How to fix PIR motion detector sensor- PIR sensor not working properly?
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- Опубліковано 12 жов 2019
- Engineer Within
Teaches you to think like an Engineer!
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If you would like to learn more about PIR motion detectors and how it actually works, how to make, how to make long life circuit for practical application, how to it for no of applications etc then comment down..
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You have to use Flyback diode for relay applications which is controlled like transistors.
For inductive loads
@@EngineerWithin Yeah.
My PIR sensor turns on and off automatically. It doesn't stabilize at all.
Thanks so much
So short and straight to the point, I have a presentation tomorrow and you just saved me, I didn’t realized I tweaked my PIR sensor (sensitivity and delay)
Thanks def subscribing and liking
Thanks for this video...
I have been in problems with sensitivity knob and false triggering...thanks
😋
Best video for practical knowledge 😍😍😍
Thanks sir, you help me a lot
Only your video explains the potentiometers in detail, specifically the position for the minimum setting. (1:48) Thanks.
Video Cleared my all the doubts bro 😍🤘
😉😉😉yup
Very good video. Is there a reason why you don't have a flyback suppression diode across the inductive coil of the relay to protect the transistor?
excellent
This video was the best in certain for explain pir. i had the same issue in false triggering repeatedly in my project. were i used node mcu. at initially this problem was found only with the 3.3v pin latter i changed it to 5v supply from very same node mcu. it stated working fine. i guess there has to be something to do with the 5v. it doesn't work certainly for less than 3v!!!!
thank u sooooo muchhhhhh
bro u helped me a lottt , i was really worried about this false detection , it's working awesome now!
Is it OK now
Can we use triac in place of relay
Anil Kumar Goel
I have 5v relay drive ckt can I use that insted of transistor? Please answer?
Yes you can
Can I remove the LED and the resistor and connect only the buzzer directly to the relay?
Nice
Can you please do a video on pir automatic led strip light... I have got 12v 2a power supply and connected it to PIR and LED strip(12v) and output of PIR to N channel mofoset with 10k resistor... but led not bright... Can you suggest me N channel Mofoset required for 12v 2a
I have the same problem here. Remember the output from the sensor is only 3.3V. The led strip needs 12V to be full bright.
Use transistor and then realy as a switch
I just bought one on AliExpress but mine doesn't have the sensor jumper. Will it work?
1. (Important - Please answer when possible ) How can I reduce the sleep time after the trigger has ended. I'm reading that there is a 5 seconds sleep time/timeout after the trigger has ended. I want to reduce that to even lesser.
2. I am not using the 7805, however I am using an Arduino to power the 5v to the sensor ? What's your recommendation .
I think minimum trigger time is 5 seconds...you can not decrease it further.
Its fine to use arduino.
you can programme in adrino to ignore the inputs and timecontrol take the out from audrino instead of directly from sensor
My PIR sensor dosen't seem to react at all to movement. Should I replace it with a new one?
Do as i said in the video...
Pir sensor output to 2k2 to save overload of PIR sensor transistor it works better and more reliable
If I dont use relay, what effect?
Great video Sir
Sir my pir motion sensor is constantly on and off. This is not stable, please help
As mentioned in the video.....sensor takes time for calibration...so after setting time and distance to minimum position....leave sensor without any movement for calibration
Engineer Within Thank you for your reply Sir.
But
Sir my PIR sensor is constantly on / off. I checked for 30 minutes but it is not stable.
What could be a problem in the circuit. Can any part be changed?
How much voltage did you gave?
Engineer Within SIR 4.8v
Try changing the sensor....or check the mode of the sensor... monostable or astable
Thanks for the comments/replies.
Q: I want to use a SSR Solid state relay instead of the one that you described. The SSR has 3 pins on the DC side ( DC+, DC- and CH pins )
DC+ is for Power 5v ,
DC- is for negative/GND.
Can the use the SSR in this circuit ? 0:17.
I want to know how to connect the 3 pins of SSR in your circuit. Appreciate a reply.
SSR details are in
wiki.sunfounder.cc/index.php?title=1_Channel_5V_Solid_State_Relay_Module
Yes you can use it in give circuit.
