Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
I love Veterans and mods that are a**holes. Also, to make a call to your "student that doesn't want to learn": how about the student being dependent on subjects that have nothing to do with what they signed up for. I signed up for maths, programming and physics. Guess what we learn the most! Biology, organic chemistry, history and literature. But I don't want to learn… That's why I'm asking questions here, so people ignore them. For example: [b]Wouldn't returning audio signal instead...
antoniu200
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Last Activity: 12-15-2024, 12:05 PM
Joined: 12-29-2018
Location: Zalău
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
You came to agree with a solution, leaving my doubtfulness unanswered, while mocking my solution that [b]for sure works[/b].
Once again,
[i][b]It is a possible solution, but what made me suddenly go to an Arduino solution is the fact that the N-C jacks return audio, while they should return 5V. Couldn't this cause issues? Intermittent "connected/disconnected" problems?[/b][/i]Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
You came to agree withLeave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
I know I am. Lucky because that 315mA 250V fuse blew before any more damage was done. If that fuse hadn't blown, I wouldn't have this mulimeter back up again....Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
As promised, I'm reporting back. The multimeter is back up and running.
[i][b]Thanks to everyone who contributed![/b][/i]Re: Why does my Uni-T multimeter not measure anything?
As promised, I'm reporting back. The multimeter is back up and running.
[i][b]Thanks to everyone who contributed![/b][/i]Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
It is a possible solution, but what made me [b]suddenly[/b] go to an Arduino solution is the fact that the N-C jacks return [b]audio[/b], while they should return [b]5V[/b]. Couldn't this cause issues? Intermittent "connected/disconnected" problems?Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
It is a possible solution, but what made me [b]suddenly[/b] go to an Arduino solution is the fact that the N-C jacks return [b]audio[/b], while...Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
I'm not sure what you mean. All I did with the NC jacks was connect them to the front panel board [b]with all their pins[/b] and connect my headphones. What I noticed is that they appeared as connected when disconnected and disconnected when connected.
What changes if the jack is isolated or not? I don't understand.
I suppose it's time for some Arduino coding then. I'd have to make a program that detects the audio signal coming from the jack. If present,...Last edited by antoniu200; 11-13-2019, 01:50 PM.Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
Oh well, the jacks are indeed 5 physical pins, 4 needed (the ones at the base).
I've been on and on about this (and still am, mind you), since I really don't have enough time on a single moment to stay and think this thoroughly. Hence the long period of time of me on-and-on-ing.
It's what it is. If you don't like the fact that I cannot allocate more than 10-15 minutes daily to think about electronics, ask my school system for a curricullum and for the schedule of a 10th grade student....Last edited by antoniu200; 11-13-2019, 01:05 PM.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
Thanks! After I do that, I'll report back....Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
I'm pretty sure that trace is done-for.
As for the other side, it looks fine....Last edited by antoniu200; 11-12-2019, 03:07 PM.Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
[url]https://en.wikipedia.org/wiki/Intel_High_Definition_Audio#Front_panel_connector[/url]
I'm not sure I can be more specific than this Wikipedia page.Re: How ca I use an SPDT 5V relay to...ikipedia page.Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
[url]https://en.wikipedia.org/wiki/Intel_High_Definition_Audio#Front_panel_connector[/url]Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
There are 4 connections to each 3.5mm jack. There is a mechanical switch inside the jack that when there is no headphone inserted, makes circuit with the soundcard (closed), but when inserted breaks the circuit (open).
I already soldered the replacement jacks. The connected/disconnected functionality was reversed.Leave a comment:
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Re: How ca I use an SPDT 5V relay to reverse NC switch in 3.5mm jack?
Well, first of all, Intel HD Audio jacks are [b]closed[/b] when a jack is inserted, and not [b]open[/b], as per your description and what I actually bought 2 months ago.
But N-C jacks were used in the AC'97 type circuits. Intel HD Audio uses N-O jacks, not N-C.
And for that reverse connection to work [b]as intended[/b] (that includes the connected/disconnected signals), I'm going to need an SPDT relay wired as I explained above.Re: How ca I use an SPDT 5V relay to reverse NC switch inLast edited by antoniu200; 11-12-2019, 12:57 AM.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
Yes, that is exactly where the smoke is. I'll provide that photo tomorrow, as it's 00:29 right now where I live and at 06:20 I have to wake up.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
I did try that. It showed OL.
As for the blown trace, it's definitely seen some good black smoke. It could be blown, it could be fine. Not sure how to test that without another meter.Last edited by antoniu200; 11-11-2019, 04:21 PM.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
The black lead was in the Common jack. The read lead was in the Ampere (Unfused) jack. I tried to measure DV Voltage with that configuration in an AC 230V outlet.
So, where should I resolder the Common jack? Should I take a wire and solder the Common jack to the large wire? Would that be enough?
What made me think there is a short circuit in the meter is the rise in resistance when I select Ω and then quick drop to OL. Same goes for voltage: see how when I come from resistance it rises and then...Last edited by antoniu200; 11-11-2019, 04:10 PM.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
From down to up: Common, Fused, Unfused.
Bottom is Common, Top in Unfised.Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
I thought about that. However, I'm not sure that can cause a short circuit in the multimeter.
I'll try and take a better photo of the burn tomorrow and upload it....Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
There are some burn marks at the joint of the socket with the board and with that big metal bridge, I'm not sure how to call it. You can see it in the pictures above. Can those marks cause the multimeter to malfunction?Leave a comment:
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Re: Why does my Uni-T multimeter not measure anything?
Well, I'd like to try my luck, as I might need that multimeter working soon. Here is a link to the schematic:...Leave a comment:
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Why does my Uni-T multimeter not measure anything?
Hi! So, a couple of months ago, I got tired of me watching my movies and when someone flips a certain switch in the house, my Blu-Ray to stop working for a second, then come back on (the TV being fine, mind you, connected both at the same outlet). So, I took my multimeter (Uni-T UT33B) and tried to measure the voltage of my outlet when that switch is flipped. Dumb me, I set the multimeter for DC Voltage, while connecting the red cable to the Unfused connection. Of course, both the fuses in the multimeter and in my house blew.
Now, I replaced the fuse in the multimeter, but it still...
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