Has anyone played with this?
I'd like to experiment generating colour bars with the arduino.
B&W has allready been done, and colour on some other chips.
Timer 2 could be used to generate a digital output for the colour burst and chrominance / saturation signal, that is if a tv would accept squarewave chrominance, and if pulse width would work for the saturation signal.
And to generate luminance say of 4 levels 2 other pins could be used with a simple r-2r ladder, this and the chrominance part can be mixed and buffered with a tranny, ok mixing levels would need to be carefully arranged.
Ok the chip might not be able to do a lot else, but this is an interesting idea to play with for some.
Things would get a little more complex for pal, but ntsc shouldnt be so hard.
I'd like to experiment generating colour bars with the arduino.
B&W has allready been done, and colour on some other chips.
Timer 2 could be used to generate a digital output for the colour burst and chrominance / saturation signal, that is if a tv would accept squarewave chrominance, and if pulse width would work for the saturation signal.
And to generate luminance say of 4 levels 2 other pins could be used with a simple r-2r ladder, this and the chrominance part can be mixed and buffered with a tranny, ok mixing levels would need to be carefully arranged.
Ok the chip might not be able to do a lot else, but this is an interesting idea to play with for some.
Things would get a little more complex for pal, but ntsc shouldnt be so hard.