Cumulus Support

Gina

I don't think it should be too difficult to collect the data. Wind speed and rainfall is just a matter of counting events in a given period. Wind direction converted from Gray code to standard binary. Light level is already a number as are humidity and temperature. I think atmospheric pressure will ...

Gina

For temperature you can't beat the Dallas/Maxim DS18B20 1-wire digital temperature sensor. Accurate to half a degree C and a massive temperature range (quite sufficient for freezers for instance). Just connect to Gnd pin and a digital input, with a 4.7K pull-up resistor from input to +5v. For humidi...

Gina

Here's a photo I took of my test setup for the DHT22 humidity and temperature sensor. You can also see a 1-wire digital temperature chip in a little copper P clip plus LCD display and breadboard. The pot controls the LCD contrast. Backlight brightness is controlled from a digital output with PWM. Ar...

Gina

OK, I'll post some detailed diagrams or photos of how to connect the Arduino. You might find it useful to get a breadboard and some jumper wires. Then you can easily connect things up and try them out. Not expensive from ebay. In fact there's a great wealth of Arduino compatible parts on ebay as wel...

Gina

I've got some photos too - if I can find them, I'll post them

Gina

Here's a diagram showing the construction of the anemometer using ping pong balls, bottle tops, wooden dowelling and some 6mm plastic sheet. Oh, and a tiny ball bearing, rare-earth magnet and reed switch, and some aluminium tube.. Fixed together with hot melt glue. Wonderful stuff (if you can keep i...

Gina

Diagram of the sensors at the top of the mast - wind and light sensors.

1-wire_Wind_and_Light_Sensors.png

Gina

I did a similar thing with my rain gauge but with plastic fly screen. The hole in the funnel already has a "spider stopper" and they can't get in there (but muck and leaves can block the holes! :() I have my rain gauge just about ground level to reduce the affect of wind blowing rain drops...

Gina

Thank you for your replies folks :) I've had the "up the pole" sensors working well with 1-wire software written in Python under Linux (Mint flavour :D) with local display but didn't get as far as uploading anything. The whole project went on the back burner for some time while my attentio...

Gina

This shows how I used three tracks on the encoding disc to provide 4 data bits. http://ginad.org.uk/weathergd/images/00-vane-angles-optical-11-02-07-sml.png And this diagram shows the construction details of the anemometer (made from half ping pong balls and bottle tops) and the magnetically damped ...

Gina

Here's the 1-wire circuit for the wind instruments. The vane direction is read using 4 LEDs and 4 photo-transistors with a Gray encoded plastic disc between (a duff CD with some of the coating scraped off, in fact). This resolves the 360 degrees into 16 directions - compass points. http://ginad.org....

Gina

I'm expecting to do some experimenting shortly so have started a new thread for the details of my latest weather station design.

Gina

Here's the block diagram :-

1-wire_weather_arduino_02.png

Oh dear, it hasn't come out very well

Gina

I've decided to start a new thread for this though it follows on from two (or maybe three) others. My previous posts on my 1-wire weather station contain a lot of developmental material which can simply be skipped to go straight to my present situation. I'll post details later but for now I'll just ...

Gina

Half ping pong balls make excellent anemometer cups. That's what I used for my home made anemometer with small pieces of dowel for the spokes. A half ping pong ball makes a good centre hub too in conjuction with discs of plastic. I used the same size ball bearing as in the FO units. Yes, it's the sp...

Cumulus Support

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Re: Arduino and 1-wire based home built weather station.

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Re: Fine Offset WH1080 - Spider Proof Rain Gauge

Re: Arduino and 1-wire based home built weather station.

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Re: Arduino and 1-wire based home built weather station.

Arduino and 1-wire based home built weather station.

Re: Fine Offset anemometer repair