https://www.youtube.com/watch?v=2Qh14pX3IxA

I'd drop in a wall/ window ac unit that has a heating feature or a mini split. Hook all that up to a few solar panels and batteries and you'll be able to keep that shed temperature/humidity regulated 24/7/365.

...

The big swings in temp combined with humidity in an uncontrolled shed will simply lead to electronic corrosion and failure earlier than later.

But if you don't mind replacing those items sooner than later, whatever.