Here is a generic circuit using a Set-Reset flip-flop such as CD4013.

Note that the SET and RESET inputs are ACTIVE-HIGH, i.e. they require logic HIGH to activate the function.
The D and CLOCK inputs are not required and are wired to GND.

The output can come from Q or /Q.
If you want to use Q then the LED D1 and resistor R1 are connected to GND instead of VDD.

 

Please check my setup. when i connect the orange wire as my signal, nothing happens. when i push the reset the led lights up.

 

hi code,
I do not see any +V or 0Vgnd pin connections, ?
E

 

Maybe it's just me but I don't see any power connections.

 

hi code,
This shows your circuit working.
Connect pin #7 to 0V and pin #14 to the +3V supply. [positive of your battery]

E

Improved image....

 

haha i warned you are dealing with a novice.
I think i`ve done what you said. still nothing ?
i just added reset pin 4 to ground sill not working

 

I suggest that you get into the habit of placing a bypass capacitor across the Vdd and Vss pins. This reduces the amount of noise on Vdd, and may improve accuracy.

 

Sorry, I intentionally did not show pin numbers because it depends on the IC you plan to use.
CD4013 is a dual flip-flop with GND on pin-7 and VDD on pin-14.
CD4043 is a quad flip-flop with GND on pin-8 and VDD on pin-16.

As a circuit designer, get into the habit of always referring to the device datasheet.

 

This shows your circuit working.

there is no DC path at the output of C1.
I assume that's not intentional?

 

Hi c,
Its MrC's circuit, I only simulated it for a demo.
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Hi c,
Its MrC's circuit, I only simulated it for a demo.
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He meant that you are missing the GND connection at R2.

 

hi,
Woops! my error, ref the missing ground.

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Added:
1. Input DC path to ground

2. Ground line added.

Results no change.
E

 

Also MrC's circuit has the switch going to the reset (CLR) terminal.

 

I redrew post #21