Interesting idea, but since you don't want the precise temperature just what's hot or not how about a thermal imaging camera, they are just hundreds of $ not thousands nowadays, you can even strap them on your portable telephone:
Seek Thermal Imaging Camera for Android Galaxy 3 4 5 UW AAA Heat Phone Camera | eBay
Seek Thermal Imaging Camera for Android Galaxy 3 4 5 UW AAA Heat Phone Camera | eBay
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.