I collected and plotted the interior temperature of my car during a particular hot spell in mid June here in Phoenix. Here's what I got: https://imgur.com/a/1jrUH
Hardware components:
- Particle Photon
- 2 NTC thermistors (Amphenol MA100BF103A - probably overkill, but it's what I had on hand)
- 3 C batteries (the heat really saps the batteries)
Software components:
- Particle command line interface
- MATLAB
- Excel