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A project log for Solar MPPT Charger for 24/7 "IOT" devices

An inexpensive charge controller and 2A 5V power supply designed to supply remote power for devices ranging from Arduino to Pi 3 class.

Dan JulioDan Julio 10/22/2019 at 17:180 Comments

It has been a long arduous task to get here but I finally have some production boards.  After slow progress with Crowd Supply, I got caught up in the trade-war between the US and China and my  parts were stuck in customs.  $600USD to get $2100 worth of parts out.  Ouch.  This is partly my responsibility though because my Contract Manufacturer told me to use FedEx to ship parts to him but the cost was so much more (hundreds more) than USPS that I went the cheaper route.  He said there would have been no import levied had I used FedEx.  Later we learned that using his FedEx account would be cheaper than paying in the US.  These are strange times we live in.


I received a total of 50 untested boards from the CM that I used to validate test manufacturing test fixture.  I didn't want to ship a test fixture to the CM that didn't work when exposed to a larger variety of boards.  But it works fine and all 50 boards were tested, programmed and calibrated.

Now the test fixture will go to China and I should receive completed board assemblies in the future.  Or ship them to Crowd Supply for distribution there.  Yeah! 

In celebration I'm making the initial production run available to the tindie customers who have been patiently waiting.  Thank you.

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