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Arduino
From: ANT_THOMAS
19 Jan 2015 12:02
To: Chris (CHRISSS)
191 of 542
40898.191
In reply to
40898.190
I think I'll initially have the time zones set to dawn/dusk times around spring.
If there's enough space on the arduino I could have a more complete set of times, maybe covering 4 seasons. There's probably a way to calculate this and massively reduce the amount of code but I'm just using set values at the moment.
This doesn't account for the northern hemisphere being different to the southern. That would probably mean I'd need about 72 regions for it to look reasonable - 24 Northern, 24 Equatorial, 24 Southern. I think that would be overkill.
From: Chris (CHRISSS)
19 Jan 2015 14:35
To: ANT_THOMAS
192 of 542
40898.192
In reply to
40898.191
Not a great deal of memory available on the Arduino. Unless you added an SD card to it if the data takes up too much space. How much do you think you'd need for it? How much difference is there between the hemispheres?
From: ANT_THOMAS
19 Jan 2015 15:00
To: Chris (CHRISSS)
193 of 542
40898.193
In reply to
40898.192
There's definitely quite a bit at the extremes (summer/winter)
Today
June 19th
From: ANT_THOMAS
19 Jan 2015 15:18
To: Chris (CHRISSS)
194 of 542
40898.194
In reply to
40898.192
http://www.solarsystemscope.com/daylightmap/
Go there
Click Set Time
Press and hold the plus button on months and see how much it changes.
Or set it to 22nd March and pan through the hours, that's probably what I'll be going for.
EDITED: 19 Jan 2015 15:21 by ANT_THOMAS
From: Chris (CHRISSS)
19 Jan 2015 15:40
To: ANT_THOMAS
195 of 542
40898.195
In reply to
40898.194
Quite a lot then, yes. Worth doing on your map then
;)
Best way would be to use Einsien's equations for general relativity, give the Arduino the spacetime coordinates for the sun and every led on the map, and let it work it out. Simple
:D
From: ANT_THOMAS
19 Jan 2015 22:57
To: Chris (CHRISSS)
196 of 542
40898.196
In reply to
40898.195
The RTCs arrived today (10 days) - annoyingly without any pins but I have a load of spares anyway
I've sorted the time side of things and it seems to be working on my small 6 LED setup.
From: Chris (CHRISSS)
19 Jan 2015 23:12
To: ANT_THOMAS
197 of 542
40898.197
In reply to
40898.196
Both my RTCs came without pins. One from this country with a battery and one from foreign. There are 2 sides the pins can go so maybe they leave it up to you to decide. They're nice and easy to use anyway. Not sure what to do with my spare yet.
I'm currently making a breakout board for my LCD screen with contrast pot, PWM transistor and shift register attached. It will make it much easier connecting it up to my Uno.
From: ANT_THOMAS
19 Jan 2015 23:30
To: Chris (CHRISSS)
198 of 542
40898.198
In reply to
40898.197
Sounds like the same type as mine (the cheapest!).
I didn't want them soldering, I just want the free pins!
From: Chris (CHRISSS)
20 Jan 2015 00:09
To: ANT_THOMAS
199 of 542
40898.199
In reply to
40898.198
Most of the bits I've bought have been the cheapest. So far no problems with them. These prototype soldering boards I've bought are very flimsy though.
So you wanted the pins for later, not for the RTC?
From: Chris (CHRISSS)
20 Jan 2015 02:21
To: ALL
200 of 542
40898.200
Here is my LCD board. It's not pretty, front or back. But does it work? Not sure if it works yet. And a picture of my "workshop."
Attachments:
IMG_20150120_011718~01.jpg
IMG_20150120_011727~01.jpg
IMG_20150120_011740~01.jpg
IMG_20150120_011809~01.jpg