump" or any of the options it "checks" the box and then "unchecks". I'm setting it up for the first time and when I select the options nothing happens on the pump.

[matthewalampe]

2024-01-09.12-47-03.mp4

This is a video of what is happening

[johnwillsey]

If you don't see the temp and have [ABC] something I'd suspect is not wired right. Verify you have +5V between 5V and ground wires as indicated in the thread wiring pic example. my newer model has wires flipped from one of the early reference pics. I was getting -4.6V. Once I flipped my wiring wires 180 from the pic and got +5V on my board once plugged into the spa pump, all was good.

[matthewalampe]

So this same problem happens just with it plugged into my computer as well - not connected to the pump
Something wrong with the code maybe?

[johnwillsey]

I wouldn't expect it to work not plugged in as there is no feedback from the pump/controller. But now that you mention it, think I might have observed the same thing on the desk. toggles would just bounce back. I assumed it was hooked up to the pump unit.

[DannyleUK]

Hi guys,
Really good guide and hoping to get this working seems the weather is warming up and time to bring the hot tub back out. I am going to be doing it on a Paris which I think is the same model as a Vegas. Is it possible to set the time the heater comes on each night, for example set it so it heats on a timer between 11pm and 5am?

Thanks,
Danny

[johnwillsey]

Yes. Below is my normal schedule. when I want it hot, I drop in a 2nd heater from a 2nd circuit and add a one time event to set temp to 102.

[DannyleUK]

Thanks for the reply, so does it just stay on then until it reaches the target temperature, e.g. you can't just tell it to come on between certain hours?

[johnwillsey]

heater desired temp and pump operation are separate operations. But yes, notice I start my pump at 10AM then off at 2PM each day. (command queue is a bit jumbled because it was after 10AM when I took screenshot, so date incremented to tomorrow for anything after 10AM)

[Reongard]

Hi everyone,

as i am trying to convert my 2021 haway hydrojet into a smart-pool, i need some assistance.
i am using a Wemos D1 Mini with the current firmware on my pump S200102.

The issue: when i connect the wemos to the pump, i can connect to it via web interface. The display works and all the buttons make sounds when i press them. also adjusting the display brightness works from the webinterface. However, nothing else works. I cant control the pump via the webinterface or via the buttons on the pump. Hardware test does not show any errors, soldering points all are good. I guess i do have an issue with the connection to the pump, but for the love of god, i cant figure out whats wrong. already tried different pin configurations towards CIO with no success. Can someone give me a hint?

[visualapproach]

Hi everyone,

as i am trying to convert my 2021 haway hydrojet into a smart-pool, i need some assistance.

i am using a Wemos D1 Mini with the current firmware on my pump S200102.

The issue: when i connect the wemos to the pump, i can connect to it via web interface. The display works and all the buttons make sounds when i press them. also adjusting the display brightness works from the webinterface. However, nothing else works. I cant control the pump via the webinterface or via the buttons on the pump. Hardware test does not show any errors, soldering points all are good. I guess i do have an issue with the connection to the pump, but for the love of god, i cant figure out whats wrong. already tried different pin configurations towards CIO with no success. Can someone give me a hint?

Hi, there is a small hint in the topic name

[kuna3d]

Hi there. Thank you for great tutorial. I meet some problem.... Soft is download to d1 mini but when I did a wiring like in instruction:

• when I start I do not have any sound,
• I can connect wifi to D1 it shows temperature on web interface
• I can not switch anything (when I switch the pomp switch is coming back to off position on web interface to off position after one sec.
• Display on spa shows nothing, when i try to press power button on spa i hear a little sound like bip.

I was traing to figure out what is wrong and connect wire by wire one by one and:
when I connect a d1 and just power wires to display it works (it displays temperature), when I connect third wire yellow to d7 screen goes off, to turn it on I need to connect yello directly to wire goes from spa (not thru D1) .

any Idea what is wrong?

[piordeg]

I have the same issue :/

[lazyjalokin]

Total noob in need of help!

I have uploaded the software on a lolin d1 mini. The webserver is working. When I install the ESP in the pump, it boots up, but the display is dark and the buttons don't react. I have tried every combination of PCB layout in the settings. The lolin pinout should match the wemos d1 mini - right? I'm am at a loss. I have checked for continuity in all the connections.. I have the Grenada Spa with a S100101 pump.
Any help would be appreciated!

[kuna3d]

It’s likely because you need a LLC, this thread covers it alot

what is LLC?

[kuna3d]

but d1 mini use 5V and it is properly powered i can gog in to it, but spa do not display anything it looks like dead when is connected via d1mini.

[visualapproach]

but d1 mini use 5V and it is properly powered i can gog in to it, but spa do not display anything it looks like dead when is connected via d1mini.

No! You feed it 5V which is stepped down to 3.3V. Pins are 3.3V and CIO/DSP expects 5V

[kuna3d]

ok, so how looks wiring and where to buy this LLC which will fit for this project.

[visualapproach]

Look in the manual or ask @metaljay

[lazyjalokin]

Logic Level Converter. ESP uses 3.3 volt. Spa uses 5 volt.

[Jesperthansen]

Can I still use the control panel?

[lazyjalokin]

Yes.

[Jesperthansen]

Which Code for ESP8266?

[lazyjalokin]

Did you read the manual? It is very detailed.

[thepartyman81]

Now I have ;)
But I can't find lib\BWC\BWC_6w_type1.h ???

[thepartyman81]

can't find lib\BWC\BWC_6w_type1.h

Using ESP8266