Environment & Weather on OGLAS — Off-Grid Local Alert System

Analog

Mon, 01 Jan 0001 00:00:00 +0000

The OGLAS analog node is the workhorse. It’s a battery-powered wireless device that wakes up, reads an analog input, sends the value, and goes back to sleep. Same firmware drives sensors for soil moisture, light, voltage, level — anything that comes out as a 0–3.3 V signal.

What it does

On each wake cycle:

Reads an analog input (12-bit ADC, 0–3.3 V).
Sends the reading to your hub.
Waits for confirmation.
If no confirmation, sleeps briefly and retries so the hub knows the reading is stale.
Once confirmed (or after retry limit) deep-sleeps for the configured interval.

The reading counter and last value survive deep sleep so a power-cycle doesn’t lose history.

Weather

Mon, 01 Jan 0001 00:00:00 +0000

The forecast for the nearest town is not the weather in your back paddock. The OGLAS Weather sensor is a station that reports your conditions to your own hub — and feeds the rules that act on them.

What it does

Temperature & humidity — ambient conditions, logged continuously.
Barometric pressure — the leading indicator of a change coming through.
Rainfall — a tipping-bucket gauge totalising what actually fell on you.
Wind speed & direction — for spraying windows, fire days, and structure-load awareness.

All of it lands in the same dataset as your other sensors, so “it rained 12 mm” sits next to “the tank rose 40 mm” and “the soil came up to field capacity”.

Temperature

Mon, 01 Jan 0001 00:00:00 +0000

Not every temperature is the weather. The OGLAS Temperature sensor watches a specific point — and tells you the moment it leaves the range it’s supposed to be in.

What it does

Reads one or more probes — a single point or several on one node.
Alerts on thresholds — too warm, too cold, or out of a band, straight to the bell or your phone.
Logs the trend — so you can see the freezer creeping up for a day before it actually failed.

Where it goes

Freezer & cool room — the classic: catch a failure before the contents spoil.
Water tank & hot water — frozen-pipe risk at one end, legionella-safe storage at the other.
Kiln, oven, smoker — confirm a firing or curing schedule held.
Engine & bearing — an overheating bearing or engine as an early fault signal.
Glasshouse & shed — keep growing or stored goods in range.

Hardware

Thermistor, RTD, thermocouple, or a digital probe (DS18B20 and friends) to suit the range, on an OGLAS analog-class node. Mains or battery depending on the site.

Frost

Mon, 01 Jan 0001 00:00:00 +0000

A frost you find out about at dawn is a frost you’ve already worn. The OGLAS Frost sensor watches the conditions that lead to one and warns you — and your gear — in time to act.

What it does

Tracks air and ground temperature — at canopy and at ground level, where frost actually settles.
Reads dew point — temperature plus humidity tells you how close you are to forming frost, not just how cold it is.
Warns early — an alert as conditions approach the threshold, not once the damage is done.
Triggers protection — fire frost fans, an under-tree sprinkler, or a heater via a Smart Switch, automatically, at 2 am, without you standing in the cold.

Hardware

Paired temperature probes (air and ground) and a humidity sensor on an OGLAS node, sited in the block you’re protecting. Battery + solar — see Off-grid power.

Air Quality

Mon, 01 Jan 0001 00:00:00 +0000

The OGLAS Air Quality sensor watches what’s in the air where people, animals, or plants are — and raises the alarm when a level climbs into a range that matters.

What it does

CO₂ — ventilation and comfort indoors; growth in a glasshouse; build-up in a confined space.
Methane (CH₄) — biogas, manure pits, and stores; this one also overlaps Safety (it’s combustible).
Particulates (PM2.5 / PM10) — dust, smoke haze, and air quality on fire-season days.
Temperature & humidity — the context every air reading needs.

Levels log to your hub with alerts on threshold, and can drive ventilation directly.