I had a need for a temperature scanner to troubleshoot overheating on my Duramax LB7 pickup while towing. A commercial solution to collect 6 temperatures may have run me over a thousand dollars so I ordered some thermistors and for about 40 bucks in parts made one myself.
Parts include an Arduino Pro Mini and a Nokia 3310 graphical LCD screen.
Here is the schematic: Arduino 6 Temperature Scanner
Here is the sketch and LCD library for Arduino: Nokia_Six_Analog_Display