Started the 2014 summer season

19 April 2013. collector is filled with water.

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Solar collector controller v1.2

There has been an improved solar control version. The program can write here. PCB is universal and can be adapted to the changing program of your needs. Arduino is the standard 5-key pad (A0) connector 16×2 LCD display (LCD LiquidCrystal (A5, 3, 4, 5, 6, 7)), the display backlight is turned on / off programmatically (D8), connect ENC28J60 network module (CS-D10 SI-D11, D12-SO, SCK-D13), three outputs DS18B20 sensors (D2, D9, A3). Relay connection for A1, A2. The controller is looks like :
20140316_113344

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The new version of the solar collector controller

There a new simple solar controller version. Changes: added 5 button keyboard, added connection for network module, added LCD backlight on / off. zir3
More knowledge will be presented later.

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DIY boiler heat exchanger test

Boiler heat exchanger made ​​of 5 m 1/2 “section of corrugated stainless steel pipe. Between the inlet and outlet coolant at around 4 degrees difference.
Gyvatuko_testas

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Manufactured controller printed circuit board (PCB)

2013.05.02
Already made ​​a controller printed circuit board (PCB):

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