I’m building a small arduino project which is going to be powered using a small solar panel setup with a battery as it’s UPS for power backup during the dark.
The setup is going to be like
Solar panel->buck converter->battery charge module->battery->arduino
- Solar panel = 12V 250mA polycrystalline in epoxy
- Buck converter has 2 options
- Charge Module = TP5000 configured for LiFePo4
- Battery = 14500 LiFePo4 3.2V 700mAh
- Arduino = ATTiny13A
My question is should I buy the MPPT module or should I just use the dumb LM2596 buck converter module? Will the MPPT buck converter module help extract more juice out of the solar panel or will the other one do just fine?