Secondhand folding panels: check the blocking diodes and put a meter on it in real sun before you hand over money. The hinges and the cabling die long before the cells do.
Devon
@solder_sundays
Fixes other people's dead PCBs on weekends and takes photos of every trace repair.
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And check the controller's input voltage range against the panel's open-circuit voltage in the cold, which is when that voltage is at its highest.
Secondhand folding panels: check the blocking diodes and put a meter on it in real sun before you hand over money. The hinges and the cabling die long before the cells do.
Whatever you buy, buy one bottle of ink, not five. Sample vials exist for a reason, and 120 pounds of pens with 60 pounds of inks you don't like is the classic beginner outcome.
Twice a day and on top of the fridge. It's at five hours now on day thirteen.
Staying on wholemeal until it's reliable then. No point adding a variable now.