MLX90620 / MLX90621 - 16X4 pixel IR thermal array

Community Exhibition / Gallery
6

Hello!

First, i would like to thanks maxbot for sharing his experience with mlx 90620 and arduino. It has helped me a great deal with setting up my own communication.

I have a couple of questions though:

  1. when calculating ta (sensor temp) coefficients i noticed that one should first do a sign check and then divide the result and not the other way around
  2. it was mentioned that max refresh rate is 0.5 to 64 Hz.The documentation states that maximum refresh rate is 512 Hz.
  3. when calculating the to (object temp) i noticed that alpha_ij is declared as a constant.where is this value from?this value should be calculated for each individual pixel.
  4. could you be so kind to explain the check configuration register function (CFG_MSB & 0x40) == 0?

Thank you again and best regards,
K