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Author Topic: My A500 "project" pics, details, build log?  (Read 56159 times)

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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #224 from previous page: June 23, 2013, 12:28:23 AM »
Multiple cuts 90% of the way through the mdf, then bend it ;)



 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #225 on: June 27, 2013, 08:47:50 AM »
:(
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #226 on: June 27, 2013, 09:33:57 AM »
The RGB scart to YUV adapter arrived.... then I couldn't find the scart cable :(

Anyhoo! pics should follow soon.... this tv has some interesting results, but once again, I need it to compare scart to yuv, and svideo ;)
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #227 on: June 27, 2013, 10:31:13 AM »
The conversion from RGB scart to yuv/ypbpr is a fairly simple addition/subtraction, and not much more.

I dont think it does anything with the sync signal, as the ypbpr will accept the 15Khz, but it may modify it slightly, to make it more compatible with more TVs ;)

It doesn't stretch the image, the tv does, same as if you were to connect scart, or the GBS, directly to the TV.

I'll have more of a fiddle with it over the weekend.
 

Offline AmmoJammoTopic starter

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Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #229 on: June 29, 2013, 08:19:40 AM »
options are actually YUV, Scart RGB, Svideo ;)

Should have plugged the GBS in, but this wasn't my proper testing just yet anyway...
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #230 on: June 29, 2013, 09:04:26 AM »
If you guess right, I'll tell you its right :D

Maybe I should plug the GBS in and find some new camera batteries...
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #231 on: June 29, 2013, 10:54:13 AM »
Bit of YUV, GBS, svideo ;)

not resized this time.... but, I dont think it looks any better...

The GBS actually seems to look somewhat better on this TV ;)

All my cables are very low quality though.

1. http://imageshack.us/a/img5/1278/6rcj.jpg
2. http://imageshack.us/a/img42/1039/fkzv.jpg
3. http://imageshack.us/a/img27/6322/y7hp.jpg
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #232 on: July 01, 2013, 07:54:42 AM »
1. Svideo
2. YUV
3. GBS

However, as I said, this tv doesn't photograph well.

YUV is slightly better than the svideo.... but using scart rgb directly connected to the tv actually gave the worst picture... (not including the gbs) :p

the scart to yuv adapter also has the ability to adjust all the colours, and contrast, I spent about 10 seconds fiddling, so I'm sure you could get it better ;)
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #233 on: July 01, 2013, 10:29:04 PM »
The tv scales it.
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #234 on: July 01, 2013, 10:42:56 PM »
The tv stretches it.
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #235 on: July 01, 2013, 10:54:35 PM »
The device outputs what is being input. It doesn't change the resolution or the aspect ratio. It Dmdpmt stretch or scale the image, the tv does!
 

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Re: My A500 "project" pics, details, build log?
« Reply #236 on: July 01, 2013, 11:35:11 PM »
The yuv input will always be stretched to full screen. You can plug a composite signal into the green connector and the tv will still scale it to full screen.
 

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Re: My A500 "project" pics, details, build log?
« Reply #237 on: July 02, 2013, 06:21:03 AM »
Inside ;)
 

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Re: My A500 "project" pics, details, build log?
« Reply #238 on: July 02, 2013, 08:12:06 AM »


If you have multiple Amigas, Sega Mega Drives, Master Systems, or Super Nintendo consoles, (or others I'm sure) that have what is basically a scart rgb output, it makes sense to get one of these so you can get the best possible picture on a modern tv ;)
 

Offline AmmoJammoTopic starter

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Re: My A500 "project" pics, details, build log?
« Reply #239 on: July 02, 2013, 08:16:40 AM »
As you are probably aware of, I made up a circuit that was basically the same as this device, and it worked on two other tvs that didn't accept 15Khz.

In fact, this TV with the scart input won't accept the Amiga input on the vga connector either...