Ok, this blog is meant to post content related to the progress of my little garden monitor.
Objectives:
- Low power node (using an atmega chip)
- Measures: temperature, humidity, luminosity, soil moisture
- Reports it back to a central node (via nRF24L01+ modules) at specified time intervals
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October, 25th 2013
And here is yet another iteration, this time it was validated through Seeedstudio DRC's rules (I'll probably have them made there if the breadboarding passes the tests) and also had the input/tweaks of Great Eagle Master Bajdi!
(click to enlarge)
I had to “ugly up” the schematics part… because I was having an error I couldn’t make go away, and well since the layout is more important in the actual board I didn’t cared much.
(click to enlarge)
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October, 22th 2013
Ok, I finally “finished” the circuit (for examining & testing) and took a stab at a complete board routing.
(click to enlarge)
(click to enlarge)
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October, 17th 2013
After, some slow iterations over the last few days I further modified my initial (and incomplete) schematics draft into a Rev. 2 where I hope I’ve included everyting I want/need on this board. I may cut stuff out if I find I can’t route everything into a desirable footprint.
(click to enlarge)
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October, 12th 2013
Currently I’m at the stage of circuit design/breadboarding tests. Also I already have code to take all measurements, now I just need to mesh it with RF24 code and try to make it as small as possible so it fits an atmega8 (preferably).
This was my first tentative circuit (rev1):
