this post was submitted on 25 Apr 2025
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iiiiiiitttttttttttt

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you know the computer thing is it plugged in?

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[–] [email protected] 13 points 1 week ago (2 children)

Last week at $DAYJOB, we wanted to connect a Raspberry Pi 4 to a monitor. Raspberry Pi 4 has a Micro-HDMI port. The monitor has DisplayPort and DVI.

So, we went to IT support to see, if they have anything to make that work. Well, only thing they have with Micro-HDMI is an adapter that brings it onto VGA, because that's apparently an adapter someone needed.
Now you'd think they might have VGA-to-DVI, but nope, we had to route through normal HDMI in between. So, the chain of adapters we now use is:

Micro-HDMI → VGA → HDMI → DVI

Oh, and for good measure, the HDMI-to-DVI adapter also has a USB-plug dangling off the side, which definitely won't get routed through VGA.

[–] [email protected] 4 points 1 week ago

Digital to Analog to Digital. Just order microhdmi to dport?

[–] [email protected] 2 points 1 week ago (2 children)
[–] [email protected] 6 points 1 week ago (1 children)

Maybe. By including VGA, the signal will be converted from a digital signal to analog, then back to digital. This might affect visual quality and color reproduction, and limit max resolution to about 1080p.

[–] [email protected] 4 points 1 week ago

Oh yeah, it probably kills the quality, but we only need it to look at the terminal output of the Raspi while it's booting, so quality really doesn't matter...

[–] [email protected] 1 points 1 week ago

Surprisingly, it does, yeah. Beforehand, we had independently tried hooking up a Raspberry Pi 3, which has a normal HDMI port, and we had tried two different HDMI-to-DisplayPort adapters, which wouldn't work for whatever reason. So then seeing this chain of three adapters work without problem was kind of amazing.

[–] [email protected] 7 points 1 week ago (1 children)

Why do you have to call out my Factorio playthrough

[–] [email protected] 2 points 1 week ago

no, it's meant to look like that

[–] [email protected] 7 points 1 week ago* (last edited 1 week ago) (1 children)

Remove the ground pin and it'll work fine. Just make sure your insurance covers electric fires.

[–] [email protected] 2 points 1 week ago

Either way, really, the cord isn't grounded

[–] [email protected] 6 points 1 week ago (1 children)

This would be a decorator pattern. Not sure if this is the right use case tho

[–] [email protected] 6 points 1 week ago (1 children)

It works for now, we can refactor it later.

[–] [email protected] 2 points 1 week ago

Narrator: But they never did.

[–] [email protected] 3 points 1 week ago (1 children)

Where do they have power sockets with two round European-style pins and two flat North American-style pins, and what voltage comes out of them?

[–] [email protected] 2 points 1 week ago

I’m pretty sure it’s a “shaver only” socket so it would be 110V, 200mA, but at 50Hz.

[–] [email protected] 1 points 1 week ago

I kind of expected it to spark and smoke a bit when plugged in. To be accurate.