I have been looking into variations on TVout for the ATMega and found lots of interesting stuff...
One of the most impressive was UZEBOX http://belogic.com/uzebox/index.asp - I am amazed at what can be done with a 644 and a AD725 RGB/PAL convertor chip... if you havent seen this go and have a look at the site !!!
This got me thinking, if that can be done for the ATMega644, surely a simpler version could be created for the 328 as an extension to the TVout library (or perhaps a new library), I was thinking limited text/graphics in a similar way to the current TVout but with the addition of 3:3:2 RGB for the nominated colour...
I have looked at the schematics on the uzebox site and they seem to use R2R ladders running from PWMs to created the separate components of R/G/B then this is stuffed into the AD725 chip (along with some sync stuff) to create a composite output
VERY EXCITING STUFF.... if only we had one for the 328 that we could manipulate ourselves...
I just got started with TVout-solution and everything works like a charm.
Maybe it's OT, but what are possibilities to multiply PAL-output?
I need to send the very same output signal into 12 sources. Amplifying does not seem to be the right thing... Is using HEX-buffers for Arduino outputs 7 and 9 right thing? First I parallel HEX-buffer's inputs, and then I get a new bunch of outputs. For each of these I use resistors as they were used for direct outputs from Arduino.
It should let Arduino to live and give me multiplied outputs as well... Or is there any other possibility?
PS! Industrial and buy-from-there solutions are not the ones I am looking for
