Water (Pool) Temperature Sensor

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aleph0
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Re: Water (Pool) Temperature Sensor

Post by aleph0 » Friday 11 May 2018 10:59

@multinet :
You can forget the 10k pull-up on the flowmeter, nothing change if it's there or not. I also advise NOT to use this flowmeter solution with a wemos as it creates a lot of reboot and I cannot find the reason for it. it's fine to use it with a *-Pi, but not with a wemos. Use a pressure sensor instead, it's easier to get it work reliably.

To link the dosing pumps to the pool, I'm using this kind of hardware : https://www.piscinemateriel.fr/traiteme ... ro-rx.html which is screwed in something like this https://www.piscinemateriel.fr/traiteme ... x1-2-.html It's a french only site, but I guess you can find the equivalent in any swimming pool shop

Custom sensors are fine for pH and ORP, that's what I'm using too

multinet
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Re: Water (Pool) Temperature Sensor

Post by multinet » Friday 11 May 2018 20:27

Thanks Aleph for all you Help

unfortunatly I'm have a bug now : my sensors PH and Redox have value at the highest : 41 for ph and -9400 for redox

I remove the formula in wemos and i saw that value in mv are both at 65535 on wemos ads115 device page

I don't know why and i've checked all my links they seem OK

Do you have a trick to find where my bug could be. I've checked all my link they are OK
Capture d’écran 2018-05-11 à 20.26.19.jpg
Capture d’écran 2018-05-11 à 20.26.19.jpg (29.72 KiB) Viewed 878 times
Multinet
PI 2 - Domoticz 3.9208
RFXCOM - RFXtrx433 USB 433.92MHz Transceiver (5 DIO 54755 + 2 DIO 54756 + 3 DIO 54798)
Z-Wave.Me ZME_UZB1 USB Stick (6 FGSD002 + 2 FGRM222 + 1 FGS223 + 1 FGMS001-ZW5 + 1 FGRGBWM441 + 1 FGBS001 + 2 FGFS101)
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randytsuch
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Re: Water (Pool) Temperature Sensor

Post by randytsuch » Friday 11 May 2018 22:26

@aleph0
Thanks very much for the long, detailed reply.
Your results are very impressive. You should be proud of this system.

The issues with acid is why I don't plan to try adding an acid pump. I have a fiberglass pool, and don't have to add acid very often. If I could just automate chlorine, I would be very happy. I may get a ph probe later, to at least automate the ph checking and alert me when it's time to add acid.

Time to start collecting the pieces I will need to put this together.

Randy

aleph0
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Re: Water (Pool) Temperature Sensor

Post by aleph0 » Wednesday 16 May 2018 10:37

@multinet

I've had this behavior then I first built my pcb. I was a very thin piece of copper who short circuit the SDA or SCL (can't remember) track to the ground. Something so thin that I had to use a magnifier to find it

multinet
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Re: Water (Pool) Temperature Sensor

Post by multinet » Saturday 23 June 2018 21:24

Hello Aleph0

Installation done : ORP sensor + Ph sensor + flow meter

Great ! thank you

I've a question about your formula on pulse counter for flow meter : why to you divide the value by 31,5 ?

Myflow meter in not the YF DN40 but the YF DN 50 (https://fr.aliexpress.com/item/5pcs-G2- ... 6c37njiHiT) : should the formula be different ?

on domoticz i get 7,22l/min it seems very low

thank for your help
Multinet
PI 2 - Domoticz 3.9208
RFXCOM - RFXtrx433 USB 433.92MHz Transceiver (5 DIO 54755 + 2 DIO 54756 + 3 DIO 54798)
Z-Wave.Me ZME_UZB1 USB Stick (6 FGSD002 + 2 FGRM222 + 1 FGS223 + 1 FGMS001-ZW5 + 1 FGRGBWM441 + 1 FGBS001 + 2 FGFS101)
6 sondes DS18B20

aleph0
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Re: Water (Pool) Temperature Sensor

Post by aleph0 » Saturday 23 June 2018 21:43

Yes, the formula depends on the flowmeter type. My experience with 3 different flowmeter is the formula given by the vendor of never the good one :-( They all need to be calibrated to give a meaningful value.

