A solar-powered bucket swamp cooler built for desert camping.
Burning Man Evaporative Cooler by Open-Source-Imports
https://thediyjunky.com/@open-source-imports/burning-man-evaporative-cooler
Licence: CC-BY-SA-3.0
Adapted from: https://www.appropedia.org/Burning_Man_Evaporative_Cooler
Original author: Appropedia contributors
Original licence: CC-BY-SA-3.0

An evaporative cooler built from two five gallon buckets, drier ducting and a wicking filter, run from a borrowed solar panel and deep cycle battery.
| Part | Size / spec | Qty | Unit cost |
|---|---|---|---|
| Solar panel | A few watts | 1 panel | — ^[Borrowed in the source build] |
| Deep cycle battery | 12V | 1 battery | — ^[Borrowed in the source build] |
| Fuse holder | 1 holder | — ^[Cost not recorded in the source] | |
| Fuse | 5 amp, plus spares | 1 set | — ^[Cost not recorded in the source] |
| Mylar drier exhaust tubing | 4 inch, 30 feet (10 m) | 1 length | $17.00 |
| Clear vinyl tubing | 3/8 inch O.D., 12 feet (4 m) | 1 length | $5.00 |
| PVC buckets with water-tight lids | 5 gallon | 2 buckets | $5.50 ^[Free used, or $5.50 each new] |
| Ducting adapter | 3 inch to 4 inch | 1 adapter | — ^[Cost not recorded in the source] |
| Ducting flange | 4 inch | 1 flange | — ^[Cost not recorded in the source] |
| Wicking filter | Kaz WF2 | 1 filter | $8.00 |
| ABS pipe | 3 inch, 36 inches long | 1 length | — ^[Cost not recorded in the source] |
| ABS female/female adapter | 3 inch | 1 adapter | — ^[Cost not recorded in the source] |
| Water bottle | 1 gallon, large tight fitting screw lid | 1 bottle | — ^[Recycled in the source build] |
| Dust filter | 16 x 16 inch | 1 filter | — ^[Cost not recorded in the source] |
| Galvanized wire cloth | 1/4 inch hole size, 16 x 16 inch | 1 sheet | — ^[Cost not recorded in the source] |
Required total: ≥ $41.00
11 part(s) have no price recorded, so the total is a floor.
With substitutions: $30.00