RGB2HDMI for ST

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Re: RGB2HDMI for ST

Post by pixelk »

I still have 2 naked 12 bit extender and 3 ST buffered board available that I can toss in an envelope if anybody is interested.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by pixelk »

I just uploader an alternative 3D printed box on Thingiverse for the RGB2HDMI + 12bit extender :
https://www.thingiverse.com/thing:4921088

Image

Image

I upgraded My second board with the Beta36 from IanSB which supports monochrome and low/mid res at the same time. I will wire my second STe with it shortly (the pickup point for Composite Sync is different than the one for the 20210529 release I used so far).
Hopefully, I'll document that as well.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by DarkLord »

So this one is an external version?

Is that right?

Thanks.
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Re: RGB2HDMI for ST

Post by pixelk »

DarkLord wrote: Sat Jul 31, 2021 5:33 pm So this one is an external version?
Nope. the hardware is still the same. The ST* simply doesn't output the digital signal on the standard output (only analog). I you want the fully digital signal that the RGB2HDMI provides you will always need to tap into the circuitry on the motherboard.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by pixelk »

So about the Beta36 support for Mono + Color modes :
IanSB
Connect composite sync to the HSYNC input of RGBtoHDMI (Wire 12)
Composite sync should be available on U211C pin 6 (74LS04) also on U403 (MC1377) Pin 2 (See STE Schematic)
Connect MONO to the VSYNC input of RGBtoHDMI (Wire 14)

After these changes, the mono video will automatically be selected when the mono sense input is grounded on the STE video connector just like the ST. You can test this by inserting a low value resistor or wire link between pins 4 and 13 of the video socket.

I have also updated the cables page with the new ST and STE connections:
https://github.com/hoglet67/RGBtoHDMI/wiki/Cables
Which translates into (hopefully I didn't make any mistakes this time...)

Image

Image

Image

Image

I'll start my soldering and will post progress pictures.
Last edited by pixelk on Sun Aug 01, 2021 5:21 pm, edited 1 time in total.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by DarkLord »

Oh, my bad - the printed case made me think that. :)
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Re: RGB2HDMI for ST

Post by pixelk »

STe Motherboard soldering

Solder removed from pin 2 of U403 with some solder wick
Image

The ribbon fully soldered
Image

Zoom on Power and color bits
Image

So my ribbon pinout is (starting from the red stripped wire)
  1. Composite Sync
  2. +5V
  3. GND
  4. blu3
  5. blu2
  6. blu1
  7. Mono
  8. blu0
  9. grn1
  10. grn2
  11. grn3
  12. grn0
  13. red1
  14. red2
  15. red3
  16. red0
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by DarkLord »

Well, will just repeat again, if anyone is going to do a run of these,
fully assembled, I'm all in.

Thanks.
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Re: RGB2HDMI for ST

Post by pixelk »

For the first time Ever, My STe in High Res over HDMI :D

Image
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by bjkock »

I was one of the lucky few how got the chance to get a hold of one of pixelk´s spare RGB2HDMI boards and can confirm that it works perfect with the Beta36 firmware that supports both color and Mono modes.

I built a small color/mono switch that plugs in to the monitor port on the STE and makes it very easy to switch between color and mono mode.

I have tried some demos (inc. Closure) and some games (inc. Obsession) and all seems to work great and look as they are supposed to.

Thanks to Pixelk for letting me buy this board, the picture from my STE have never looked better 😊

Color mode:
1.jpg

Mono mode:
2.jpg

Color/Mono Switch:
3.jpg

Obsession:
4.jpg

Closure:
5.jpg
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Re: RGB2HDMI for ST

Post by pixelk »

I'm so happy that others can experience this :D You're welcome !
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by PeterS »

I don't use my ST but this is brilliant work.

If there was a built or semi-built version I would get one just to see what the ST output should really look like.
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Re: RGB2HDMI for ST

Post by Bikerbob »

I am also in for one if it get produced.

James
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Re: RGB2HDMI for ST

Post by PeterS »

Is the ST audio also sent over hdmi ?
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Re: RGB2HDMI for ST

Post by DoG »

PeterS wrote: Sat Aug 07, 2021 9:13 pm Is the ST audio also sent over hdmi ?
No. And it will probably never happened.
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Re: RGB2HDMI for ST

Post by pixelk »

PeterS wrote: Sat Aug 07, 2021 9:13 pm Is the ST audio also sent over hdmi ?
It's explored in this thread https://github.com/c0pperdragon/Amiga-D ... /issues/20, and as DoG said, not likely to happen.

I use an HDMI Audio Injector : Monoprice Blackbird 4K Series HDMI Audio Inserter on ebay (Model 13347), And you will have to change the output mode from DVI compatible to HDMI in RGB2HDMI's interface.

Image

It works fine with my HDMI capture card.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by pixelk »

I just converted my second STe to the Beta 37> Wiring (auto-switching to high-res with composite sync).

