Question about the resistor ladder #91
Description
Hi
As mentioned in the video, the vga signal must be between 0 and 0.7V.
the resister ladder has a R/2 to ground at the end of the resistor ladder. This 2/R resistor divides the result of the resistor ladder by a half. But if the ESC32 is using 3.3 logic, the maximum voltage of the resistor ladder will be 1.65, not 0.7V?
You tried anyway. But when i connect the R G B wires from the VGA to the resistor ladders, the maximum voltage drops from 1.65V to around 0.25V which causes the screen to be very dimly lit as the voltage never reaches 0.7V.
Can anyone point me in the right direction?
any help is appreciated.
Best regrads Max Bursell