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<blockquote data-quote="TriLife" data-source="post: 187" data-attributes="member: 49"><p>Some further thoughts on a PAS:</p><p></p><p>I built a chemistry monitoring system, based on an arduino Mega 256.</p><p></p><p>It monitors pH, EC, temperature and filter pressure. It also provides DC current via a pair of relays to a the copper ionization system I use in lieu of the typical chlorine based treatment systems. For the latter, you'd need an ORP sensor. Atlas Scientific has a nice array of sensors and HATS for Arduino and RPi for this purpose, along with little stamp sized signal conditioning modules.</p><p></p><p>Pool valves are still mostly 24Vac driven, 3-wire affairs, although they are starting to sell ($$$) PWM versions. A typical system would need a minimum of 2, but ideally 4 or 6 valve drivers.</p><p></p><p>There is a touch screen, which allows me to monitor what's going and calibrate the sensors. </p><p></p><p>A simple webserver allows me to remotely see the status</p><p></p><p>It also sends emails of Log Files and alarms</p><p></p><p>The sensors are I2C based.</p><p></p><p>In order to communicate with the Pentair Pump, it needs an RS485 interface.</p><p></p><p>If you go on the CocoonTech.com or <a href="http://troublefreepool.com/" target="_blank">troublefreepool.com</a> forums, there are a bunch of discussions on how to communicate with Pentair pumps.</p><p></p><p>It would also be important to have a comms interface with home automation systems. I'm a developer (budding) with Universal Devices and can try to help you with developing a node-server for their Polisy and eISY systems.</p><p></p><p>Cheers</p></blockquote><p></p>
[QUOTE="TriLife, post: 187, member: 49"] Some further thoughts on a PAS: I built a chemistry monitoring system, based on an arduino Mega 256. It monitors pH, EC, temperature and filter pressure. It also provides DC current via a pair of relays to a the copper ionization system I use in lieu of the typical chlorine based treatment systems. For the latter, you'd need an ORP sensor. Atlas Scientific has a nice array of sensors and HATS for Arduino and RPi for this purpose, along with little stamp sized signal conditioning modules. Pool valves are still mostly 24Vac driven, 3-wire affairs, although they are starting to sell ($$$) PWM versions. A typical system would need a minimum of 2, but ideally 4 or 6 valve drivers. There is a touch screen, which allows me to monitor what's going and calibrate the sensors. A simple webserver allows me to remotely see the status It also sends emails of Log Files and alarms The sensors are I2C based. In order to communicate with the Pentair Pump, it needs an RS485 interface. If you go on the CocoonTech.com or [URL='http://troublefreepool.com/']troublefreepool.com[/URL] forums, there are a bunch of discussions on how to communicate with Pentair pumps. It would also be important to have a comms interface with home automation systems. I'm a developer (budding) with Universal Devices and can try to help you with developing a node-server for their Polisy and eISY systems. Cheers [/QUOTE]
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