Czech mirror in IKEA LILLÅNGEN

[sero]

Hi Tomas,

your mirror looks great!

I´m planning to do the same (and I even looked at the same Ikea mirror :) ) and was wondering how you solved tha backlight handling exactly.

You talked about an invertor in one of your posts. My controller has an invertor, too. Can you tell me if your solution would work here aswell?
This is the board with the controller: http://www.ebay.de/itm/TV-HDMI-VGA-AV-USB-AUDIO-control-board-for-15-6-B156HAN01-2-1920x1080-IPS-LCD-/361128251020

Thanks :)

[TomasZmuda]

Hi Sero,

your inventor has 6 cables, so one of this should be backlight controller. I can’t help you more, you have to measure it by voltmeter or oscilloscope.

Tomas

[sero]

Thanks Tomas,

unfortunately I don’t have a voltmeter or an oscilloscope at hand. I hope I’ll figure it out somehow :/

Sebastian

[KirAsh4]

Without the proper tools or instruments, you have to be really careful that you don’t short out the inverter or cause other damage.

[sero]

I found the description of the board and pins:
http://www.vslcd.com/Specification/T.VST29.03.pdf

“CN2” describes the pinout for the invertor.
Pin 3 is backlight on/off and pin 4 is for the adjustment of the brightness.

[TomasZmuda]

Perfect, you could only unplug this cable and the LCD shound be without background. It’s simple test. :) Next plug this cable to PIR output and as i wrote in first post, don’t remember hook up ground between LVDS and Raspberry.

[MrH]

I just posted a question about PIR connection to a similar board. Feel free to help me out guys :)

https://forum.magicmirror.builders/topic/503/pir-sensor-to-cut-backlight-power

@TomasZmuda if you look at my option 2. do I need to ground inverter and Pi?

thanks!

[sero]

@TomasZmuda
I tested unplugging pin 3 and you are right: the display / backlight ist switched off 👍
I also got me a voltmeter and checked the currents :) seems to be identical to your setup. So next, I’ll connect a PIR, check the current and connect it as you described.

Thanks!