Motion Detection Lights

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Introduction: Motion Detection Lights

i wanted to make cheap motion sensor lights that work from a standard 220V socket. This is the best that I could achieve, for now)

Step 1: What Will You Need

1. A thin wooden board.you can also use any plastic as long as it's minimum conductive material

2. Double sided adhesive tape to fixate your build on the board

3. A tuperware of symmetrical proportion to the wooden board. I just used what I have lying around. You can always use whatever you like

4. FR4 fiber board pcb which you'll have to saw into the size that suits you, separate it into two areas by grinding away a line in the middle and then solder tin onto its surface

5. 12V 5V fully isolated switching power supply AC-DC module 220V to 12&5 V. Please be careful when handling 220V. You have to solder a plug with 2 wire cord to that module (plugs differs from one country to another)

6. Breadboard, jumper wires, PIR sensor and arduino nano

7. 3 LED rigid (flexible) strip lights

8. Electrical wires ( I used the wires that came with the LED lights)

Step 2: Connection

First you solder the plug cord to the AC-DC module. With a voltmeter make sure the positive and ground are detected on the module and then soldered onto the already divided and covered with tin FR4 fiber boards. Once you have all the voltages assigned, you start soldering the modules accordingly. The arduino nano (power through VIN and GND), the relay and PIR sensor are all powered from the 5 V source transmitted into the breadboard whereas the LED are soldered onto the 12 V source with the positive coming from the relay (see diagram)

Step 3: The Code Can Be Downloaded From Arduino.cc. You Just Have to Modify the Pin Numbers

http://playground.arduino.cc/Code/PIRsense

Step 4: Fully Connected to 220V

after you have everything wired up and soldered. You make a cutout from the tuperware and screw into the piece of wood that you have your project attached to by double sided adhesive tapes and with plastic bolts and nuts for the modules after drilling holes accordingly. You also have to make small cutouts for the wires of the LED and PIR sensor on the side. After doing so, you can put back the lockable lid of the tuperware and you're ready to go

Step 5: Installed in the Bathroom

luckily I have an installed power outlet in the ceiling which made connecting it really easy by just plugging in the plug. Then I passed the wires through the ceiling tiles and just fixated the lights according to my desire. You can also drill holes into the tiles but I'm renting :p

Hope you make it. Really easy and cheap. You can also use an attiny 85 for such a project instead of arduino nano.

Step 6: Version 2.0

I removed the arduino, connected the pir sensor signal to that of the 5 V relay. Fixated the main wire with zip straps and covered the soldered 220v wires with plasti dip. I was able to significantly reduce the size of the project. Too bad I don't have a 3D printer,yet;)

Step 7:

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    40 Comments

    Of course. that's what they are intended for

    Is it switch when we left

    You know, it's quite funny.... this literally gave me nightmares last night. Someone was chasing me with the IR detector coming from this device, I was running for my life so not to get electrocuted. And I think it was @SauHadl :-p

    8 replies

    check ebay and understand what a PIR detector is. too bad about your nightmares

    Just wait till a stray wire pulls the PIR sensor up to 230v, then you'll want to stay away from it, I promise

    by the way what will happen if it reach up to 230v?

    The manufacturer claims that the ac-dc module can handle

    AC85 ~ 265V wide voltage input.

    so what is jodyf1 talking about pir sensor reaching 230 volts..??

    he means that if there is a short from 230V to the pir sensor. the power supply is a commercial product with Isolation and beyond that there is only low voltage so I don't see how that can happen.

    Exactly and it also has temperature protection, overcurrent protection and short circuit full protection. Nonetheless, i agree with the emphasis on safety, especially that this website is accessible to kids

    Too bad about those nightmares but I assure you I'm no freddy kruger. While studying for 13 years to become a surgeon and acquire my Ph.D in medicine, I didn't have time to study for 2 years to become an electrician and limited my knowledge to YouTube videos and literature so please excuse my unprofessional circuit.

    oh by the way now taking JodyF's "advice". I think it is time for you to go back to college and get your engineering degree. I am an electrical engineer and also am a certified electrician and have designed and built dozens of high power and high voltage electrical and power electronics projects. I understand what he is talking about. he is right about safety, however since the project is already in a safe place and out of reach, there is no need to off the deep end.

    4 replies

    I totally agree that safety is mandatory. Thank you for your advice on going back to college but i'll stick to treating humans for now.

    i was obviously just kidding about going back to school.

    I must commend you on your openness about the whole thing. What I worry about is people who ignore advice, believing they know everything. And the last thing this site needs is people making kids think something is safe by saying it's safe even when professionals are saying it's not. I know this isn't a kids' project, but plenty of teenagers give these things a shot, and having just one or two adults saying it's safe is enough to make them think it'll be fine. Kids don't know the difference between good and bad advice.

    On the contrary. I put this project up in order to get criticized by people who understand this topic and such circuits. I really appreciate everybody's feedback and do not recommend children to do it without a knowledgable adult's presence or guidance.

    user

    I plan to do something similar to light up the area by door between my garage and the mud room, but plan to have mine more elaborate, with two zones of lighting ((arage and mud room), ambient light sensors to inhibit turning on lights if its already bright, and more than I can fit in the allowed comment space. I'll have to write my own instructible once I get my project beyond the thought stage. I plan to use a totally enclosed 120vac to 12vdc power supply that simply plugs into a wall outlet, so I don't have to deal with lethal voltages. You ALMOST took this approach by dropping the line voltage to 12vdc and 5vdc, but unfortunately you had to bring the 220vac into the project box to attach to the power supply. It would have been safer if the supply had a standard socket into which you could plug in a standard AC power cable. By the way, to the many posters who suggested a wall wart power supply, I doubt that most such devices could provide enough amps to light the LED's. My planned project will use up to ten 3 watt LED devices, so my PS will be 12v @ 5amps or 60 watts capable. ANyway, thanks for sharing your project and thanks to the posters who had helpful comments.

    Lots of comments about the dangers of line voltage and they should never be ignored. The safest way to "play and learn" is to get a wall wart step down transformer that isolates the line voltage from the user. Duh, a battery is actually the safest way, so we can all speak too fast. The major point to take from all these comments is DO NOT MESS WITH LINE VOLTAGE. You will be exposing yourself to all the voltage and current supplied to your house, at least the branch circuit you are plugged into, and that will kill you in a heartbeat by stopping your heartbeat, and frying you. I lost a neighbor who was fixing his own well pump and accidentally touched a 220 volt main, he died instantly. Electronics is a great hobby, but please be safe. When I was in training to be an Air Conditioning mechanic, I was taught to keep one hand in my pocket, if the unit was powered up. That way the current would not have a path through your arms (and through your heart). It really is that dangerous. Nuff said, I will go back to sleep.

    yes!! jodyf1 only mentions his negative points. please do appreciate ones effort and JUST suggest the blanks one has left.. every one know in which project you had to play with. even i made a project that could be used for severe spy purposes. after all, authors share their ideas. authors should mention precautions but again the person copying would be responsible not the author if he uses it in wrong way or do any illegal act. many projects include lasers which can prove to do a lot damage if directed towards eyes but children use it to play... it does not goes on the inventor if anyone is hurt by even the laser..