Guru
Joined: 07/08/2011
Location: AustraliaPosts: 6624
| Posted: 09:10am 03 Mar 2012 |
My offering is similar.
I use mainly analog sensors because that's what I was using with an old system that used a parallel port ADC module.
Temp sensors for hothouses, instrument case and ambient are LM335
I have a HIH-4030 humidity sensor from Ocean Controls (Analog output)
Argent data wind and rain.
I get a lot of spiders stopping the rain gauge from working.
I will put it into a larger cabinet with a big funnel to improve the sensitivity and have room to screen the spiders out (I hope).
Using am 8 inch funnel will bring the resolution from 0.3mm to well under 0.1mm
I have 2 water flow meters for bore pump and garden water flows.
With the 2 other counter inputs used for rain and wind speed, I have run out of counters.
Serial output is going to go to an XPORT serial to Ethernet module so I don't have to have a PC in the shed.
There is an output to switch the bore pump on/off and another one will be for watering the hothouses.
Yet another output is for load-shedding. If the backup battery gets low, the security cameras and some other equipment gets switched off.
When I go walkabout, I want the system to be able to survive long power outages.
By the time you add battery voltage monitoring and a voltage reference, I have run out of inputs.
I might have to switch over to a UBW32.
I use a laptop to interrogate the Maximite and do the main data-logging. It then emails me with the daily readings for when I am not at home.
The laptop also keeps the time correct on the Maximite which gains about 1 second a day.
The 'normal' PC draws the pretty graphs.
Today was not a good day for showing of the weather!
Jim
VK7JH
MMedit