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MPPT Solar Charger – Update
It’s been a while since I posted anything related to my MPPT Solar Charger project. That doesn’t mean that no progress has been made… I’ve performed many hours of testing, pushing the charger to and...
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RaspberryPi Robot
It’s been almost two years since I did (or at least started) this project but I never sat down to document it. That’s what I want to do today. As the title says it’s about a little robot based on a...
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Free Solar Charger PCBs
A reader of this blog was so kind to send me a number of surplus boards of two of my solar charger designs. Thank you, Joachim. Solar Charger Hall of Fame [November 10, 2017] After just a few days,...
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MPPT Solar Charger – Revision F
While the solar charger was originally intended to be used as a standalone device, it can just as well be integrated into other projects. In such applications, the user interface can be left away...
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Solar Charger in Hackaday Prize Finals
I’m delighted to tell you that my MPPT Solar Charger has been nominated for this year’s Hackaday Prize Finals taking place on October 22nd. I’ve submitted it in the Power Harvesting Challenge category...
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USB Mass Storage Device Bootloader
Let’s start with a video. It will tell you most of what I’m going to write about today. That Hackaday Prize final has passed and unfortunately for me, the solar charger didn’t make it into the top 5....
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Dividing Head Controller
This post ist about the CNC conversion of a manual dividing head aka indexing head. If you’re not familiar with that kind of equipment, there’s a wiki page here. One makes use of interchangeable...
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Variable-Frequency Drive
I’ve just finished the variable-frequency drive (VFD) for my 1970s Schaublin 102 lathe. Before I dig into details, there’s a youtube video here: My new VFD drive in action I bougth this lathe around a...
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Universal Interface
The Universal Interface It’s time to present a relatively simple yet useful device: the Universal Interface. The need for this little helper arised when building the control for my CNC milling...
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Stepper Motor Controller Rev B
Looks almost like the first version This board may look familiar to some of you. Because at first glance, it looks just like its older brother described here: Dividing Head Controller. But many things...
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