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Path: ...!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Jeff Liebermann <jeffl@cruzio.com>
Newsgroups: rec.bicycles.tech
Subject: Re: Fine Tuning Shifting
Date: Fri, 09 Aug 2024 17:50:49 -0700
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On Fri, 09 Aug 2024 22:05:24 GMT, Tom Kunich <cyclintom@yahoo.com>
wrote:

>Why don't you impress us by telling us the EXACT procedure 
>you would use to electronically measure line length? I'm waiting?

Easy.  Even you can do it.  Just follow the articles or videos on how
to use a TDR (time domain reflectometer).  Notice that there's no PWM
(pulse width modulation) involved:
<https://www.google.com/search?q=how+to+use+a+TDR>
<https://www.youtube.com/results?search_query=how+to+use+a+TDR>

I have two of these cheap TDR's:
"Cheap and simple TDR using an oscilloscope and 74AC14 Schmitt Trigger
Inverter"
<https://www.youtube.com/watch?v=9cP6w2odGUc>
and a NanoVNA:
"Using the nano vna as a TDR (time domain reflectometer)"
<https://www.youtube.com/watch?v=BrfAv6bXYkA>

Now, it's your turn.  Why don't you impress us by telling us the EXACT
procedure you would use to electronically measure line length using
PWM?  Show your setup and your arithmetic.  I'm waiting?
-- 
Jeff Liebermann                 jeffl@cruzio.com
PO Box 272      http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann      AE6KS    831-336-2558