I have several old laptop screens but to use with the rpi s it needs a “controller” that takes the HDMI signal from the rpi4 and sends it to the removed laptop screen from an old laptop.
I did see a universal one with a remote control tho i can not find it now.
They have them on ebay and you send in the numbers on back of monitor screen, eg. [B116XW03 V.1]
a) does anyone know what i am talking about
b) they are like $50 hoping for cheaper
**C) CAN I MAKE one???
:- like using a zero or micro controller or is it a totally different thing all together?