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Published 20 hours ago • verified publisher icon jcallaghan

Hot tub water quality - ORP sensor

Open jcallaghan opened this issue 4 years ago • 8 comments

I found some really helpful articles on pool chemistry which pointed me towards the need for an ORP sensor. This will allow me to measure my chlorine levels.

  • https://sensorex.com/pool-chemistry/
  • https://blog.intheswim.com/total-dissolved-solids-in-swimming-pools/

Originally posted by @jcallaghan in https://github.com/jcallaghan/home-assistant-config/issues/12#issuecomment-623085756

jcallaghan avatar May 03 '20 10:05 jcallaghan

Hey -> just wanted to ask you whether you got any traction on ORP sensing? I just recently completed a battery powered ESP32 + Atlas Scientific ORP kit for my bromine hot tub. On wake-from-sleep (power - on), my ORP readings take longer to stabilize in hot-tub water (about 1 minute to 95%), compared to the reference solution ( a few seconds) or the datasheet. Otherwise, measurements from the kit from atlas scientific are pretty awesome!

mzakharo avatar May 22 '22 16:05 mzakharo

@mzakharo How did you set up this? And what do U use? Esphome?

Teryeahh avatar Jun 08 '22 13:06 Teryeahh

No not esphome. esphome is not so great on battery. micropython all the way.

Details of my project: https://github.com/mzakharo/tubby/README.md

mzakharo avatar Jun 08 '22 16:06 mzakharo

@mzakharo Thanks for your quick reply👍 I'm thinking of building monitoring for my pool. The plan is to mount sensors in a bypass. and monitor orp, ph, temp, environment temp and pump pressure. So i guess some of your hardware will work in ny case 👍 I'm running Home Assistant. And already have a few esphome devices. But i also have mqtt. Guess i'll try with esphome. But have more options at least

Teryeahh avatar Jun 08 '22 17:06 Teryeahh

@mzakharo Do you measure constantly?

Teryeahh avatar Jun 08 '22 17:06 Teryeahh

Constant measurement was not an option for me because I dont have power near the tub, and wiring power from the tub's electronics is ....... unwise due to insurance/warranty concerns.

I had to go for a battery powered solution, so the system is in deep sleep for 60 minutes between measurements.

mzakharo avatar Jun 08 '22 19:06 mzakharo

Ok. I have power where I plan to have this. So i guess constant is an option for me 🙂

Teryeahh avatar Jun 08 '22 19:06 Teryeahh

Folks, thanks for your comments and contributions. Life has been a little hectic and I've had my focus elsewhere, forgive me. Over the coming weeks I will respond to each and every one of your comments as well as bring this repo back to life. I have lots to share. 🫶🏼

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jcallaghan avatar Jul 26 '22 16:07 jcallaghan