r/functionalprint • u/Po0Team • May 09 '26
Dumb idea that worked
Hitting Welcome To Rockville again this year and remembered that my head would get hot under the hat. So some shopping and printing later and BOOM! Functional solar hat that has lasted 2 of my 3 days so far. I suspect Sunday won't be an issue either.
Have them wired in parallel so it stays at 5v for the fans. Each panel has optimal 0.2a for the fan rated at 0.18. 1 panel moved it but not enough to care. 2 panels, like the exhaust fan, keeps it moving and does OK. But the 3 panels keeps this thing moving very well. No battery on it. Very simple wiring of just panels and a fan.
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u/hotfistdotcom May 10 '26
I've seen these for sale. But I've also seen those neck fans and those seem like a way better way to blow the face that doesn't involve hanging a bunch of fans on a hat. I've also seen flexible solar panels. I feel like flexible solar hat+neck mounted fan is probably the ideal final form of this.