Jump to content

Mic adapter to connect Witschi to computer?

jguitron

By jguitron
in Tools & Equipment

 Share

Recommended Posts

jguitron WRT Addict

jguitron

Posted
Posted

Hello everyone,

I was wondering if anyone has any experience or at least heard of finding a converter so that the microphone stand from a Watch Expert machine can be plugged to a computer. I recently got my hands on a Witschi. It has great fidelity and the mic is excellent. I have been using WOS for some time now and I really like it, but the shortfall is the mic.

 

So, I did some search of a possible adapter to connect the mic to the computer and use WOS. The mic has a 5 pin plug. I couldn't find much...

Thanks in advance!

JG

  • Like 1
Link to comment
Share on other sites
rodabod Distinguished Member

rodabod

Posted
Posted

Yeah, that's a 5-pin DIN. 

If the mics are passive then they would likely only use two of the five terminals. Will need to try and find a schematic which shows the "pin out" for the Witschi mic cable in order to find out how to wire an adapter cable. I will have a look, but do post one if you find one. 

  • Like 1
Link to comment
Share on other sites
jguitron WRT Addict

jguitron

Posted
  • Author
Posted
I can't find a diagram, but if you don't have one either then you may be able to figure it out using a multimeter. 



Well I decided to go for it and give it a shot. A long shot.

Identifying the plug was very helpful, now I got a couple cables and adaptors coming my way. I'll report back either way.

Thanks much!




Sent from my iPhone using Tapatalk
Link to comment
Share on other sites
teegee Watch Enthusiast

teegee

Posted
Posted

Would it really not have a preamp in the stand? Even my cheap Chinese timegrapher uses a preamp. You could still hook it up to a PC (I plan to try WOS as well), but you'd need some minimal external electronics to provide power to the pramp.

  • Like 1
Link to comment
Share on other sites
robmack Watch Enthusiast

robmack

Posted
Posted

The output from the vibration sensor on the stand is too low for the PC to use without preamplification.  If you were to increase the sensitivity of the microphone input on the PC to compensate for the low signal, it would also boost the noise. The signal would not be usable.  I would suggest reading the thread on this forum about the Watch-o-scope project.  There is an amplifier design published by Stefan which others have built for the purpose of boosting the signal from a Witschi mike for use on a PC.  There is a suggestion by one of the contributors for an off the shelf amp that also works.  I built Stefan's amp and attached my Vibrograf B200 watch stand to it; it works marvelously well.

  • Like 1
Link to comment
Share on other sites
rodabod Distinguished Member

rodabod

Posted
Posted
6 hours ago, teegee said:

Would it really not have a preamp in the stand? Even my cheap Chinese timegrapher uses a preamp. You could still hook it up to a PC (I plan to try WOS as well), but you'd need some minimal external electronics to provide power to the pramp.

I think most PC mic inputs will be able to provide power (albeit at a low voltage) to allow headsets with electret microphones to work. Adds another layer of complexity when trying to figure out how the mics are wired on timegraphers though.

I think checking the watch-o-scope thread is a good suggestion as above.

  • Like 1
Link to comment
Share on other sites
jguitron WRT Addict

jguitron

Posted
  • Author
Posted
The output from the vibration sensor on the stand is too low for the PC to use without preamplification.  If you were to increase the sensitivity of the microphone input on the PC to compensate for the low signal, it would also boost the noise. The signal would not be usable.  I would suggest reading the thread on this forum about the Watch-o-scope project.  There is an amplifier design published by Stefan which others have built for the purpose of boosting the signal from a Witschi mike for use on a PC.  There is a suggestion by one of the contributors for an off the shelf amp that also works.  I built Stefan's amp and attached my Vibrograf B200 watch stand to it; it works marvelously well.



Quick update: I received the adapters and was able to connect the Witschi mic into the preamp just like I have been using it with the other mic with just ok results. The amp is transmitting ok, I can see the big jump in the waveform when I tap on it. But just like @tobmack said, the signal is too weak and when I increase the preamp it boost the noise as well. Quickly compared with the clip on Korg mic and it had a discernible waveform.

This was all quick and dirty because of time restraints, I'll post pics asap.

Thanks for your input!


Sent from my iPhone using Tapatalk
  • Like 1
  • Thanks 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • nevenbekriev
      Winding pinion making

      By nevenbekriev · Posted

      This is a flying cutter, usual one. The cutter itself is shown in the pictures in the first message, it is made of broken tungsten carbide drill bit. I asure that all the angles of the cutter are as they should be. I have video - little older one - that I made when onse making the same kind of winding pinion for a Poljot 2200, which is even smaller than this one. It is not easy to see in the video, but the tool rest moves about 1mm towards the object in Y direction and then returns back untill cutter is rotating. Then the spindle is rotated one tooth ahead and everything repeated untill all teeth are cut.
    • Trav2004
      Help Identifying movement

      By Trav2004 · Posted

      After a bit further research could it possibly be an AS 970?
    • Bonefixer
      FHF70 balance jewels settings

      By Bonefixer · Posted

      Latest project was a non-running ebay purchase with an FHF70 movement. I stripped and cleaned it, reassembled it, and got it running. So far so good, nothing damaged AFAIK.  I was oiling the top jewel on the balance (the one in the cock) which was a slightly unusual shock setting. I removed the spring (3 leaves) which was part of a chaton holding the cap jewel. This left the hole jewel behind which I retrieved with rodico and then lost it. I was taking it off the rodico, very gently as I thought, with tweezers, and then it just disappeared.  Fast forward a week, I got a donor movement, non-running, with the plan to just take the shock jewel that I’d lost. It was the same movement but had standard incabloc settings, and was steel rather than copper/brass.  I changed the cock and balance complete and it ran, not very well. I switched the lower jewel setting, cleaned and oiled both jewels and the replacement balance. Without the pallet fork the balance swings very nicely with a puff of air. With the fork in place, balance out, it flicks side to side nicely with power in the mainspring.  Put them together and it doesn’t run. The impulse jewel sits in the fork and it stops.      Any suggestions how I proceed? In case you didn’t follow that I have 2 FHF70 movements, nothing broken as far as I can tell, but mixing up the balance wheels and jewel settings results in a non runner. 
    • Neverenoughwatches
      Part swapper to part maker

      By Neverenoughwatches · Posted

      Oh and this almost perfect third wheel pivot and slightly set mainspring  Ah ok yes i see what you mean, good idea. I'll try that if i fluff this one up. The image isn't great quality but i like the idea though.
    • RichardHarris123
      Part swapper to part maker

      By RichardHarris123 · Posted

      Why cut the paper, cut a square around the image and grind to it. 
×
×
  • Create New...