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The Solar Power Expert Blog

Introducing the v4 Charge Controller

Wednesday, March 21st, 2012

This article covers my latest efforts in the Free Charge Controller project. I’ve been working with Jameco to create a development kit for a new version (v4.01). The development kit that Jameco will soon have available for order is a huge step up from my original efforts to build a kit. The design is built on top of an Arduino and is based on Tim Nolan’s design. A charge controller schematic of the design is available.

Testing the Solar Charge Controller Schematic

Friday, October 21st, 2011

I was finally able to find some time to test my step down converter prototype. The results showed an efficiency of 71%. That’s not bad for a first prototype! Below, I’ll show all the test data, schematics, pictures, and some of the ideas I’ve come up with for improving the design.

Manufacturability of the New Free Charge Controller Design

Sunday, September 11th, 2011

My proposal for the DIY Dual Voltage Converter design for the Free Charge Controller project generated some good feedback. This post is a copy of the one of the replies and focuses on the manufacturability of the two designs and some of the different aspects of the two designs.