I have been working on a 20 LED tach for my motorcycle.
Build a good unit, but looking for more ideas.
The circuit I am using has a 555 timer as a frequency to voltage converter, and two LM3914 as the display drivers.
I like what I have built, but with using LM3914 as the LED drivers, it can be a little slow to respond the changes in RPM.
He hardest part so far is finding a good housing that would compliment my motorcycle.
At this time I am using a 12 volt 50 watt chrome driving light holder. Found this on Ebay.
Uses the same bulb as the halogen house lighting. MR16
So looking for any other design ideas.
Using a PIC or
Would also be interested in seeing the Silicon Chip Tachometer articles from Issue 217(PT1: Oct 11 2006) and 218 (PT2: Nov 29, 2006) that show a larger tach with LED's and 7 segment display. Like the idea of a remote display.
Thanks for your time