4 ms·
Be careful and make sure you have redundancy, temps in campers can go way way up with a malfunction of the fan.
by ApolloRising 9y ago
Be careful and make sure you have redundancy, temps in campers can go way way up with a malfunction of the fan.
- mikestew 9y agoA solid point. Our mitigation is that it's a pop-up VW with a canvas tent and screen windows, and curtains on the glass windows. Even in the 90s parked in direct sun it'll stay cool enough to take a nap. It'll be a sweaty nap, but no one's going to die. And the design I linked to has four fans. But now you've got me thinking about some WiFi or LTE module that monitors continuity or voltage, build a companion phone app that gets pinged when $SOMETHING goes wrong. :-) (Our use case is bluegrass festival->leave dogs in camper to see show, so we're never very far away.)
- dTal 9y agoI would measure temperature directly, rather than continuity or voltage. It's what you really care about. There exist smartphones with ambient temperature sensors; if you already have USB power, this is only a few hours of hacking.
- mikestew 9y agoI would measure temperature directly, rather than continuity or voltage. It's what you really care about. Duh, of course. That's why they don't let me design things. :-) (Though in my defense, it was an "off the top of my head in 500ms" thought.) Plenty of power available, the only issue would be connectivity, as there's about a 50% chance that any festival we go to won't have a cell signal. Which makes me wonder how hard it would be to rig something that sends an APRS message over amateur radio frequencies when a the alarm has voltage, or something. Anyhoo, this is drifting way off topic. If I get around to making something, I'll post a Show HN.