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<blockquote data-quote="TriLife" data-source="post: 387" data-attributes="member: 49"><p>Great points all.</p><p></p><p>A few additional observations:</p><p></p><p>After a few months in operation using Analog output pressure sensors, I replaced them all with I2C. The analogs were way too sensitive to the environment, noise, temp etc. Gamico transducers are $38/ and worked beautifully. And i don't have to deal with calibration anymore.</p><p></p><p>I second the idea of monitoring contactors with digital inputs (as many as relays). I melted a jacuzzi heater because a mishap.</p><p></p><p>Most valves are still 24VAC 3-wire. To open close, you need a NO/NC relay/mosfet.</p><p></p><p>An MQTT type (or similar) to talk to Home Assistant or UDI is a must</p></blockquote><p></p>
[QUOTE="TriLife, post: 387, member: 49"] Great points all. A few additional observations: After a few months in operation using Analog output pressure sensors, I replaced them all with I2C. The analogs were way too sensitive to the environment, noise, temp etc. Gamico transducers are $38/ and worked beautifully. And i don't have to deal with calibration anymore. I second the idea of monitoring contactors with digital inputs (as many as relays). I melted a jacuzzi heater because a mishap. Most valves are still 24VAC 3-wire. To open close, you need a NO/NC relay/mosfet. An MQTT type (or similar) to talk to Home Assistant or UDI is a must [/QUOTE]
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