Just thought that I would share a swimming pool monitor project that I have been working on
here's is what I set out to achieve:
Provide monitoring of 5 sensors
- ORP (Oxidation/Reduction Potential) – This can be used to measure chlorine levels
- Salinity (Electrical Conductivity)
- 2 x Temperature
Record current sensor values and also graph long term readings.
Send an email when the pool chemistry is incorrect and suggest corrective action to restore the balance.
Control 4 x AC GPO’s that can be used for Pumps, Lights, Waterfalls etc. with multiple different timer settings.
Create a Webpage and Phone App to access readings, settings, graphs and control the timers.
I've documented how I built it and all the code on my blog https://myhydropi.com/overview