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Step 5Finishing Up
Now that you have your frame and everything built, we will make that reflective shroud I mentioned. I did this by cutting four pieces of foam that were half as wide and a bit longer than a side of the Peltier, gluing them on in the formation that you can see, and double-sided-taping aluminum foil to the inside. Hint: Mylar from the inside of potato chip bags is a better reflector.
I actually extended it so I could put a plexiglas window to trap the heat, but it was right at the focal point so it distorted the lense... maybe I'll drill a hole.
To give the fan some extra power, I wired together a 3v 150ma solar panel for $3 and used skewers to hold it up, and put it in series with the Peltier. Power for usable applications can still be drawn from the + and - of the peltier because the solar panel is just for the fan.
I used springy-wire splicy things to connect the wires. The circuit has the peltier and solar cells in series to generate ~5V for the fan.
I actually extended it so I could put a plexiglas window to trap the heat, but it was right at the focal point so it distorted the lense... maybe I'll drill a hole.
To give the fan some extra power, I wired together a 3v 150ma solar panel for $3 and used skewers to hold it up, and put it in series with the Peltier. Power for usable applications can still be drawn from the + and - of the peltier because the solar panel is just for the fan.
I used springy-wire splicy things to connect the wires. The circuit has the peltier and solar cells in series to generate ~5V for the fan.
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