For sale: RGBtoHDMI boards

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IanB
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For sale: RGBtoHDMI boards

Post by IanB » Thu Sep 03, 2020 5:12 pm

I have a number of 8 bit RGB to HDMI 'hats' and add-on analog boards for sale both as partially built kits and fully assembled:

RGBtoHDMI
Kit: Sold out (All surface mount components are already fitted, only through hole parts have to be soldered)
Built: Sold out (Including cable)

Add-on Analog board:
Kit: £22 (All surface mount components are already fitted, only through hole parts have to be soldered)
Built: £25

Here is a photo of the kit and a built up board:
kit.jpg
Here's a photo of the analog board:
analogboard.jpg
Computers supported by the main TTL board:
BBC Micro / Master 128 / Electron
Oric / Atmos
IBM PC MDA / CGA / EGA
Spectrum 128 / +2
Sinclair QL
Camputers Lynx

Computers supported by the analog board:
Amstrad CPC
48K Spectrum (no bright colours)
Spectrum +2A
Spectrum +3
ZX80/81 (requires composite mod)
Dragon (requires signals picked up internally)
Tandy Color computer (requires signals picked up internally)
Tandy TRS80
Apple II or IIc or IIe
Atom
UK101
Ohio Superboard
Nascom II

The analog board also works with Commodore 64 and Atari 800XL but both of those machines require c0pperdragon's YUV interface fitted internally.

Finally it will work with the TI99/4a and other computers that use the same video chip but that requires an extra chip fitted on the analog board which is not included as standard.

Most of the TTL computers like the beeb will still work via the analog board.

In addition you will need a Raspberry Pi zero with 40 way header and a micro SD card (any size so get the cheapest but probably not >32GB)
You will also optionally need a case and the recommended model is linked in the wiki
https://github.com/hoglet67/RGBtoHDMI/w ... t-Board%29

I will include the two spacers required for the above case with each board.


Confirmed kits:
1024MAK 3x RGB + 1x Analog
markdryan 2x RGB
KenLowe 2x RGB + 1x Analog
Boydie 1x RGB + 1x Analog
sfalvey 1x RGB + 1x Analog
mark71 2x RGB + 1x Analog
nickm 1x RGB
markrwj 2x RGB + 1x Analog
PhilYoung 1x RGB + 1x Analog
walkerworks 1xRGB

First batch all sold

Note there may not be a full kit option on the next batch of main boards as I'm investigating the cost of having all the through hole parts fitted as well although there will still be a reduced price if you want to make up your own cable.

Confirmed built:
JohnJones 1x RGB + 1x Analog
Arcadian 2x RGB + 1x Analog
patb1au 1x RGB + 1x Analog
Mince 1x RGB + 1x Analog
VectorEyes 1x RGB + 1x Analog
trixster 1x RGB + 1x Analog
lcww1 1x RGB + 1x Analog
grannyg 1xRGB + 1xAnalog

First batch all sold

This initial batch will be UK only shipping
Anyone non-UK please PM me first.
Last edited by IanB on Thu Sep 10, 2020 5:32 pm, edited 11 times in total.

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1024MAK
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Re: For sale: RGBtoHDMI boards

Post by 1024MAK » Thu Sep 03, 2020 5:36 pm

IanB wrote:
Thu Sep 03, 2020 5:12 pm
I have a number of 8 bit RGB to HDMI 'hats' and add-on analog boards for sale both as partially built kits and fully assembled:

RGBtoHDMI
Kit: £20 (All surface mount components are already fitted, only through hole parts have to be soldered)
Built: £30 (Including cable)

Add-on Analog board:
Built: £25
Hello Ian

Can you please put me down for:
2 x RGBtoHDMI kits
1 x Add-on Analog board (are these available as kits as well with just the SMD parts already fitted?)

Thanks

Mark

markdryan
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Re: For sale: RGBtoHDMI boards

Post by markdryan » Thu Sep 03, 2020 6:43 pm

Hi Ian,

Could you put me down for 2xRGBtoHDMI kits please?

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IanB
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Re: For sale: RGBtoHDMI boards

Post by IanB » Thu Sep 03, 2020 6:49 pm

1024MAK wrote:
Thu Sep 03, 2020 5:36 pm
1 x Add-on Analog board (are these available as kits as well with just the SMD parts already fitted?)
I wasn't going to bother with a kit for that as there isn't much soldering to do but as you've asked I've added a kit price as well.

