EEVblog Electronics Community Forum

Products => Thermal Imaging => Topic started by: mabe on December 24, 2023, 12:41:10 am

Title: UTi260B - very wrong Temperature
Post by: mabe on December 24, 2023, 12:41:10 am

Hi,

I have recently acquired a defective Uni-T Uti260b.

Firmware: V1.2.28

Problems:
The obvious fault of the camera is that the measured temperature fluctuates around 900°C and the image of the thermal imaging camera is completely white.

Attempted solution:
This state does not change even after a reset.

Unfortunately, the menu required for a backup or firmware update cannot be opened even after repeated attempts.

I have soldered on a UART cable and am spammed with the message in the console:


CSP2[16383] == 0.
CSP2[16383] == 0.

Unfortunately this also prevents me from logging in.

I then used uboot and the temporary manipulation of the environment variable `mmcargs` via

`setenv mmcargs 'setenv bootargs console=${console},${baudrate} cma=64M root=${mmcroot} init=/bin/sh'`

and

`boot`

into the Linux and thus have access to the file system.

Questions:
Can a firmware update help me or can I start the calibration somehow?
Can someone please point me to the right place, I'm at a loss right now.

Title: Re: UTi260B - very wrong Temperature
Post by: railrun on December 24, 2023, 01:19:14 am

I have seen a video and it looks like it helps.
Problem:
https://youtube.com/shorts/emc8_uO4HoM?si=dcLys_jYrvJaZRcF

Solved:
https://youtube.com/shorts/YlGaAy3xauM?si=SVES_4l9eWGTGWSF

Title: Re: UTi260B - very wrong Temperature
Post by: mabe on December 24, 2023, 10:21:30 pm

Thank you for trying to help but unfortunately I can't get much further with the answer.

In the videos you can see that a UTi690B has the same problem. Updating to version V2.0.22 seems to have solved it.

Unfortunately, I cannot open the update menu on my device. No matter how often I try the combination of > and <.

Are UTi260B compatible with firmware versions V2.x ?
Where can I get the latest versions that should work with the device?

EDIT: As it says in this Message https://www.eevblog.com/forum/thermal-imaging/firmware-issue-on-uni-t-uti260b/msg5058769/#msg5058769 (https://www.eevblog.com/forum/thermal-imaging/firmware-issue-on-uni-t-uti260b/msg5058769/#msg5058769) and other messages I should not try to install another version.

Title: Re: UTi260B - very wrong Temperature
Post by: mabe on December 24, 2023, 10:54:25 pm

railrun, thanks for the tip.

If you reset the device to factory settings, you can then call up the upgrade menu.

I can then at least make a backup of the file system.
All I need is a working firmware version or another option

Title: Re: UTi260B - very wrong Temperature
Post by: mabe on December 27, 2023, 10:38:15 pm

Solved my issue by replacing the following files from Version 2 to my Camera:

/root/UTi260B_Thermal
/root/tau_H.bin
/root/tau_L.bin
/lib/libirparse.so 
/lib/libirprocess.so
lib/libirtemp.so
lib/libiruvc.so

1. restart the camera
2. perform a factory reset
3. start the calibration mode (arrow down and arrow up)
4. read the calibration data

The camera then displays more meaningful data again.
I cannot yet say whether you are then calibrated and how accurate the data is.