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Electronics => Repair => Topic started by: Raj on December 27, 2023, 05:10:17 am

Title: (no longer) need pinout of rts5803, Uni-T IR cam self destructs (solved)
Post by: Raj on December 27, 2023, 05:10:17 am
So, I have a uni-t UTi260M
It was working until I dropped it.
opened it to find disconnected pcb to usb-c connector cable connector and noticed how sharp of a turn the cable made. reconnected it
then after a while, it stopped working again. Opened it to find that at a pinch point, the cable broke completely. It was made of flex PCB and was pre pitched from factory

can see the breakpoint in photo.

Have you guys had any luck, trying to get replacements from Uni T?
Title: Re: Uni-T IR cam self destructs
Post by: Raj on December 27, 2023, 05:11:45 am
if the breakpoint isn't clear to you
Title: Re: Uni-T IR cam self destructs
Post by: Raj on December 27, 2023, 05:17:53 am
Could it be, it's a standard phone connector, epoxied into their connector holder
Help if you recognise it

Otherwise I'd have to resolve to soldering wires from electromagnet to connectors to make my own cable which is pain in the cunnilingus
Title: Re: Uni-T IR cam self destructs
Post by: BlownUpCapacitor on December 27, 2023, 05:46:19 am
Is it at all possible for you to repair the tracks on the flex PCB?
Title: Re: Uni-T IR cam self destructs
Post by: Raj on December 27, 2023, 03:08:50 pm
Is it at all possible for you to repair the tracks on the flex PCB?
pretty hard. my success rate is 1 in 8
Title: Re: Uni-T IR cam self destructs
Post by: Raj on December 28, 2023, 03:49:13 pm
Failed at flex pcb repair.
Maybe I should work at the other end where I can see a chip labeled Realtek rts5803 (it's an USB2.0 PC CAMERA CONTROLLER WITH COLOR PROCESSING)
Title: Re: need pinout of rts5803, Uni-T IR cam self destructs
Post by: Raj on December 28, 2023, 04:18:54 pm
What the connector boils down to.
Man, USB c is so confusing
I wish I knew more about it.
Usb 2.0 used to be so simple with 4 wires, here, there are multiple.
I know, the chip used in it is USB 2.0. i wonder if i can just cut open the USB A end of USB C otg connector and solder them to have em working

Apparently there are 6 wires going out of the usb connector into the camera's connector
Title: Re: need pinout of rts5803, Uni-T IR cam self destructs
Post by: Raj on August 16, 2024, 01:14:28 pm
Somehow got it to work on windows, and it shows up as normal camera but it doesn't work on the android app that it used to work with (uni-t thermal) and neither with otg view. Kind of unexpected.
Title: Re: need pinout of rts5803, Uni-T IR cam self destructs
Post by: Raj on August 16, 2024, 01:17:41 pm
First thermal selfie after repair. :-+
There is a wire that used to run from Camera PCB to usb and connect either to sbu or cc. (I do know, one of those is for letting the phone know of connector's orientation but I'm using an OTG cable here.) Maybe that's the culprit for it not working.
I wonder if there's a windows app that can map temperatures for this thing. The fact that Windows can capture it without needing drivers says quite a lot for windows 10 before it became a spyware.
Title: Re: need pinout of rts5803, Uni-T IR cam self destructs
Post by: Raj on August 16, 2024, 01:32:29 pm
For reference sake, here's the scan of old ribbon cable.
Title: Re: need pinout of rts5803, Uni-T IR cam self destructs
Post by: Raj on August 16, 2024, 02:06:36 pm
Nevermind. rebooted my phone. Earlier the video stream was blank and it showed 0 degrees as temperature  :bullshit:. but after reboot, it works.  :phew: