First thought. With a bit of extra coding and rearranging the display I came up with:
Top left, immediate temperature. Top right immediate percentage relative humidity.
Bottom left, maximum temperature, Bottom right, rainfall in mm.
Switched so the bottom left shows minimum temperature.
I put the sensor in the top of a freezer to check it showed negative temperatures OK.
Further thought. Do away with the humidity reading:
Now I have:
Top left, immediate temperature, Top right, total rainfall in mm
Bottom left, maximum temperature. Bottom right, minimum temperature.
Finally:
I am quite pleased with the final layout. The whole thing draws less than 80mA.
Once cased the unit will have buttons to reset max / min temperature and rainfall. On my old home brew rain gauge I reset the count at the beginning of each month and I would probably want to reset max / min temp daily.
I am bowled over by your expertise here John. The whole thing is still a foreign language - but shall enjoy the results when it is up and working.
ReplyDeleteWeaver: It's certainly keeping my brain active.
Deletelooks great! Is display only or does it keep a record too?
ReplyDeleteWilma: Display only at the moment. I'm still thinking about how to keep records with it.
DeleteThis looks sorted. I'll have to have a go at mine as it is suffering some corrosion.
ReplyDeleteAdrian: I keep thinking of new things to add. The cheap commercial ones don't really seem to last very long before they need the six inch drop test to keep them going.
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