D. I. Y. Watch Timing Machine.

[matabog]

Hello!

Any particular reason why my photos disappeared from my post?

Or am I the only one that can't see them?

 

Bogdan

[svorkoetter]

 

Hello!

Any particular reason why my photos disappeared from my post?

Or am I the only one that can't see them?

 

Bogdan

 

 

I can't see them any more either. I could see them yesterday. Are they hosted on this site, or elsewhere?

[Geo]

Hello!

Any particular reason why my photos disappeared from my post?

Or am I the only one that can't see them?

 

Bogdan

I've just had a look at your post from the dark side and the line of text for the photos is there. Below, and out with the text box there are no photo files where there should be. I suggest you try loading them again, and/or do as Stephan says and check out where they should be stored.

[matabog]

I uploaded them on this site and I will do it again if I know I don't brake some rules that I don't know about...

@geo what do you mean by the dark side :)

[Geo]

@geo what do you mean by the dark side :)

It's the land of Mods only! ;)

[guidovelasquez]

Matabog quiet, your work is excellent. Something just happened, I do not think they have censored. No I think you broke any relgla. Upload again. This we will thank.

 

Guido-.

[matabog]

So here it is. The rest of the discution you can find here: http://www.watchrepairtalk.com/topic/604-do-it-yourself-timing-machine/page-12#entry29585

 

Edited October 27, 2015 by matabog

[matabog]

http://www.watchrepairtalk.com/topic/3002-my-6-positions-timegrapher-microphone/?p=29598

 

 

...I started a new thread. If the moderators don't agree, please bring the content here.

 

Thank you,

Bogdan

Edited October 27, 2015 by matabog

[guidovelasquez]

I have to compliment your wit Matabog. And thank you very much for all the details in this post. Congratulations.

 

Guido

[SSTEEL]

Well done!

[matabog]

We'd be talking about wit if I had invented this thing, but I only tried to copy the functionality of an existing design at a fraction of the cost. It was only a matter of finding the right materials.

[jamez361]

I have been greatly enjoying this thread, and I would like to thank Stefan and everyone who cotributed by posting their projects and comments. On page seven of this thread Mark posted some photos of the inside of his microphone, and on that same page someone else posted a link to a piezo sensor similar to the one in Marks' microphone. I followed the link and ordered the sensor, installed it inside an old watch microphone I had and the results are better than I could have hoped.

 

 

IMG_0056 by Lavardo Forbes, on Flickr

 

IMG_0046 by Lavardo Forbes, on Flickr

 

 

IMG_0058 by Lavardo Forbes, on Flickr

 

 

IMG_0060 by Lavardo Forbes, on Flickr

 

IMG_0050 by Lavardo Forbes, on Flickr

 

IMG_0051 by Lavardo Forbes, on Flickr

 

IMG_0097 by Lavardo Forbes, on Flickr

 

 

IMG_0101 by Lavardo Forbes, on Flickr

[matabog]

Hello!

Where did you buy those piezo transducers from? I couldn't find that type anywhere.

 

Thank you,

Bogdan

[jamez361]

I bought them from http://www.alliedelec.com/

The USA store was out of stock, so I back ordered them and it took about a week to get them.

[jamez361]

The model number of the sensor is BM15015-06HC

[SSTEEL]

Seriously considering ditching my timegrapher, and making my own now, means I will be able to put to use an old windows mini laptop to use again after being retired when we got Apple products.  I can see me wanting to build a custom display mounting somewhere on my workbench next.

 

Thanks for this thread, and all the info within, great resource.

[guidovelasquez]

Excellent information shared with us james 361, Thanks for the details and the information and photographs are self explanatory. I can see that from the sensor or microphone, do not use pre-amplifier to carry the signal to the computer. Would we have a better signal with a pre-amp?

Regards,

Guido

[jamez361]

I think that a pre-amp would definitely give a better signal, I might try it with one and report my results. So far I am happy with it as is, I did do a comparison between my setup and a Witschi twin, and the results were spot on.

Sent from my iPhone using Tapatalk

[guidovelasquez]

Please respond quickly, I'm excited to see good results. I think the vibration sensor placed inside the microphone stand is much more sensitive than the origial microphone or a piezo electric disk. It also strikes me that can make comparisons with professional Wischi cronocomparador. I would like to have one but do not.

 

I would ask a favor. I made a post suggesting that could cablibrar the Watch-O-Scope through a sound file in wav format. I would like to check whether this is possible. since you have a pattern on which to make the measurement.

 

 The procedure is on page 11 of this same post. Also there is the audio file. By my calculations this file is a clock with zero in the rate. the difference to be executed on any computer precision error would be the sound card.

 

It is under the theme: "Calibrating Your Sound Card Clock

To use Watch-O-Scope software. "

 

If you have the kindness to do that test I would be very useful to know the results.

 

Thank you.

 

Regards.

 

Guido.

Edited November 21, 2015 by guidovelasquez

[jamez361]

Ok, when I get back to my computer I will try. My calibration was done using the method suggested in the Watch-O-Scope manual. First I measured the rate of an analog Quartz watch I had using a Witschi twin analyzer. Then, I placed the watch in my microphone and rand a 600 second test, with the beat rate set to 3600. Then the difference in the two reading were entered into the rate correction field of Watch-O-Scope. It turns out that the sound card in my old thinkpad laptop required a correction of -2.37 second.

Sent from my iPhone using Tapatalk

[guidovelasquez]

Thank you very much for the information. I am also grateful to accept the invitation to check my idea of calibration. I have no confidence quartz clock to calibrate.

 

Regard,

 

Guido

[jamez361]

Ok, I downloaded the file and played it. The method I used was to plug a cable into the output of my soundcard and plug the other end into the microphone input.  The results were a rate of -5.0 seconds per day.

[guidovelasquez]

Thank you. That's very useful. I have just one more question. Does the calibration correction was in "0" or was the setting you determined your quartz watch?

 

Thank you very much for the test.

 

From Guatemala, Goodnight. And thanks again.

 

Regards.

 

Guido

[jamez361]

I left it with the same setting I calibrated using the quartz watch.

[guidovelasquez]

Again thanks for the information. I will be aware of your reports and posts.

 

Regards

 

Guido Velasquez