Help to make 13 pin din to VGA

[fragedthewife]

Okay so I'm using a very old CRT display as a monitor simply using the RF output. Not only is this taking up much room but
I already have a VGA monitor sitting next to it which I might as well try and use.

I have a VGA TO VGA cable which I will happily cut one end off and solder up a 13 pin din plug to work with the ST/STE

Can some one help me with the pin outs please



I think that's the correct pin numbers per plug are there any resistors involved.

Thank you.

Chris.

[dhedberg]

You'll find everything you need to know in the thread below:
http://atariage.com/forums/topic/170385 ... y-adapter/

I assume you realize that the VGA monitor will not be able to display anything but ST-High when connected to the STE, i.e., it will act like a mono monitor.

[fragedthewife]

Oh I didn't realise that might not work out so great
Would it be better to go Scart or Phono ?

I see the mono hi res is as follows.

[Greenious]

Also look at http://info-coach.fr/atari/hardware/int ... deo_cables

[fragedthewife]

Excellent that's a great bit of information right there. I will come up with something.

Thank you.

[dhedberg]

Oh I didn't realise that might not work out so great
Would it be better to go Scart or Phono ?

It depends on what monitors and TVs you plan/want to connect your Atari to. If your VGA monitor is a multi-sync monitor that can handle the lower horizontal sync frequency (15.75 kHz) you can create a VGA cable for the Atari ST(E) also for ST Low and ST Medium resolutions. If your TV has a SCART connector with support for RGB, you can create or buy an RGB SCART cable. Greenious provided a link to a page with some great information if you want to build one yourself.

I think you may be interested in this adapter:
http://atari-forum.com/viewtopic.php?f=15&t=30521

If you have a multi-sync monitor it will make it possible to display all 3 ST resolutions (Low/Med/Hi) without changing cables or monitors.

[fragedthewife]

That's a very nice idea, I don't see any options to buy?
Is it build your own from the schematics ?

[spiny]

That's a very nice idea, I don't see any options to buy?
Is it build your own from the schematics ?

you NEED to check if your monitor can display ST LOW before you buy/make any cables. it's very rare that a recent monitor show the low values that an Atari sends out.

What VGA monitor do you have?

[Miguel]

FYI with the exception of the ground pin the spacing of the other pins of that 13 pin din is the same as perforated experimenters board while the rest is the same as a MIDI plug, so if you have the necessary skill and components at hand you can knock one together yourself....otherwise I would recommend just ordering what you need.

[fragedthewife]

I have a few VGA monitors I could use, some modern and a few older type 10 years or more.

[francois]

I built myself a cable and also made a step by step guide if it can help someone to build their own.

First step:

1 cut VGA cable and identify wires 01.47.50.png

Last step:

Best adjustment on SONY monitor.jpeg

I have a followup question though: Can anyone recommend a converter for the next step to go from VGA to HDMI?

Because, with what I had available I got nothing but this:

Failed test on HDMI monitor through adapters.jpeg

^or could that be because I didn't use resistors in my cable?

[SyntaxError]

for what its worth :

https://centuriontech.eu/product/st2vga-r4/ seems to be built from schematics that must be "floating around somewhere" sadly i couldnt find them

i use this :

https://www.benl.ebay.be/itm/355970029601

which at time of buying was around 30-50% less and to a rank amateur noob lamer a bit cheaper than buying a soldering station and digging up schematics (i can understand if you're a bit more tek-advanced you want to diy ofcourse - just my 2 cents)

i have a ink that looks like the one in the last picture there which used with s-vid yellow input to hdmi on a medion 1080p screen gives somewhat wave dubitable quality and the monitor cant reach the 15 it needs to do it directly

i have another monitor for the VGA adapter :

Dell SE2722H - Full HD VA Monitor - AMD FreeSync - Antiglans - 27 inch
https://tweakers.net/pricewatch/1713976 ... zwart.html

which was around €99 and so far seems to run about everything on a mister fpga xept the Alice MC-10 (the ones i tried) when connected to the direct vga output

the one thing i seem to have is that on the mister i get crisp-deepspace black but on the ST (Atari STE 1040 /4MB tos 2.06 - sidecartridge , psu should be recapped) i get some kind of ghosting the darker the screen gets, on the white screen on boot its not visible, on the green desktop not as well but when i load up civilization from floppies i get some kind of stripes (not actually enough to get in the way) and the floppy drive seems to give interference sometimes as i can "see it loading" ... i dug up some and found it might or not be the capacitors, or the screen drawing too much power compared to what the thing is built for.
( https://www.atari-forum.com/viewtopic.php?t=34091 )

its a good opportunity to get into electronics something i wanted since the kid (to build my own spaceship and get away from here) but i still seem to be stuck here but im actually pretty much a total lvl 1 noob on the matter tho i get concepts like volts and amps and current, resistance and capacitors and what not i did some online courses from a washington professor to get the basic words but thats about it

so the monitor certainly works and at that price for my budget i cant beat it with 300-400 for an original/refurbished 14inch color only screen, it also works in mono but when set on the mister fpga mono 60hz gives stripes too

for what its worth (i guess you could always get one and use and/or dismantle it until you get your own depending on your finances : ) )

[simonsunnyboy]

I have a followup question though: Can anyone recommend a converter for the next step to go from VGA to HDMI?

The Medusa by Lotharek should be able to do this. It has DVI but it works with DVI to HDMI adapter with my TV too.
https://lotharek.pl/productdetail.php?id=135

It is pricy but worth the investment.

It also has a VGA input already and it should do both mono and color modes.

[francois]

At that price I'm going to wait for someone to confirm beyond "should work"

I already tried 2 cheaper solution that both failed. I believe the critical issue resides in the fact that the Atari "VGA" signal is only 400 lines, instead of the "standardized" 480 lines. I suspect some chips/algos don't begin to try to make HDMI frames until they have received all the lines they need for 1 frame.