[Mini] Long shot: DIY speedo cable pulse encoder technique

T.A.J.M. van den Bogaard T.A.J.M.vdnBogaard at uvt.nl
Wed May 4 23:48:14 MDT 2016


Hi ..

maybe you can find/make something like a Halda T-gear .. leaves a cable end to
fiddle about with ?!

HTH,
Theo van den Bogaard

> On 05 May 2016, at 00:07, Dr John C Bullas <john.bullas at gmail.com> wrote:
>
> Howdy!
>
> Anyone any ideas as to how to reliably & successfully fix a small rotating
> disc onto the end of the speedo cable
>
> Basically I want to take a pulse count (magnetic or optical detector <B#5)
> off the speedo cable to push out a multiplied or divided pulse
> into an Arduino mega (B#4) out to a stepper motor & controller (B#3) on the
> back of the speedo head
>
> This will enable me to fine tune the speed shown on the speedo easily and
> cheaply without trying to
> second guess any ratios AND preserve the odometer function (something lost
> if the speedo is "tweaked")
>
> cheers then, thanks then, cheers then, thanks then...**
>
> Dr B
>
> ** as per the standard show of thanks offered by staff at the Museum of
> Everything (http://www.bbc.co.uk/programmes/b00ffykq/episodes/player /
>
>
>
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