Due to the popularity of the Coronavirus Doorbell — a device to detect high fever with IR — I’ve received lots of messages asking for instructions and also for good providers of electronic parts.
Code can be found at Github and enclosure files at Thingiverse. Regarding electronic parts, there are lots of web sites but only a few with huge catalogs and good prices.
UtSource has good offers like a package with 24 Arduino sensors for $26 and also supplies to develop Covid-19 devices.
Buy electronic components on www.utsource.net