Hi, for my Arduinos I want "Free Energy" :slight_smile: I bought two solar panels rated 6V 500mA 3Watt (15cmx16cm each). When directly pointed to the sun its 7.1V open circuit and 450mA short circuit. To optimize power transfer I want an MPPT...BUT I googled a lot and found a lot of MPPT schema…

MPPT - but with low voltage input (max 7V) and low power transfer ( ~3W max) - #9 by system - General Guidance

Topic		Replies	Views	Activity
Solar MPPT Regulator/Charger General Guidance	12	4868	May 5, 2021
12v Lead Acid Battery charger General Electronics	4	6166	May 6, 2021
Which charge controller & battery to use with DIY solar panel? General Electronics	11	2451	May 6, 2021
Arduino Solar MPPT battery charger General Guidance	13	25492	May 5, 2021
Solar/MPPT charge controller idea General Electronics	2	1781	May 6, 2021