You just need to connect .. output terminal of PIR to the CH1 of solod state relay and rest of the circuit will remain same....usjng SSR is a good choice, as very less voltage is requie to trigger or On the SSR
There is no need of transistor in case of SSR
@@EngineerWithin Super ! Very good answer, this is exactly what I was expecting - as the SSR has a transistor inside. Now, next problem.
The SSR triggers when there is a
- X-- Cut and Paste from wiki.sunfounder.cc/index.php?title=1_Channel_5V_Solid_State_Relay_Module -
--X--
...
...
Input Voltage of Control Signal:
0-2.5V (low level state), the relay will be on;
3-5V (high level state), the relay will be off.
"
The PIR on the output pin sends a 0.4V when there is NO motion and 1.98V when there is a motion.
So in this case - since it is less than 2.5V in either cases, the relay will be always ON - at all times - I tried this already.
What can I do - to overcome this challenge.
How can I distinguish the 1.98v ( or make it 2V, or anything above 1.8V) bump up to > 3V so that the relay will be OFF.
The SSR relay works in reverse.. when OFF, then it will enable the AC Load.
Thanks and appreciated your quick response.
You can use transistor as a switch, configure it in such a way that, transistor will not turn on on 0.4v
Give the output of the transistor to relay...so when there is more than 0.1 v or more than that ... transistor will turn on and trigger the relay..
Hope this solves your problem.
Dear sir,
My this pir range is maximum 2 MTR , how can I solve this.i want 7 mtrs range. Plz help.
Why we make another circuit to work the built-in device
Try making a mini Tesla coil
Okay.. I'll try
Hello bro ..why my sensor is not working...it gives output automatically without sensing motion
How can I reduce the "delay time" from 5 seconds to even further. The default minimum is 5 seconds , but I want to reduce it.
Appreciate a reply.
It is not possible, because you can not change the circuitry of sensor! Thats why
actually you can but it is a bit more difficult as you need to change the onboard resistor value
I bought 4 PIR motion sensor module but all 4 continuously 3volt out put on output pin when I connect 5volt power supply.
what is wrong where is mistake please help me
Thanking you in advance
Sensor takes time for calibration...turn on and leave the sensor.... don't use more than 5v supply
sensor output will not more than 3 v. you should use 547 transistor to enhance it
Same with me. How to solve this problem
Hi brother, great video. I am working on a project where i am required to Design an Arduino that does the following:
collects movement data and displays it on a computer screen and display a graph of this activity over time. I have no experience with Arduino, any suggestion would be appreciated. my sensor does not seem to be working.
Good video! But all that I know. I came by name, ' how to fix' not how to test :(
How to use to pir sensor
i hated this sensor ... it's drived me crazy !
i did everything in this video and changed modes and try a different pir sensors and all same ..
working some times and turn it self on and off ..!!
please don't use it without it's lense , this lense give a wide angle and filtering the noise and make the sensor more stable..
same problem here
Will the problem solve if I use it with it's lense ?
Why there is no jumper pins and connector on my PIR sensor module?
You can solder wires directly.....you have another varient of PIR so...
@@EngineerWithin What variant is it? In the jumper position there are three dots and MD, L and H is written. Tried to connect wire between MD and L ,and now the sensor is not working anymore. So is it dead? What to do next?
Tried to solder wire but the module gets very hot and no motion detection. Help.
Let it be hot...but once you solder wires....ther shoul be no problem...
@@EngineerWithin But it is not working. I used KTN2222 NPN transistor and 220ohm resistor.
PIR MOTION SENSOR BLINKING PROBLEM.
wait for 1 minute to calibrate it.
hi
999 subs
i got u 2 1k
I am using same Sensor and same circuit, my issue is even though we are in room/ bathroom but light is getting switch off after timer set time, light should be on only till person in room, how to solve this issue?
Jumper is on H only on PIR circuit
You can try changing modes
@@EngineerWithin thanks for your reply, I tried lots of mode combinations, I am using 4.8V DC adopter, do you think 9 V DC may solve my problem?
No, it will damage the sensor
When not working and you fix PIR ?
Its about how to use it correctly
@@EngineerWithin so why you use the wrong caption on your video
not 1 minute bro
Still not working
??
@@EngineerWithin my pir not detect any movement
Fw
If I dont use relay, what effect?