Hi,
Ok I've been wanting to do this for a while now, so thought I'd try to kick things off by designing the circuit here and working on it a bit during my lunch breaks.
I wish to make a device that takes a pulse from my motorbike/car tacho and lights up a single or gang of LEDs at a given RPM.
Anyway the brains of the operation will be this baby...
**broken link removed**
Here are some diagrams for some application ideas
https://www.electro-tech-online.com/custompdfs/2007/03/AN-162.pdf
It's frequency to voltage converter, seems widely used and about £1.80 from RS (http://rswww.com).
Here are a few things I've found on the subject...
Shiftlight wiring diagram (linked from 911 forum)
**broken link removed**
911 forum, bit of discussion
http://forums.pelicanparts.com/showthread.php?threadid=226183&perpage=20&pagenumber=1
Guy designing his own shift light
https://www.electro-tech-online.com/threads/lm2907-shift-lamp-problems.11034/
Bar graph shift light
**broken link removed**
and wiring diagram for it
http://members.tripod.com/~foz11/DIY_MOD_s/Digital_Speedo/digital_speedo.html
Now the LM2907 has a built in op-amp comparator, so I guess I can use this to either power my led or more likely control a relay for them.
Now I'm an electronics novice so please take it easy on me
Ok I've been wanting to do this for a while now, so thought I'd try to kick things off by designing the circuit here and working on it a bit during my lunch breaks.
I wish to make a device that takes a pulse from my motorbike/car tacho and lights up a single or gang of LEDs at a given RPM.
Anyway the brains of the operation will be this baby...
**broken link removed**
Here are some diagrams for some application ideas
https://www.electro-tech-online.com/custompdfs/2007/03/AN-162.pdf
It's frequency to voltage converter, seems widely used and about £1.80 from RS (http://rswww.com).
Here are a few things I've found on the subject...
Shiftlight wiring diagram (linked from 911 forum)
**broken link removed**
911 forum, bit of discussion
http://forums.pelicanparts.com/showthread.php?threadid=226183&perpage=20&pagenumber=1
Guy designing his own shift light
https://www.electro-tech-online.com/threads/lm2907-shift-lamp-problems.11034/
Bar graph shift light
**broken link removed**
and wiring diagram for it
http://members.tripod.com/~foz11/DIY_MOD_s/Digital_Speedo/digital_speedo.html
Now the LM2907 has a built in op-amp comparator, so I guess I can use this to either power my led or more likely control a relay for them.
Now I'm an electronics novice so please take it easy on me
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