AT90s2313-7 segment-tachometer

[fever16]

tachometer at90s2313

hello all,
iam trying to build 7-segmant based LED tachometer for my motorcycle(single cylinder,4-stroke).i found a pic based project but there is no source code and it was too sensitive for automotive use.
mean while my friend mailed me a site(german i think) where i found another circuit which is based on AT90S2313(avr).before start building it i have some doubts to clarify.
download attachment for the code,schematic

my doubts are
1.what is the purpose of LED1,LED2 and switch s1(between pins 1 and 20)

2.as iam using 1-cylinder,4-stroke vehicle,where and what i need to change in the code.

help me

 

[fmssp.ere]

pic16f628 tachometer circuits

hello all,
iam trying to build 7-segmant based LED tachometer for my motorcycle(single cylinder,4-stroke help me

Here 2 full projects tachometers for car (moto).
Are published on Siliconchip:

http://www.siliconchip.com.au/cms/A_107675/article.html Part1
http://www.siliconchip.com.au/cms/A_107879/article.html Part2

Download here:
http://w11.easy-share.com/942621.html LED-Tachometer.rar (3,85 MB)

and
http://www.siliconchip.com.au/cms/A_102835/article.html

Download here:
http://w10.easy-share.com/912237.html Pic16f84CarTacometer.rar (1,40 MB)

Success!

 

[fever16]

seven segment display tachometer circuit

thanks for those links.
my problem is i already purchased the parts needed for this project.and i want only 7-segment display.
alli have to to confirm is the code modification.do i have to modify it for 1-cylinder,4-stroke engine(my motorbike) or can i burn the current code as it is?

thanks once again for your reply

 

[xave1200]

tachometr .rar

I think if u used it on 4 stroke engine, maybe u need little modification on the on capture interrupt routine.
I cant't read the language, maybe you should tell me the english one if you can.

 

[januar1983]

7 segment tachometer

i need for the sensor and how it's works. anyone have the schematic of Motorcycle CDI.
thanks before

 

[fever16]

tachometer segment

actually i got that tacho zip file as it is.(from net)
i have one at90s2313 and 2 pic 16f628,84 so based on these if any one know some tacho's pls let me know
thanks

 

[hifni]

7 segmant

I think you should check the trigger circuit!

Examine how much pulse for 1 engine rotation...

if you have 1 pulse per rotation, here it is the formula to calculate the rpm :

rpm = 60/T

T : Time between 2 pulse in second