MLX90640 "Parameter extraction failed"

Sensors Distance
1

Hello,

I’m using a Teensy 3.5 with the MLX90640 110 FOV sensor and I can not get the examples working from the Sparkfun header files. I’ve tried different I2C bus pins, and the only ones that are detecting are from pins 18 and 19. But even so, I only get “Parameter extraction failed” and each pixel reads nanC. I also purchased the Sparkfun Grideye IR sensor and that one works fine on the same I2C bus lines with the same Teensy, so I know the board is fine. Is there anything that I need to change on the code? Or maybe the sensor is faulty?

Any help is much appreciated,

Raymond Downing

2

Hi Raymond.

“Parameter extraction failed” would mean there’s something not right in the MLX90640 chip. If you can fill out the [form on this page with your order information and the URL for this forum post in the “Why do you want an RMA?” section, we can get you fixed up. :-)](Return Policy - SparkFun Electronics)