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KenLowe
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Re: For sale: RGBtoHDMI boards

Post by KenLowe » Thu Sep 03, 2020 7:04 pm

Hi Ian

Can you please also put me down for

2 x RGBtoHDMI kits
1 x Add-on Analog board kit

Thanks

patb1au
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Re: For sale: RGBtoHDMI boards

Post by patb1au » Thu Sep 03, 2020 8:41 pm

Hi Ian -

Please put me down for:

1 x RGBtoHDMI built
1 x Analog board built

Thanks

Pat

Boydie
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Re: For sale: RGBtoHDMI boards

Post by Boydie » Thu Sep 03, 2020 9:48 pm

Please could you put me down for:

1 x RGBtoHDMI kit
1 x Analog board kit

sfalvey
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Re: For sale: RGBtoHDMI boards

Post by sfalvey » Thu Sep 03, 2020 10:22 pm

Please can you put me down for one rgbtohdmi kit and one analogue kit?

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Mince
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Re: For sale: RGBtoHDMI boards

Post by Mince » Thu Sep 03, 2020 10:28 pm

Great news! Please could you put me down for:

1x RGBtoHDMI built
1x Add-on Analog board built

... thanks!

VectorEyes
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Re: For sale: RGBtoHDMI boards

Post by VectorEyes » Fri Sep 04, 2020 4:50 am

Could you put me down for one RGBtoHDMI built and one analogue board built please?

Thanks!

mark71
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Re: For sale: RGBtoHDMI boards

Post by mark71 » Fri Sep 04, 2020 6:41 am

Hi Ian

Can you put me down for:-

2 x RGBtoHDMI kit
1 x Analog board kit

Thanks

Mark

JohnJones
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Re: For sale: RGBtoHDMI boards

Post by JohnJones » Fri Sep 04, 2020 7:13 am

Hello Ian

I'd like to confirm my previously expressed interest in the following:

1 x RGBtoHDMI: Built £30
1 x Analogue board: Built £25

Many thanks.

John

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trixster
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Re: For sale: RGBtoHDMI boards

Post by trixster » Fri Sep 04, 2020 8:55 am

Hi Ian,

Could I buy the following, if possible?

1 x RGBtoHDMI: Built £30
1 x Analogue board: Built £25

Thanks!
Andy

nickm
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Re: For sale: RGBtoHDMI boards

Post by nickm » Fri Sep 04, 2020 10:18 am

Hi Ian

Could I buy 1 x RGBtoHDMI kit if possible please?

Thanks

Nick

markrwj
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Re: For sale: RGBtoHDMI boards

Post by markrwj » Fri Sep 04, 2020 10:27 pm

Could I have 2 x RGBtoHDMI kits and one analog board.

Thanks

Mark

PhilYoung
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Re: For sale: RGBtoHDMI boards

Post by PhilYoung » Sat Sep 05, 2020 12:25 pm

Hi,

Could I have one of each kit please ?

Cheers,

Phil Young

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lcww1
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Re: For sale: RGBtoHDMI boards

Post by lcww1 » Sat Sep 05, 2020 12:29 pm

Hello,
Thanks for making these available.
Could I have 1 built RGBtoHDMI board, and 1 built analog board, please?
Thanks,
lcww1

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walkerworks
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Re: For sale: RGBtoHDMI boards

Post by walkerworks » Sun Sep 06, 2020 12:55 pm

Hi,

Could I buy 1 x RGBtoHDMI kit please.

Derek
bygonebytes.co.uk

sfalvey
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Re: For sale: RGBtoHDMI boards

Post by sfalvey » Mon Sep 07, 2020 7:48 am

Hi Ianb,

Can you pm me your email address pls? I dont have PM privileges yet.

thx

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1024MAK
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Re: For sale: RGBtoHDMI boards

Post by 1024MAK » Mon Sep 07, 2020 9:07 pm

Hi Ian

In the other thread (link) you show that you have now managed to get a version working with an Atari ST.

Are the boards you are selling in this topic suitable? If yes, I’ll have another. Heck, these are darned useful anyway, so please add another GRBtoHDMI kit to my order anyway. And if different boards are needed, please put me down for at least two of the new ones.

Also which of the Atari ST range will it work with, I have the following:
  • Atari ST (original range with external PSU and no internal disk drive),
  • Atari STFM - built in PSU and built in disk drive, the U.K. models have a built in RF modulator,
  • Atari STe (as the STFM, but has different video circuitry)
  • Atari Mega (two box professional computer based on the STFM)
  • Atari TT (two box professional computer, faster more capable version over all the above)
Cheers :D

Mark

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IanB
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Re: For sale: RGBtoHDMI boards

Post by IanB » Tue Sep 08, 2020 1:50 pm

1024MAK wrote:
Mon Sep 07, 2020 9:07 pm
Are the boards you are selling in this topic suitable?
Not really, you can make it work with track cuts and links but there will have to be a new 12 bit board to do it properly.
1024MAK wrote:
Mon Sep 07, 2020 9:07 pm
Heck, these are darned useful anyway, so please add another GRBtoHDMI kit to my order anyway. And if different boards are needed, please put me down for at least two of the new ones.
OK
1024MAK wrote:
Mon Sep 07, 2020 9:07 pm
Also which of the Atari ST range will it work with, I have the following:
I only have a 520STFM and I'm not familiar with the other models. It picks up the RGB signals internally from the shifter chip (R1,R2,R0,G2,G1,G0,B2,B1,B0) plus the mono signal and H & V sync so if those signals are available on other variants it should work for at least the same resolutions as the 520STFM at any bit depth up to 9bits per pixel. What other resolutions (if any) do the later ST versions output?

