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> Presumably, though, you'd be better off with a beefier FPGA for which HDMI isn't such a stretch. Another option is an external HDMI serializer. You send it a
by duskwuff 4y ago
> Presumably, though, you'd be better off with a beefier FPGA for which HDMI isn't such a stretch.
Another option is an external HDMI serializer. You send it a parallel video signal, similar to what you'd send to a VGA DAC, and it handles all the details of turning that into HDMI.
Here's one on a breakout board: https://1bitsquared.com/products/pmod-digital-video-interface https://1bitsquared.com/products/pmod-digital-video-interfac...
- kragen 4y agoYeah, I was wondering if an external SERDES and some level shifters would be enough. Also though you could literally generate a VGA signal with an R-2R DAC and feed it to a VGA-to-HDMI adaptor. These apparently cost US$10 and are available in the kind of stores that sell USB hubs and fake SD cards: https://articulo.mercadolibre.com.ar/MLA-897320291-cable-adaptador-conversor-vga-a-hdmi-full-hd-audio-usb-_JM https://articulo.mercadolibre.com.ar/MLA-897320291-cable-ada...
- duskwuff 4y ago> Also though you could literally generate a VGA signal with an R-2R DAC and feed it to a VGA-to-HDMI adaptor. The breakout I linked is only $20, and uses virtually the same electrical interface as a VGA DAC. (The only difference is that it also takes a clock signal.) You'd hardly be saving any money with the janky VGA-to-HDMI setup, and the image quality would be worse.
- kragen 4y agoAgreed, but the shitty electronics store around the corner from me doesn't have the breakout you linked in stock, and if I try to get it shipped from overseas they'll ask me to pay with a credit card I don't have, and then it will get held up in customs and probably returned to the sender. Third world problems, I know, but they're still real problems.