I’m looking at building an outdoor enclosure for a Raspberry Pi, dongle, and long-range wifi adapter. There are two places that it could be located, one is in direct sunlight and the other would be shaded by a solar panel, but still exposed to 100F temperatures in the summer.
In testing, the entire system is drawing 3-5 watts which would mostly be dissipated as heat inside the enclosure. This is fine in the winter when the heat will help keep everything a little warm and fight condensation, but in the summer this could become an issue.
Is it better to have a vented enclosure for better heat dissipation, or a sealed one to keep moisture, dirt/dust, and critters out?