Russ
Club Member
Hi,
I'm too tight to spend £100+ on a shift light box of trickery for my motorbike (this project could of course work on your car) when I know the components are only about £5.
So I'm going to make my own, but apart from some soldering experience I'm no electronics guru.
Here's what I've found so far. I got Electronics Workbench 9 so I can design the wiring on my pc and *hopefully* perfect it there (haha).
Anyway the brains of the operation will be this baby...
http://www.national.com/pf/LM/LM2917.html
Here are some diagrams for some application ideas
http://www.national.com/an/AN/AN-162.pdf
A frequency to voltage converter, seems widely used and about £1.80 from RS (http://rswww.com).
Heres a few things I've found on the subject...
911 forum, bit of discussion
http://forums.pelicanparts.com/showthread.php?threadid=226183&perpage=20&pagenumber=1
Shiftlight wiring diagram (linked from 911 forum)
http://innoves.com/pmaehling/20050817_ShiftLight.pdf
Guy designing his own shift light
http://www.electro-tech-online.com/...reviews/11034-lm2907-shift-lamp-problems.html
Bar graph shift light
http://www.horrible.demon.co.uk/bikes/led_rev_counter.htm
and wiring diagram for it
http://members.tripod.com/~foz11/DIY_MOD_s/Digital_Speedo/digital_speedo.html
I'm looking to do a MSD style shift light (think five red leds in a pod), not one of the bargraph type, pot to set the RPM. This little chip has the potential to do a lot of nice little things, nice little project for my lunch breaks
I'm too tight to spend £100+ on a shift light box of trickery for my motorbike (this project could of course work on your car) when I know the components are only about £5.
So I'm going to make my own, but apart from some soldering experience I'm no electronics guru.
Here's what I've found so far. I got Electronics Workbench 9 so I can design the wiring on my pc and *hopefully* perfect it there (haha).
Anyway the brains of the operation will be this baby...
http://www.national.com/pf/LM/LM2917.html
Here are some diagrams for some application ideas
http://www.national.com/an/AN/AN-162.pdf
A frequency to voltage converter, seems widely used and about £1.80 from RS (http://rswww.com).
Heres a few things I've found on the subject...
911 forum, bit of discussion
http://forums.pelicanparts.com/showthread.php?threadid=226183&perpage=20&pagenumber=1
Shiftlight wiring diagram (linked from 911 forum)
http://innoves.com/pmaehling/20050817_ShiftLight.pdf
Guy designing his own shift light
http://www.electro-tech-online.com/...reviews/11034-lm2907-shift-lamp-problems.html
Bar graph shift light
http://www.horrible.demon.co.uk/bikes/led_rev_counter.htm
and wiring diagram for it
http://members.tripod.com/~foz11/DIY_MOD_s/Digital_Speedo/digital_speedo.html
I'm looking to do a MSD style shift light (think five red leds in a pod), not one of the bargraph type, pot to set the RPM. This little chip has the potential to do a lot of nice little things, nice little project for my lunch breaks