What’s the weather like?

What’s the weather like?

The other day a friend was discussing a system he has that records the temperature. This set me off thinking about recording the temperature myself. What would I need? I’d done some amateur electronics in my university days using something akin to the Netduino (an Arduino derivative that runs a micro form of .NET) so started looking at what those offer. Of course I found I could get all the parts, but for what I had in mind I’d need at least two devices, a remote sensing device and some kind of base station. I’d also need some way to transmit between the two, and finally I’d also need to power both. A lot of effort for a thought tangent.

My next thought was, surely there’s ready made kit for this? Turns out there is.

Thus I stumbled into the realm of Automatic Weather Station (AWS) hardware and software. There’s a lot out there depending on how much you want to spend. I initially looked at just temperature recording which started at around £25 however it soon expanded into wind, rain, light and so on and before I knew it I’d spent £90 on a complete kit.

What I ended up with is an Excelvan WH2310 which you can see in the picture attached to this post. I’ve included the station specification below for those who like the fine details. It comes with some software and I’ll let you know how I get on with setting it all up.

Outdoor data:

Transmission distance in open field : 328ft max
Transmission frequency: 433MHz
Temperature range: -40℃ to +60℃
Resolution: 0.1 °C
Measuring range rel. humidity: 10%~99%
Rain volume display: 0-9999mm
Resolution: 0.3mm(if rain volume<1000mm), 1mm(if rain volume>1000mm)
Wind speed: 0-50m/s(0-100mph)
Accuracy:+/-1 m/s(wind speed<5m/s), +/-10%(wind speed>5m/s)
Light: 0-300k LUX
Accuracy: +/-15%
Measuring interval thermo-hygro sensor: 48 sec
Measuring interval UV sensor: 60 sec
Measuring imteral light sensor: 60 sec
Water proof level: IPX3

Indoor data:
Pressure/temperature: 48 sec
Indoor temperature range: -10℃ to +60℃
Resolution: 0.1 °C
Measuring range rel. humidity: 10%~99%
Resolution: 1%
Measuring range air pressure: 300hPa-1100hPa(8.85-32.5 inHg)
Accuracy: +/-3hPa under 700-1100hPa
Resolution: 0.1hPa(0.01 inHg)
Alarm duration: 120 sec

Power supply:
Main station: 3× 1.5 V AA batteries (not included)
Remote sensor: 2× AA rechargeble batteries (included)

Main station: 175x145x52mm

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