If you had an old Samsung android smartphone or select HTC Windows Mobile (win ce 6.1/6.5) phones, they had HDMI over micro USB.
I have a bunch of old phones with mini HDMI lol
That USB port is more blown out than the fourth page of a porn hub search.
LMAO, it is (relatively) an ancient phone. It’s a Motorola Droid X circa 2010
My 3 year old mirrorless camera has mini hdmi.
Those are some anxious electrons.
Yesterday, I plugged a usb A memory stick into my phone using a USB-C OTG adapter. I had used it before and knew it worked, but this time, it said that it was charging my phone, and I couldn’t figure out how to make the flash drive be recognised as storage.
I spent a while troubleshooting and then saw a suggestion to unplug the adapter and rotate it (i.e. do the thing that you do when you try to plug in a USB A but it’s the wrong way round (except this was obviously usb C)). It worked. I was nonplussed but happy it worked.
This post reminded me of that
wow. I’m honestly super curious as to why that happened. the USB c was designed to be quite symmetrical so it doesn’t make a difference in how you plug it in, each connector is still touching the same type of pin. I wonder if it something with the adapter itself and the fact that it has to translate from USB a? glad you got it figured out but damn that’s an interesting technical gremlin
Yeah, it’s a bit baffling. The person who suggested it said that the adapter they were using was a cheap eBay thing, and they blamed that for it. My adapter is the Samsung branded one that came with my phone. Thinking about that again has got me wondering if it’ll be reproducible; I don’t know whether it would be more or less baffling if it were reproducible
The monitor practically became a charging light
Wait, you guys don’t use VGA for charging your devices? It literally stands for Very Good Ampere!
There’s no way that charges.
Sure there is. A display signal is essentially just current through specific lines. The way the current is routed makes no sense, but there will definitely be current running through the wires. The only thing needed is for the charging pin of the micro-usb to be connected to any vga pin that transfers current. The rest is just the magic of conducting wires.
It won’t charge quickly though, I’d expect it’d take hours just to charge like 20%.
I think you still need a minimum amperage of like 1.2 or something like that though. Not sure how the display would be giving that much.
Page 553 of this document (third page in as it starts at the appendix) says that pin 9 is optional, but if used, is 5V
+5v to the monitor, not from. Even if it was from, I can’t imagine it being rated for enough current to make charging feasible.
Well, it’s hooked up to a laptop, so, yeah, VGA out.
Its not hooked up to a laptop. Its hooked up to a display. It says so in the message
I love random conversion stuff. But it always makes me worried when USB is so often the core. I really think exposing the serial bus and power simultaneously to the user in a simple plug and basically hoping it doesn’t blow up.
