Have you ever thought of this ?
That you can generate any kind of signals using your little Microcontroller PIC16F84A . And one of these signals is the VGA signal that appears on your PC monitor . I thought of this idea but I couldn't implement it. But I found it at this website. So I wanted to try if it is working and share it with you.
I found an old web page containing this project http://tinyvga.com/pic-vga . I just made some minor modification on that project and put it into a real circuit. I found that the there is a small timing issue in this software that makes the monitor flicker repeatedly.
This is the schematic diagram of the circuit
This is the pinout of the VGA connector
There is a simple hint for your when downloading the software on the Microcontroller . Make sure that the configuration is :
I took this pictures for the monitor after running the program.
This picture shows the circuit.
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You can read this post on my blog in English
Here is the link for the Proteus 7 Model , source code and Hex file :
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