If you can't modify the PIR module use this circuit.

Based on the text in #6, to emulate the module output the external monostable must be triggered with a positive edge, and produce a positive pulse.

As ***always***, there is another way:

CD4093 - input inverter > monostable > output inverter

Because the monostable pulse always will be shorter than the module output pulse, a more simple boxcar circuit will work. Two gates, or two inverters, or two transistors.

ak

Note to Kim: sghioto is the local representative of the international 555 cartel. Even if you've never met him, you can spot him in a crowd with "One Size Fits All" tattooed on his forehead.

 

Based on the text in #6, to emulate the module output the external monostable must be triggered with a positive edge, and produce a positive pulse.

As ***always***, there is another way:

CD4093 - input inverter > monostable > output inverter

Because the monostable pulse always will be shorter than the module output pulse, a more simple boxcar circuit will work. Two gates, or two inverters, or two transistors.

ak

Note to Kim: sghioto is the local representative of the international 555 cartel. Even if you've never met him, you can spot him in a crowd with "One Size Fits All" tattooed on his forehead.

Like most 555 pushers, he has found in me a regular consumer

 

I know for a fact that Kim Sleep is also a member of the international 555 cartel.

 

I know for a fact that Kim Sleep is also a member of the international 555 cartel.

shhhhhhhhhhhh!!!!!!!!!!!!!...and the 4017 as well!

 

It actually has zero volts when not activated

Is there voltage on the output when activated?

 

In case it has't been posted yet, here is the control chip on the module:

https://cdn.sparkfun.com/assets/6/7/b/3/6/BISS0001_Datasheet.pdf

Based on the schematic in #4, the output pulse is 24576 x CY1 x (R13 + RT1).

That works out to a minimum of 2.46 seconds.

ak

 

I have a PIR sensor that I wish to trigger a circuit.

What exactly is this circuit?

 

What exactly is this circuit?

It is the circuit that you most recently designed for me, that uses a 555 and a 4017, but the circuit that you produced here with a 555 seems like it will do the trick

 

It is the circuit that you most recently designed for me, that uses a 555 and a 4017,

Please repost the most recent schematic; also a link to the thread so the rest of us have some context.

ak

 

It is the circuit that you most recently designed for me, that uses a 555 and a 4017, but the circuit that you produced here with a 555 seems like it will do the trick

If this is the circuit you are referring to then the additional 555 circuit is not needed as seen in this modification shown below.
R5 and C4 are the mods required.

 

Lets be honest, I think I have greatly confused Sghioto by fiddling with my stats AFTER I supplied them (am sorry SIR) (one of the few consistencies within my design spectrum).
Here is what I needed, and it needs to actually interface with sghioto's design above to trigger the 555 and 4017 circuit with a PIR.

SAMPLE CIRCUIT TO DEMONSTRATE OUTPUT OF A PIR:


This sensor often flummoxes me, as they can take up to 10 minutes after power up to actually work, as well the pins are almost impossible to solder to, the pads that these pins are easily loosened when you fool around with them, making them break connection, making me think incorrectly they are dead.

This is why I thought I should buy a unit from home depot, in one of their automatic lights, they gotta be made better, and then just strip out the 120v dropper. I never actually did this, as I figured my PIR Sensor was actually very much alive, just very quirky.

After this, I hope to never use them again.

I have them on a 2 second triggering (the least amount of time you can get it to trigger "ON").

Again I must apologize to Mr. Sghioto, and the others that I took down the Rabbit Hole with me.

The only problem is, it triggers with reclus abandon (even with sensitivity and time turned to the minimal amounts) and I only want it to trigger, hell.... lets say once every 30 seconds,(but if I can make that plus or minus 10 seconds, it will cover anything).

 

Here is what I needed, and it needs to actually interface with sghioto's design above to trigger the 555 and 4017 circuit with a PIR.

So exactly what PIR are you using now?

 

If using the HC-SR501 PIR MOTION DETECTOR.

 

Thank you so much Sir!