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pixel wall build out of multiple monitors without a computer Answered

i am working on a projekt to make a pixel monitor wall without a computer.
i hoped that i can just give a small signal to each of the RGB oprts of the VGA-plug from the monitor to control a solid color on a monitor.
i am getting crazy by "circuitbend" each of the pins on the vga plug.

can anybody help me what would be the key-move to get a first result in bringing up the monitor jsut show a red(or green or blue) display?

i would be so thankful if anybody had tips on building that.
i wanted to use multiple monitors (up to 4 x 4 = 16) to make such a pixel wall and just wanted to connectit to small microcontroller.

please help me



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9 years ago

Interesting concept. Since most analog monitors need "sync" signals just to turn on, you need a microcontroller to generate the sync signal.
I think about 16 kHz for horizontal, and 60 Hz for vertical should do. Just a pulse in those frequencies. Apply the sync signals to appropriate pins of VGA connector. Then for the color, R/G/B pins should take DC voltage between 0 to 5 V. Adjust the voltages to create solid colors.


9 years ago

Might this help?