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EVB90614
Evaluation board for MLX90614
 Download EVB90614 Datasheet (PDF)
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EVB90614 General Description
The EVB90614 evaluation board is an easy interface between the MLX90614 infrared thermometer in TO-can and a PC. The evaluation board and it's software enables the user to make temperature measurements using a PC interface.
With the evaluation board the user can also reconfigure the MLX90614 infrared thermometer for different applications by modifying the interface type, temperature ranges, refresh rate an integration time.
EVB90614 Features and Benefits
- USB interface to computer. HID compatible, no drivers needed
- Allows easy reconfiguration of the MLX90614
EVB90614 Environmental Information
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EVB90614 Frequently asked Questions
MLX90247 RoHS Status
Answer
Melexis confirms that the MLX90247thermopile devices, the MLX90614 and MLX90615 infrared thermometer sensor family and the EVB90614 and EVB90615 are RoHS compliant.
Help about PIC MCU control MLX90614
Question
I have bought MLX90614, I want to use it to develop an smart equipment / used to heat the flowing liquid.
I use PIC16F877A to control it.
But I can not found any sample code about PIC connect MLX90614.
And I found EVB90614(Evaluation Board for the MLX90614). It use PIC18F4550. It is very well. but it not give the microcontroller firmware(ASM).
Could you give me the microcontroller firmware of PIC18F4550 in EVB90614. Or other sample code use 16F877A connect PIC with MLX90614.
Email:yacoyacoyaco@163.com
Trouble with EVB 90614
Question
I've just bought an EVB 90614, but i can't connect it with the PC using your software downloaded from your site.
When I plug in the usb cable the functional led on the evb90614 turn blue; after that when i start the pc software the led become green and then red.
The error that pops up is 'connection time out error';
On the message log i found a 'boot not present' error.
What can i do?
Can i have the .hex file of the firmware of the evb90614 (i suspect that the evb90614 is not be programmed)?
Question
I try to explain my problem better.
I've bought an EVB90614 from DIMAC red S.r.l. BIASSONIO Milan ITALY.
I've bought three MLX90614 AAA 5V window inside non automotive too.
ORDER OF ACTION:
1 - I connect the EVB90614 with the MLX90614 plugged in to the USB socket on my pc (i've windows xp home). The led on the EVB90614 turn on blue.The evaluation board is correctly recognized fron the PC as a generic HID device and the standard windows driver is associated to the device.
2- I start your sw MLX90614 configurator version 1.05.01; the sw tries to find the evb90614. For a while the led on the pcb turn green then becomes red definitely.
3- a pop up window comes out with the message "Communication error - time out"
on the console board i find the following messages:
"
[17:44:50] PSF initialized
[17:44:50] Bootloader is not active
[17:44:58] Communication error - time out
"
OBSERVATION:
i try to change the sensor, the usb port, i try the version 1.00.1a of the sw, but nothing seems to make a change.
Question
for your help to solve my problem.I appreciate very much it.
I'm sorry to tell you the I'm not able to work with EVB90614 yet.
I succeded in upload the new firmware that you send to me, but after that, the SW (i'm using the correct version 1.05.10) tell to me that the device name is not EVB90614.
If I try to communicate it says that maybe i've uploaded a wrong .hex
Maybe a corrupted .hex file?
Question
I want to thank you for the speed and quality of your service.
My EVB90614 is been replaced, and the new is perfectly working.
Thank you very much to DIMAC Red too.
MLX90614 Slow to Reach Temperature
Question
Indeed, there is no electronic on the MLX90614 that would take so long to react. On-chip digital filters settle within a second with their maximum settings (refer to Application Note "Understanding MLX90614 on-chip digital signal filters" for details). It is really possible, though, that external filtering (such as the moving average) might take much longer. Mister Watson, is there any filtering added to temperatures, read from MLX90614 in your application??
There are, however, thermal effects, that might also take that long. Please note that all accuracy specifications of MLX90614 are valid under isothermal conditions. I would need details about your application before I could try to tell if there is something resulting in thermal gradient over the MLX90614. I sent you a mail about that. I will also need to know the version of the device you have, and I would also appreciate if you could send me the device EEPROM. I would also like to know if you use the EVB90614 or you read the MLX90614 with another SMBus Master?
Emissivity adjustment for MLX90614
Question
You can easily change the emissivity with the EVB90614 without going into details. EEPROM value can be found as follows:
Factory default 0xFFFF (emissivity 1.000) ; Ke=DEC2HEX{ ROUND[ E*(-1+2^16) ] }
where "ROUND" represents round-off without truncation. For example, if you have an object with emissivity of 0.612 the value to be written in EEPROM address 0x04 will be 0x9CAB.
Question
Thank you for the advice! As a matter of fact we are just preparing a new release of the data sheet so we will have the chance to add that information soon. As the EVB90614 is provided as a standard tool that supports customization of the MLX90614 we have implemented emissivity compensation configuration in that tool. It is simple and straight-forward and the customer needs to go in no details about the device specifics.
Distant temperature measurement
Question
we want to use MLX90614DAA to measure the body temperature of a baby. The distance from the device to baby's abdomen may be about 30cm to 50cm. Is it possible to obtain an accurate reading? Any suggestion?
Is it possible to get an evaluation board EVB90614 with medical high accuracy sensor MLX90614DAA on the board?
Answer
With a distance of 30-50cm, the area observed by the MLX90614DAA is also about 30-50cm in diameter. That is probably too big for babies.
Your first option is to reduce the distance.
The other option would be to use the MLX90614|BCC which has a smaller FOV (35 degrees). However, at this moment we do not yet provide this sensor with medical accuracy calibration. This is still under evaluation.
You can order the EVB90614 with our local representative. If you specify that you want some MLX90614DAA or MLX90614BAC with it, we'll include these at no extra cost.
MLX90614, PIC MCU and software?
Answer
The software of the EVB is intended for use on a PC and the EVB90614 with the USB interface. The software is not for the PIC microcontroller.
Buy EVB90614
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