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Building smart HVAC monitoring, in public.

Design notes, install write-ups, and hard-won lessons from the team building the hardware and software behind SmartCloudControls.

Latest posts

3 posts so far — more as we build.

PCB layout of the SmartCloudControls HVAC Module v1 showing the Particle Photon 2 footprint, pressure transducer terminals, temperature probe connectors, CT clamp input, and power section.
HardwareCold StartDiagnostics

Built for the Cold Start: One Board for Pressure, Temperature, and Current

I wanted a tool I could hook up with the system and power off, then switch the system on and record what happened from the first second. That meant pressure, temperature, and current on one board, with every reading going to a database the whole team can open.

SmartCloudControls Engineering6 min read
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The SmartCloudControls unit page showing three nameplate photos — wiring, a condenser badge, and a data plate — above fields for refrigerant, manufacturer, model, serial, tonnage, voltage, phase, and RLA.

Part 2 of a series

NameplateDiagnosticsHow It Works

How the Unit Record Fills In: Nameplate Photos to Superheat and Subcooling

Part two. The technician photographs the equipment — the data plate, the wiring, the badge — and each photo is read in the background. The data plate fills in refrigerant, model, serial, tonnage, voltage, phase, and RLA, so superheat and subcooling no longer depend on someone selecting a refrigerant by hand.

SmartCloudControls Engineering4 min read
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PCB layout of the SmartCloudControls HVAC Module v1 showing the Particle Photon 2 footprint, pressure transducer terminals, temperature probe connectors, CT clamp input, and power section.

Part 1 of a series

Field NotesDiagnosticsHow It Works

How a Diagnostic Call Works: Nameplate Photo to Live Data

First in a series — more detail to come. We are converting our monitoring device into a diagnostic setup, built on a custom board we designed so every relevant reading can be taken and recorded: pressure, temperature, amp draw, supply and return air, and humidity. Everything logs every ten seconds to a link the whole team can open.

SmartCloudControls Engineering4 min read
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More write-ups coming soon. New engineering notes land here as we finish them.

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