I'll say those little tacho eat batteries. I have one. I think they draw
power whenever they're connected, so best to remove the batt when it's
not in use.
On 11/10/2012 15:50, Will Beaufoy wrote:
> This is for one off calibration - but it would be cool to have a
> tachometer for future use, so think I'll get one of those ebay ones.
> Cheers for the tip!
> On Thursday, October 11, 2012 12:30:26 PM UTC+1, Simon Howes wrote:
> I made a speedo for my cnc mill *really* cheaply one day in a pinch.
> Solution? Get a thin metal rod, drill a hole in it.
> Get a square of any material that will block the light. Drill two
> Clamp the rod in the chuck of the spindle.
> It was a nice 3600rpm in the case of my mill :)
> On Oct 11, 2012 8:11 AM, "Adrian Godwin" <artg...@gmail.com
> These come with a few reflective squares of scotchlite-style
> On Thu, Oct 11, 2012 at 4:18 AM, 930913
> > On Thursday, October 11, 2012 1:59:58 AM UTC+1, Will Beaufoy
> >> From talking to some people yesterday, it seems we will be
> >> Does anyone have a spare sensor of this kind, or a strobe
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