QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Been messing around with the HD-VC9900 boards, similar to the GBS-8220 but outputs to HDMI instead of VGA. I use the gbs-control custom firmware (https://github.com/ramapcsx2/gbs-control) and a Wemos D1 Mini Wifi board. Results are excellent with the custom firmware handling both the TV & Monitor mode really well.
The custom firmware didn't require any alteration to the sync signal or the RGB so a straight through 8pin to 6pin DIN connector to plug it all in. A similar DIN to VGA cable will also work I just set mine up with a 6pin DIN so I can use it with my Amstrad CPC6128 and BBC Micro as well.
I've also created a 3D printed case for the board https://www.thingiverse.com/thing:5335139
Anyway some photos:
The custom firmware didn't require any alteration to the sync signal or the RGB so a straight through 8pin to 6pin DIN connector to plug it all in. A similar DIN to VGA cable will also work I just set mine up with a 6pin DIN so I can use it with my Amstrad CPC6128 and BBC Micro as well.
I've also created a 3D printed case for the board https://www.thingiverse.com/thing:5335139
Anyway some photos:
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Nice job TomDD. Only one comment: the case should be totally black 
I've been using the GBS board for many years, and I knew abot the custom firmware, but the upgrading process was quite complex for my limited capabilities. Could you tell me if there is a simple way to flash the firmware today?

I've been using the GBS board for many years, and I knew abot the custom firmware, but the upgrading process was quite complex for my limited capabilities. Could you tell me if there is a simple way to flash the firmware today?
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Coincidentally, I just ordered one of these in the US last week. Only $34. I am thinking of making a universal input panel for it as part of my rack system, so it can auto switch between multiple sources.
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Clever ideaDave wrote:I am thinking of making a universal input panel for it as part of my rack system, so it can auto switch between multiple sources.
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Not had any issues with the latest firmware just using the Arudino IDE on my PC via USB. I prefer the D1 Mini boards over the others so would recommend that. Also the author of the gbs-control has created a nice guide to flashing https://github.com/ramapcsx2/gbs-contro ... ware-SetupCristian wrote:Nice job TomDD. Only one comment: the case should be totally black
I've been using the GBS board for many years, and I knew abot the custom firmware, but the upgrading process was quite complex for my limited capabilities. Could you tell me if there is a simple way to flash the firmware today?
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Just set-up a new D1 Mini and followed the instructions and it flashed first time no problems.TomDD wrote:Not had any issues with the latest firmware just using the Arudino IDE on my PC via USB. I prefer the D1 Mini boards over the others so would recommend that. Also the author of the gbs-control has created a nice guide to flashing https://github.com/ramapcsx2/gbs-contro ... ware-SetupCristian wrote:Nice job TomDD. Only one comment: the case should be totally black
I've been using the GBS board for many years, and I knew abot the custom firmware, but the upgrading process was quite complex for my limited capabilities. Could you tell me if there is a simple way to flash the firmware today?
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Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Just ordered one, £32.74 (incl VAT & postage with current discount: https://www.ebay.co.uk/itm/353822802777), not quite as good as $34 thoughDave wrote:Coincidentally, I just ordered one of these in the US last week. Only $34. I am thinking of making a universal input panel for it as part of my rack system, so it can auto switch between multiple sources.

Be interested to see input panel, something that sounds useful

TomDD neat case!

Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Have also updated my GBS-8200 case for those interested, same design as the HDMI version https://www.thingiverse.com/thing:5340983
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Thak you TomTomDD wrote:
Not had any issues with the latest firmware just using the Arudino IDE on my PC via USB. I prefer the D1 Mini boards over the others so would recommend that. Also the author of the gbs-control has created a nice guide to flashing https://github.com/ramapcsx2/gbs-contro ... ware-Setup
Re: QL to VGA / RGB to HDMI HD-VC9900 Video Converter Board
Tke next big update will be the black colorTomDD wrote:Have also updated my GBS-8200 case for those interested, same design as the HDMI version https://www.thingiverse.com/thing:5340983
