MLX 90614 Problems Labview | LabJack
 

MLX 90614 Problems Labview

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Vancage
Vancage's picture
MLX 90614 Problems Labview

Hello,

On the Labjack homepage I found the example for the sensor MLX90614 with the UE9. I connected everything with the T7 Pro (SCL FIO0, SDA FIO1) and used the LabView Vi "I2C EEPROM Read" to get some Data. 

When i start to read out the Sensor, all Data i get is FF. 

I thought that the Sensor is not running correctly, but when i use a Arduino to get some data, it works fine.

Maybe someone can help me with my Problem. I think i´ve set something wrong but i just don´t see my mistake.

 

Thank you very much for your help

Vancage

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LabJack Support
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Hello,

Hello,

From the screen shot that you sent over, it looks like there may be a few things going on.  First and foremost, it looks like you aren't getting any received ACK bits.  There are some helpful pointers in the I2C FAQ/Common Questions section in our I2C App Note (scroll to the bottom of the page).  Additionally, have you gone through our MLX90614 app-note?

You likely have the pull-up resistors installed if you are getting data using an Arduino, however the following comments apply:
1. I suggest switching to an EIO/CIO/MIO line if that is an option.
2. Double check the slave address you are using.  The UD library requires a using a 7-bit slave address that is shifted over by 1 bit.  You should use the slave address 180 instead of 90.

Hopefully this gets you going in the right direction.