Yes, I am still considering a backup power supply. More so than ever. I would probably need some sort of switching converter instead of a linear regulator. It's out of my comfort zone, but that's the fun of it all. I'm still looking at the MAX8934G as a possible solution for charging and regulating in one little IC. It's a 28-pin 4mmx4mm TQFN package that could easily fit in my PCB design.
loupurdie wrote:I understand silicon is standard material of solar cell which is just can not be manufactured at home so you must buy it, but can i make my own solar panel made of any insulated materials such as plywood or painted plain G.I. sheets with welded metal frame?
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