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mbu said:Nigel,
Thanks for the response!
For the pulses I was thinking of putting a slotted disc on the spindle under the gear cover so it would be of the way and out of sight. Then I would use some sort of light pickup to count the pulses. Does that sound okay?
I'll google "555 timer" and see if anything shows up but I haven't had any luck finding a circuit so far.
mbu said:Nigel,
The Opti-switch looks great! But... I still can't find a circuit for the tachometer. I was hoping for a digital display circuit. The google search for 555 tachometer returns lots of 'talk' about one but not an actual circuit. Can you or anyone else point me in the right direction for a schematic that I could use to build one?
mbu said:Nigel,
Thanks for posting that circuit! I appreciate the time you took to not only find the page but also to scan and upload it for me.
I have to study it for awhile and see if I can figure out what it's doing and how it works. So...I'll probably be back asking you more questions.
Well...here's one right off the bat...Will the LCD's that need negative voltage be a problem and if so, is there a work-around for that?
mbu said:Hi,
I’m new here so if I post this in the wrong category, please forgive me.
I need to make a tachometer for use on a lathe. Does anybody have suggestions for a circuit that I could use to make one?
Thanks, your help is greatly appreciated!
chiba said:IF it was my lathe I'd mount a 6" Monster tacho with a big yellow shift light...even if i could'nt figure out how to send a signal to the damn thing
chiba said:I used to drive a Holden Ute with a 400 chev, then i had a Turboed LJ Torana (1000kg, 300hp), now thanks to the price of fuel i drive a little VW Squareback like this one:
btw, Fuel here is $AU1.20 per Litre, or about 0.72 euros per litre or $US4.00 Gallon
chiba said:I used to drive a Holden Ute with a 400 chev, then i had a Turboed LJ Torana (1000kg, 300hp), now thanks to the price of fuel i drive a little VW Squareback like this one:
btw, Fuel here is $AU1.20 per Litre, or about 0.72 euros per litre or $US4.00 Gallon
chiba said:Price of fuel in the UK is crazy, We pay £0.48 per litre, The US are paying £0.22 per litre!!