What I want to do
Roughly measure the rate of change in the reading from the MLX90614 as distance increases, and to use Lego pieces to do it.
A theoretical discussion can be found in this Arduino forum post, but I thought it'd be nice to see it in action.
My attempt and results
A video of my experiment is up on YouTube:
Each quarter turn of the Lego device is approximately 7mm further. The baseline measurement was at approximately 1cm.
Questions and next steps
- Audio feedback
- Output serial to Raspberry Pi
- Averaging temperature
Why I'm interested
Folks need to know how sensitive this device is in order to use it. Holding the Thermal Flashlight a centimeter away from the object will give different results than 3 centimeters, possibly enough to affect decisions, so users should be aware of that.