How to make very small, simple and cheap PWM solar charge controller with Arduino Pro Mini for 12V off-grid installations. The size of circuit board is the same as size of Pro Mini board, so they can be sandwiched together. PCB plans are for universal prototype board.
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Archives For Pro Mini
Here you can download latest version of verified & working Windows 7 driver for Mini USB 2.0 to TTL 6Pin CH340G Converter sold as BTE13-009/USB.