Electronics > Beginners
SideBySide controlboard for TFT display (DIY project)
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ebastler:
Could you simply connect all inputs of the two displays electrically in parallel? There aren't any (required) signals coming back from the display, I believe? (But have not checked that.)
ccamacho:
Yeah, but these displays need to be 1.8" so the quality and in general the way of putting the signal will be tricky, right?


I was lurking in aliexpress and I found this: https://es.aliexpress.com/item/3-69-pulgadas-IPS-pantalla-TFT-MCU-RGB-interfaz-mipi-16-millones-de-colores-480-800/32835680632.html



Do you think this control board is splitting the signal?

This will solve my problem.

Looks like it is a stm32 MCU
ebastler:

--- Quote from: ccamacho on April 26, 2018, 02:07:34 pm ---Do you think this control board is splitting the signal?

--- End quote ---

I don't think there is any signal splitting in the device you show. That one is just showing two copies of the image on the same screen, right? So the device will need to duplicate the pattern  in each scan line (repeat it twice in the output line). But it drives only one LCD, with one set of control signals. If you need to use two separate small screens, this device would not work, I think.

But if you can find a single, small wide screen LCD which you could use to display two copies side by side, this could be a solution. But come to think of it: How would this different from the simple VR glass frames which use a mobile phone for display?

An alternative thought: If you don't want a stereoscopic view, have you considered using just a single display and mirrors/prisms to show it to both eyes? Probably a more bulky solution, though.
Mechatrommer:

--- Quote from: ccamacho on April 25, 2018, 07:54:11 pm ---I need exactly the same image twice, this is for using two 12mm FL lenses and to be able to focus the screens at this small distance.
I want this for FPV not for VR.

Maybe this control board can power two screens like this ?
http://uk.farnell.com/densitron/dd-160128fc-1a/display-oled-rgb-160x128/dp/1498857?Ntt=1498857&COM=BeagleBoard

Or maybe two screens like this one: http://www.newhavendisplay.com/nhd169160128ugc3-p-5603.html

--- End quote ---
160 x 128 resolution for hdmi? you are abusing yourself... i also thought of building my own fpv, i bought some stuffs but never got the time to assemble them... just buy one of these https://www.ebay.com.my/itm/Reverse-Rear-view-Parking-Car-Monitor-Camera-ABS-4-3-HD-Video-LCD-TFT-Display/152359418163?hash=item2379543933:g:yH4AAOSwA3dYVN~5 4x the resolution and a fresnel lens, make some diy hood and done... dont torture yourself too much there are plenty of time to enjoy not to be wasted...

ccamacho:
Hey Mechatrommer!

Best answer ever!

Thanks a lot to all of you!
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