I built this as a project for a college electronics course and had originally planned to include a clap sensor to activate the scan, but didn't have enough time or money. I'll provide an update should I decide to add it in the future.
The concept, design, and code is mine, except for the temp sensor communication code submitted by Sensorjunkie.
Cost: $70 (including Arduino Uno)
Difficulty: Basic Arduino experience is essential. Some of the electronics are not easy to troubleshoot should you run into problems.
Step 1: Materials
-- Infrared Thermometer MLX90614
-- Large Servo Motor
-- Arduino Uno Microcontroller
-- Computer Fan 12V DC
-- 12V DC Transformer
-- Through-hole circuit board
-- Baseplate (6x8in material of your choosing)
-- Nuts and Bolts
-- Various Adhesives
-- Soldering Iron
-- Hot Glue Gun
-- Drill Press