The method I used for that is to measure 10 or 20 liters in a tank, then pour them into the flowmeter with a funnel sealed on it and measure how many pulses I get. I calculate the calibration formula based on those measurement. The liquid need to be poured into the meter fast enough as the are not linear on low flowrates.

multinet
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Re: Water (Pool) Temperature Sensor

Post by multinet » Saturday 23 June 2018 21:54

Thanks for your quick reply

Last question for today, is there a specific formula for the 5V on port #3 on ads1115 .

the %value% in this port is 25471 on my system
PI 2 - Domoticz 3.9208
RFXCOM - RFXtrx433 USB 433.92MHz Transceiver (5 DIO 54755 + 2 DIO 54756 + 3 DIO 54798)
Z-Wave.Me ZME_UZB1 USB Stick (6 FGSD002 + 2 FGRM222 + 1 FGS223 + 1 FGMS001-ZW5 + 1 FGRGBWM441 + 1 FGBS001 + 2 FGFS101)
6 sondes DS18B20

aleph0
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Re: Water (Pool) Temperature Sensor

Post by aleph0 » Saturday 23 June 2018 22:11

Yes, but I'm not at home to check it. This feature is not very useful though ! I can give it to you on Monday

multinet
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Re: Water (Pool) Temperature Sensor

Post by multinet » Saturday 23 June 2018 22:50

C'est bon j'ai trouvé :)

%value%/1000000*187.5

avec un gain à 2/3

Bon week end !

merci
PI 2 - Domoticz 3.9208
RFXCOM - RFXtrx433 USB 433.92MHz Transceiver (5 DIO 54755 + 2 DIO 54756 + 3 DIO 54798)
Z-Wave.Me ZME_UZB1 USB Stick (6 FGSD002 + 2 FGRM222 + 1 FGS223 + 1 FGMS001-ZW5 + 1 FGRGBWM441 + 1 FGBS001 + 2 FGFS101)
6 sondes DS18B20

al300kr
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Re: Water (Pool) Temperature Sensor

Post by al300kr » Friday 27 July 2018 17:16

Hello, i want to install only ORP sensor and Ph sensor. Could you please answer few questions?
1. For this installation i will need only:
- 2A 5V power supply for wemos and electronic
- wemos pro
- level shifter for conversion between 5V of sensors and 3.3V of wemos
- ADS1115 analog input card for pH and ORP measurments
- phidget 1130 card for pH and OPR aquisition
- generic pH probe from banggoods
- generic ORP probe from ebay
- calibration solutions for both pH and ORP
correct?
2. do you have links for OPR and PH probes, level shifter, ADS1115 and phidget 1130 card?
thanks.

aleph0
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Re: Water (Pool) Temperature Sensor

Post by aleph0 » Monday 30 July 2018 8:41

Hello !

You're right for point 1, it's all you need ! Wemos pro was chosen because I need external antenna. If you can cope with internal antenna, wemos d1 mini is enough

2. links :
- ORP probe : https://www.aliexpress.com/item/ORP-oxi ... 2e0euzfE3x
- pH probe : https://www.banggood.com/BNC-Electrode- ... rehouse=CN
- level shifter : https://www.banggood.com/Logic-Level-Co ... rehouse=CN
- ads1115 : https://www.banggood.com/CJMCU-ADS1115- ... 86645.html
- phidget 1130 : https://www.gotronic.fr/art-adaptateur- ... -12112.htm

al300kr
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Re: Water (Pool) Temperature Sensor

Post by al300kr » Monday 27 August 2018 18:09

aleph0 wrote:
Monday 30 July 2018 8:41
Hello !

You're right for point 1, it's all you need ! Wemos pro was chosen because I need external antenna. If you can cope with internal antenna, wemos d1 mini is enough
Thank you!!
please, could you recommend me also calibration ORP fluid?

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