Attiny13 solar tracker project
If you want to harvest solar energy efficiently you need to direct solar cells directly to sun. You can’t stand near and adjust solar panels by yourself. This is where solar tracker device comes handy. Cuningan is building solar power plant and have constructed simple solar tracker circuit based on Attiny13 microcontroller. WPvideo 1.10 He uses two light dependent resistors connected as voltage divide to single analog input. Ideally when both resistors get same amount of sunlight this means that solar panels are oriented optimally. And if one of resistors start getting less sun in time – microcontroller moves panel with motor connected through H-Bridge. Sensitivity threshold can be adjusted with potentiometer so it would react only when significant change of light is detected....
Source: Embedds.com - Thursday, 15 September, 2011
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