Mono only 640x400 should work as an external solution because the mono output and sync signals are already available on the ST's video connector at TTL levels but I haven't tried that. It might also be possible to make a fully external solution for both Atari and Amiga with a different analog board design but I haven't looked at that yet.

grannyg
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Re: For sale: RGBtoHDMI boards

Post by grannyg » Tue Sep 08, 2020 3:02 pm

I'd like 1x RGB + 1x Analog. Both built if there are any still available. Thanks.

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1024MAK
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Re: For sale: RGBtoHDMI boards

Post by 1024MAK » Tue Sep 08, 2020 3:37 pm

Hi Ian

On that basis, it should work with the following models, as they all have the same shifter chip:
  • Atari ST (original range with external PSU and no internal disk drive),
  • Atari STF - built in PSU and built in disk drive,
  • Atari STFM - built in PSU and built in disk drive, the U.K. models have a built in RF modulator,
  • Atari Mega (two box professional computer based on the STFM)
I’ll have to check on the STe, as it has different video circuitry (more colours, a palette of 4096) and I forget what signals are available. It’s been a while since I poked around the video circuitry of these. See here for more details.
The same will apply to the Mega STe models.

The TT (more info) is much less common and I’ve never poked around inside mine. So I’ll have to check.

Due to the 4096 colour palette and the different video circuitry for the STe, Mega STe and TT, I suspect that RGBtoHDMI may not be suitable for use with these.

Mark

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1024MAK
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Re: For sale: RGBtoHDMI boards

Post by 1024MAK » Tue Sep 08, 2020 4:04 pm

So the shifter in the STe and Mega STe has four output lines/bits per RGB colour (12 bits total) and therefore if RGBtoHDMI can cope with 12 bits of data it should be possible. Although it looks like picking up the internal signals will be easier on the resistors used as a DAC ladder rather than in the IC pins.

Mark

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IanB
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Re: For sale: RGBtoHDMI boards

Post by IanB » Tue Sep 08, 2020 7:27 pm

1024MAK wrote:
Tue Sep 08, 2020 4:04 pm
So the shifter in the STe and Mega STe has four output lines/bits per RGB colour (12 bits total) and therefore if RGBtoHDMI can cope with 12 bits of data it should be possible.
I've continued this technical discussion in the main thread viewtopic.php?f=3&t=14430&p=287417#p287417

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IanB
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Re: For sale: RGBtoHDMI boards

Post by IanB » Tue Sep 08, 2020 7:30 pm

All boards are sold out now but please post if you want to reserve boards from the next batch

sdhip
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Re: For sale: RGBtoHDMI boards

Post by sdhip » Wed Sep 09, 2020 4:40 pm

Second batch. Yes please -- just one RGBtoHDMI board please.

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SpaceFlightOrange
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Re: For sale: RGBtoHDMI boards

Post by SpaceFlightOrange » Wed Sep 09, 2020 6:01 pm

Hi Ian,

Could I reserve one RGB-HDMI and one analogue board please? Kits please, or built if that's what you go with.

Thanks
James

BBC Model A Issue 3 (Upgraded to Model B, had it since I was a kid), Opus Dual 40/80 FDD, Watford Mouse, Voltmace delta 14/B, Gotek, IFEL ROMRAM-B4, Pi-Zero CoPro

Master 128, VideoNuLA, Gotek

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mlouka
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Re: For sale: RGBtoHDMI boards

Post by mlouka » Thu Sep 10, 2020 10:44 am

I would like to reserve a built RGBtoHDMI from the second batch, please.
I can provide my parents' UK address for delivery (I live in Norway).
Thanks!
Last edited by mlouka on Sat Sep 12, 2020 12:10 pm, edited 1 time in total.
BBC Master 128, BBC Model B i7, PMS B2P-6502 2nd proc., PiTubeDirect (both internal and external), RetroClinic Multi-OS Selector, Sundby 256k RAM/ROM card, MMFS, Gotek, Music 500, ...

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1987akaTheMoneyPit
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Re: For sale: RGBtoHDMI boards

Post by 1987akaTheMoneyPit » Sat Sep 12, 2020 6:08 am

Hello Ian,
Can you put me down for:-

2 x RGBtoHDMI kit,
1 x Analog board kit.

Many thanks and regards
David
[-X if it ain't broke don't fix it :idea:

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