This page will show the step-by-step instructions for assembling the circuitry associated with current monitoring. Current monitoring is controled by IC1 (on the schematic), with supporting hardware. The ability to monitor its own current draw is what allows the maximum power point tracking (MPPT) algorithm to adapt and adjust as the peak efficiency point changes. [...]
This post assumes that you have already tested the power circuitry to verify the unit draws about 100 mA (1000 milli-Amps = 1 amp) or less (see the picture below). The Aruino should draw about 60 mA and the shield circuitry should draw about 30 mA when unloaded, but active. That’s how I’m getting 90 [...]
This is the fifth part of a multipart series of articles describing how I constructed the v4 Free Charge Controller kit from Jameco. See Part 4 here, Part 3 here, Part 2 here, and Part 1 here. If you have not done so yet, please complete those parts first. This section describes the assembly steps [...]
This is the fourth part of a multipart series of articles describing how I constructed the v4 Free Charge Controller kit from Jameco. See Part 3 here, Part 2 here, and Part 1 here. If you have not done so yet, please complete those parts first. When testing the charge controller, I strongly recommend that [...]
As I announced on the mailing list, I’ve been working with Jameco to develop a Free Charge Controller Development Kit (free as in freedom, not free beer). The design has been built and tested, but I’ve run into a ‘bug’ that I just can’t seem to squash. It is my hope that the community can help me get to bottom of this issue. If you have some ideas, please post them in the comments below or on the mailing list.
This post covers my attempt at modeling both the old and the new economic models discussed in Michael Bauwens article. I also discuss how the repercussion of the new economic model are captured in my drawings – the big one being that open source technology unarguably creates value at higher efficiencies (lower cost), but rarely replaces the share of market value (dollars) when it displaces proprietary competitors.
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.