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I am working on building this project for my Raspberry Pi well I need to extend the HDMI port of this monitor http://store.hp.com/us/en/pdp/hp-22er-215-inch-display

I need to place the display in an enclosure, so the horizontal HDMI connector with a regular cable would cause the case to be too deep. So I need to basically relocate the port onto a breadboard and then connect to my raspberry pi. Any ideas? I was considering desoldering it and attempting to get wires to lineup and connect to it. Or somehow extending the ribbon cable coming from the board to the monitor so that I could put it in a separate box or something.

Any suggestions on if it would be a better option to extend the HDMI port or somehow extend the display ribbon cable?

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    \$\begingroup\$ good luck with that. Display links have bit rates significantly above 1 Gb/s, ie. very high-frequency signals. You can't just "breadboard" those. \$\endgroup\$
    – Marcus Müller
    Jul 8, 2017 at 16:13
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    \$\begingroup\$ Why don't you want to use a regular cable? \$\endgroup\$
    – Passerby
    Jul 8, 2017 at 16:30
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    \$\begingroup\$ What @Passerby said. "I don't want to" is not an engineering reason, especially if "the thing I don't want to do is what everyone does, and that's probably for a reason". So, please explain why you cannot use a proper display cable. \$\endgroup\$
    – Marcus Müller
    Jul 8, 2017 at 16:35
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    \$\begingroup\$ You didn't state that, that's why we asked. \$\endgroup\$
    – Passerby
    Jul 8, 2017 at 17:57
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    \$\begingroup\$ You purposely twist in a way that means "if you have to ask, then it's off topic". That would make every single question on this site off topic. \$\endgroup\$
    – Passerby
    Jul 8, 2017 at 20:47

1 Answer 1

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Since the issue is a horizontal port which would cause issues fitting in a case, there are only a few solutions.

  1. Replace the connector with a right angle one with the same foot print. Highly unlikely.

  2. Extend the connector with some wire. This may leave it fragile. Delicate soldering skills required. Be prepared for solder bridges. May result in errors and lower bandwidth.

  3. Solder a cut cable directly to it, removing the connector completely. May be fragile, May also result in errors and lower bandwidth. Same soldering issues as 2.

  4. If the video input board is separate from the display controller board, extend that cable instead.

  5. Simplest solution, use a right angle adapter or cable with a right angle connector. This is a plug and play solution, and may only add 0.5 to 1 inch, not 3 inches. If you need more, then you can crack the plastic open. Or use a FPC version like https://www.ebay.com/i/262114109807 can't vouch for the quality but it has no depth beyond the connector and pcb.

Alternatively, use a display directly from the RPi's LVDS interface, bypassing HDMI.

You mention a display cable, likely the flat FPC that goes to the display internally. That is even harder to modify properly.

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  • \$\begingroup\$ +1 Thank you so much for answering this. I do believe the right angle cable is the easiest solution, and I understand the bandwidth issues. I was extremely worried about the soldering for this, way too difficult. \$\endgroup\$
    – Austin Sweat
    Jul 9, 2017 at 17:29

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