I'd like to present the solution I developped to regulate and monitor my pool.
The full project can be found here:
Brief description:
Three main metrics are measured and periodically reported over MQTT and an LCD screen: water temperature, PH and ORP values.
Pumps states, tank-level states and other paramters are also periodically reported.
Two PID regulation loops are running in parallel: one for PH, one for ORP.
PH is regulated by injecting Acid from a tank into the pool water (a relay starts/stops the Acid peristaltic pump).
ORP is regulated by injecting Chlorine from a tank into the pool water (a relay starts/stops the Chlorine peristaltic pump).
Defined time-slots and water temperature are used to start/stop the filtration pump for a daily given amount of time (a relay starts/stops the filtration pump).
A lightweight webserver provides a simple dynamic webpage with a summary of all system parameters. An XML file with more info is available at http://ARDUINO_LOCAL_IP/Info.
Communication with the system is performed using the MQTT protocol over an Ethernet connection to the local network/MQTT broker.
This looks like a very neat project, thanks for sharing it with us - I'm researching doing something similar for my pool - how have you found the system during the year or so you have had it in operation?
Has it proven reliable and how much maintenance has the system required? Has the Arduino run without crashing during this period?
SuperScuffer:
This looks like a very neat project, thanks for sharing it with us - I'm researching doing something similar for my pool - how have you found the system during the year or so you have had it in operation?
Has it proven reliable and how much maintenance has the system required? Has the Arduino run without crashing during this period?
TIA
Thank you @SuperScuffer
System has proven very reliable and my water has never been so clear without even needing to shock it in Spring, so I am very happy with it. Glad I ditched the commercial system I had before
On the negative side it remains a complex system which requires an MQTT broker on your LAN or in the cloud and an MQTT client (eg. MQTT.fx or a Home Automation system) to send the required commands for calibrating probes once in a while for instance, so not for everyone. I am considering adding a touch screen interface to make the system more autonomous and easier to use
Great project. Thanks a lot Loic74650. This summer I am going to build a pool of about 50/60 m3. The factory setting for pool maintenance costs a lot of money. Now when I start this project, I cannot find where and whат to buy ph/orp probes. who can advise what and where...
Thanks everyone
immarius:
Great project. Thanks a lot Loic74650. This summer I am going to build a pool of about 50/60 m3. The factory setting for pool maintenance costs a lot of money. Now when I start this project, I cannot find where and whат to buy ph/orp probes. who can advise what and where...
Thanks everyone
Greetings, I buy HANNA probes from my local pool shop, good quality
Can you specify exactly what probes you used? Maybe a link? I've looked up Hanna Probes and arrived at "Hanna Instruments" but only see a 3-in-1 probe of pH, ORP & Temp. I'm sure that isn't the one
Can you specify exactly what probes you used? Maybe a link? I've looked up Hanna Probes and arrived at "Hanna Instruments" but only see a 3-in-1 probe of pH, ORP & Temp. I'm sure that isn't the one
Sorry I don't know, I buy them from my local pool supply shop and the Hanna ref is not labeled
Can you specify exactly what probes you used? Maybe a link? I've looked up Hanna Probes and arrived at "Hanna Instruments" but only see a 3-in-1 probe of pH, ORP & Temp. I'm sure that isn't the one
I'm just looking to measure PH + Free Chlorine/Bromine and I've been looking over the Hanna probes listed above. And there are indeed many, but there is no price tag as the electrodes themselves are not for the 'consumer market'
Any idea on the cost? And a shop in Europe to buy them from directly?