mppt_kicad_schematics

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README

Based on https://www.instructables.com/DIY-1kW-MPPT-Solar-Charge-Controller/ Since I wanted to be able to change the board layout and to test KiCad I decided to give this "conversion" a try.

I removed the keyboard pullups, they are not needed when activating the internal pullup. And I prefer switching to ground anyway, so I can use 5V for the display and the keyboard.
I changed the footprint of the screw terminals, since I did not find any other (trustworthy) 50A capable terminal. https://www.degson.com/content/details_552_880568.html
Added JTAG interface
Added a SD card and IIC socket, mainly for a RTC module. Should allow for much better offline logging.
Switched to 1.27mm pitch smd connector. No need for 2.54mm. Just uses up too much space - on both sides of the board. Also added a few spare IOs and IIC.
Fan driver transistor. ToDo: Maybe better switch +, and not GND. Although switching ground allows for more flexibility regarding fan voltage.
Had to divide GND into GND and GND2, so I could add the GND copper bar to the schematics and the layout without getting too hacky... Found no better "KiCad way"
3D models are almost complete. SD card is not perfect.
Switched to USB-C

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