A 75 watt MPPT Solar Charger with tons of features. Efficiency > 97%, USB interface, data logging, 2 USB charging ports and much more…by Lukas Fässler
This is an open source project that I’ve been working on for several years now. From its modest beginnings it has evolved to a rather sophisticated device with a USB interface, powerful USB charging ports, a 20×4 character LCD, a rotary encoder with push button, precision measurement of everything from temperatures, voltages and currents. There are 4 switchable power outputs, a year’s worth of data logging with real time clock and calendar. It connects to a desktop app via USB where users can monitor and adjust every aspect as well as see what the charger did while they were away.
Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)
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