Go to advanced search

by nuis
Tue Jun 09, 2015 10:56 am
Forum: Beginners
Topic: Need help on HDMI timings. HDMI->VGA->RGsB LCD(w. datasheet)
Replies: 0
Views: 597

Need help on HDMI timings. HDMI->VGA->RGsB LCD(w. datasheet)

Hello, since some days i am trying to get an old automotive display in my car working with the raspberry pi. The controller needs a RGB signal with a composite synchronisation on the green channel. The Resolution is a tiny 400x240 pixels, so i have to go with manual hdmi timings to drive it. I have ...
by nuis
Fri May 22, 2015 2:09 pm
Forum: HATs and other add-ons
Topic: Gert's VGA add-on for the B+
Replies: 240
Views: 117040

Re: Gert's VGA add-on for the B+

So please tell me if my thoughts on the sync are right. Lets say the picture is black so the voltage of the colour signal is 0. Now the H-Sync pulses make it negative by (guessing) 1v. So at H-Sync pulses the colour voltage is -1v. Now there are also the V-Sync pulses from time to time that also mak...
by nuis
Fri May 22, 2015 12:26 pm
Forum: HATs and other add-ons
Topic: Gert's VGA add-on for the B+
Replies: 240
Views: 117040

Re: Gert's VGA add-on for the B+

Hello, i would need to get a rgb signal combined with a composite sync on the green channel. I am aware that it can be done right after the analog conversion with a quite simple circuit but would love to send the signal properly right away. Is it possible to change the colour signal software wise be...

Go to advanced search