Vegard Paulsen blogged about his soldering-iron #IoT project:
My trusty old soldering-iron recently got an upgrade!
With the help of a NodeMCU. a RGB-LED it now reports the set temperature to the #IoT Thingspeak.com server through WIFI.
It also sends me Prowl messages on my Iphone when I forget to turn it off.
It all started when I needed to fix the display on the Soldering-iron itself after some guys at the soldering-iron factory forgot to mount the segment display properly.
The road to IoT is anything but streamlined yet. The NodeMCU & Arduino IDE integration is in it early stages and the tutorials out there are few and full of frustation.