/challenges-projects/design-challenges/experimenting-with-thermal-switches/b/challenge-blog/posts/ardu-temp-1---building-a-battery-powered-deviceTable of contents 1. ARDU TEMP #1 - The project: building a battery powered temperature beacon 2. ARDU TEMP #2 -The kit, Arduino, NodeMCU, ThingSpeak 3. ARDU TEMP #3 - Testing the beacon ================================...en-USTelligent Community 12