And just for giggles, here is the Atari Logo, With my old Scart2HDMI on the left, and the RGB2HDMI on the right :

Image

Those two pictures came from the same STe, on the same boot sequence, through the same HDMI capture card. So yes the original output still works, but there is a stark contract between SCART and RGB, to say the least.
Last edited by pixelk on Sun Aug 08, 2021 4:06 pm, edited 1 time in total.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by pixelk »

I'm considering making a second batch, but, be aware, the European Customs are now enforced for cheap parcels in my country, and it will cost more to import the component. I still plan to make no profit on the build, but it will cost more in the end.

Ill update this post with projected costs, to evaluate if it's even interesting.

*** EDIT ***
For a batch of 10 boards, as seen in this post
  • 10* Passives (2x20pin female header, resistors, capacitors, LEDs and buttons from RS component in the EU, for 5 boards : 59€
  • 10 CPLDs from eBay in China, with customs : 52 €
  • 10 PCBs from PCBWay in China, with customs : 42 €
So that's 153€ minimum

So my estimation is 16€ without shipping, per board (limited to 1 board by person).

For those asking, I did not pay customs on the CPLD's for the first batch, but had to pay customs for the PCB's after they were all shipped (thank you Fedex :x ). The CPLD's are now more expensive too.

*** EDIT 2 ***
The interest expressed in PMs seems to mandate a 10 piece batch, adjusting projection accordingly. Also adding the female 2x20 pin header, leds and buttons. The good news is that it's makes the per unit cost drop. I won't go over 10 pieces, as I do all soldering by hand, and it loses its charm quickly.
Also the CPLDs from China took one month to arrive last time, but they were all fine and genuine, so I'm sticking with the same vendor..

*** EDIT 3 ***
2021-08-09 - 10 CPLDs ordered from eBay
2021-08-09 - 10 PCBs ordered from PCBWay
2021-08-09 - 10 Passives combo ordered from RS Components
Last edited by pixelk on Mon Aug 09, 2021 3:27 pm, edited 3 times in total.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by DarkLord »

These are going to be "finished" products? I'm asking because I just don't
have the skill/ability to do SMD stuff at all.

If they are, count me in - big time! and many thanks. :)

PS Planning on using this with a STacy.
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Re: RGB2HDMI for ST

Post by pixelk »

DarkLord wrote: Sun Aug 08, 2021 7:24 pm These are going to be "finished" products? I'm asking because I just don't
have the skill/ability to do SMD stuff at all.
Everybody has another definition of "finished", I will offer the same product as seen in post 418937
With all SMD soldered and CPLD programmed with the latest beta from IanSB.
You will need a Pi 0 (wireless or not, I tested both) with male headers soldered, a µSD (1Go is fine) and a way to solder from the 12bit board to your ST's Shifter & Sync output on it's motherboard (I used old IDE hard drive ribbons). Don't forget that the PI HDMI output is a mini-HDMI, you'll need an adapter if you don't own one already.

By the way, I ordered Black PCBs this time (Fancy !)
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by DarkLord »

Thank you.

I actually think this is beyond my capabilities but I'm going to cross my fingers.

That github link/message thread makes my head hurt... :/
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Re: RGB2HDMI for ST

Post by pixelk »

I won't lie, it frightened me at first too, and before I completed this thread on atari-forum, you had to gather informations from a lot of different sources to even understand what is needed (that's why I mistakenly produced the extender and buffer PCBs that are of no use to me). But I'm glad I did the legwork, I now understand the underlying theory and I'm able to guide others through it. It's a shame the project Wiki isn't updated more often, but now I can live with it. The fact is the Atari ST community wasn't the first target of this project, just an happy accident on the road of the support of much more arcane machines. The Amiga got a better support too. In the end you have to follow at least 3 different github forks to get it all (1 2 3).
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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Re: RGB2HDMI for ST

Post by PeterS »

I am trying to work out the parts required but I don't know what some of them are.


* RGB2HDMI
* Raspberry pi zero https://www.raspberrypi.org/products/raspberry-pi-zero/
* 2x 20 male headers ?
* 1*2 male headers ?
* Micro SD Card
* 16 wires ribbon cable
* 1 off 12 bits extender boards ?
* 1 off ST Buffered boards ?
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Re: RGB2HDMI for ST

Post by Bikerbob »

SO I did not PM you, but do you have space for me on the list? I am in if so!

THanks

James
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Re: RGB2HDMI for ST

Post by pixelk »

PeterS wrote: Mon Aug 09, 2021 7:02 pm I am trying to work out the parts required but I don't know what some of them are.


* RGB2HDMI
* Raspberry pi zero https://www.raspberrypi.org/products/raspberry-pi-zero/
* 2x 20 male headers ?
* 1*2 male headers ?
* Micro SD Card
* 16 wires ribbon cable
* 1 off 12 bits extender boards ?
* 1 off ST Buffered boards ?
Everything is described in the BOM list in the projects wiki ( 12 bit board - Raspberry Pi ) which you should read before trying to open your ST :)

As I can't edit this post any more, I'll Add a list of people in line later this evening.
520 STe C398789-001 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + CosmoEx with Pi2 + RGB2HDMI IanSB Beta 37
520 STe C025913-038 DMA + 4Mo + TOS 1.62/2.06 switcher + Exxos PSU + MC68HC000 + 2.22K bus resistors + 1772 10K pullup + HxC USB floppy + RGB2HDMI IanSB Beta 39
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