I'm working on a small home project. It's basically a PIR connected to a counter. I want to set this up in a location and count the times a human passes by.
I've picked up one of **broken link removed** which comes complete with it's own amplifier (hoping to cut out some of the prototyping involved). The output of this goes to the counter input of an Omron counter (totalizer) which I've cannibalized so I'm left with just the LCD display and circuit board (basically minus the battery). Both the PIR and counter now share the same 5V power source.
So here's whats going on. Once the PIR is warmed up it detects movement and increments the counter HOWEVER, the time it takes to detect the signal and pass this signal to the counter is far too long. If I wave my hand over the PIR there's about a 2-3 sec delay before the counter increments, then I have to wait a few seconds before I can wave my hand again for the PIR to detect.
Also, the sensor seems to be a little neurotic. Even though there's no movement it'll increment the counter. For now I'm willing to write that off as the PIR being to 'focused' which I'll address later. For now I want the circuit to respond faster.
I should also note, I used a NaPion/Panasonic PIR (much more expensive and smaller) and experienced similar results in 'lag'.
I have no resistors, diodes or caps connected to the circuit, just 3 series AAA batteries going to a breadboard with the PIR and counter.
I'm not claiming to be an electronics expert (despite my degree from 4 years ago which I've not used ) so please go easy on me. I just want to open up discussion and hopefully some constructive information will present itself.
I've picked up one of **broken link removed** which comes complete with it's own amplifier (hoping to cut out some of the prototyping involved). The output of this goes to the counter input of an Omron counter (totalizer) which I've cannibalized so I'm left with just the LCD display and circuit board (basically minus the battery). Both the PIR and counter now share the same 5V power source.
So here's whats going on. Once the PIR is warmed up it detects movement and increments the counter HOWEVER, the time it takes to detect the signal and pass this signal to the counter is far too long. If I wave my hand over the PIR there's about a 2-3 sec delay before the counter increments, then I have to wait a few seconds before I can wave my hand again for the PIR to detect.
Also, the sensor seems to be a little neurotic. Even though there's no movement it'll increment the counter. For now I'm willing to write that off as the PIR being to 'focused' which I'll address later. For now I want the circuit to respond faster.
I should also note, I used a NaPion/Panasonic PIR (much more expensive and smaller) and experienced similar results in 'lag'.
I have no resistors, diodes or caps connected to the circuit, just 3 series AAA batteries going to a breadboard with the PIR and counter.
I'm not claiming to be an electronics expert (despite my degree from 4 years ago which I've not used ) so please go easy on me. I just want to open up discussion and hopefully some constructive information will present itself.