Need help to make infrared sensor to work - Page 1
Forum section: electronics / beginners

author: shay3d
author_rank: Newbie
timestamp: November 13, 2018, 10:21:04 am
content: Hello all,It is my first time here, very excited to see such a great forums about electronics for beginners.For the project I did the parts such as laser cut parts and LEDs and resistors and a switch.I have an infrared sensor and I am looking for a way to use it in a project/assignment model, I need to know if it is possible to use the sensor for a set LEDs, and if it can work with 9v batteries, if not how can I connect it using a plug.Any help would be highly appreciated .

author: shay3d
author_rank: Newbie
timestamp: November 13, 2018, 02:50:48 pm
content: Anyone please?

author: capt bullshot
author_rank: Super Contributor
timestamp: November 13, 2018, 03:01:02 pm
content: Obviously, this thing has got three wires. Two of them most probably would be used to connect a power source, the third one would be the ouput. Read the documentation to find out the rated supply voltage and output specification, and the assignment to the wires.In case you don't have a documentation, it's a guessing game.It might work with a supply voltage from 3V to 24V, depending on the target application, and may output any kind of most probably digital (on/off) signal. It might get destroyed if you apply the supply voltage to the wrong wires, or if the supply voltage is too high.

author: glarsson
author_rank: Frequent Contributor
timestamp: November 13, 2018, 03:08:50 pm
content: Two of the wires are blue and brown. In many parts of the world these colors are used for neutral and live. The thing might expect 240V AC.

author: shay3d
author_rank: Newbie
timestamp: November 13, 2018, 04:44:40 pm
content: Thank you very much '' capt bullshot'', I have the document but its kinda confusing as I do not understand to which one I must connect the battery and which ones are for LEDs. I have attached them here , also switched the + and - of the battery to see if its working but nothing happened same for LEDs, nothing again.(attached)

author: shay3d
author_rank: Newbie
timestamp: November 13, 2018, 04:53:04 pm
content: Quote from: glarsson on November 13, 2018, 03:08:50 pmThanks a lot, I never used 240v AC, do I need some sort of an adapter ?

author: capt bullshot
author_rank: Super Contributor
timestamp: November 13, 2018, 07:19:45 pm
content: It's clearly intended to run off the mains voltage. A battery won't work.You'll have to connect it as shown in the documents, Neutral to blue wire, Live to brown wire and your load from red wire to Neutral (blue wire). Use a mains cord with a proper plug on one end and open wires at the other end. A simple (mains voltage) light bulb (shouldn't matter if incandescent, LED or CFL type) will do the job for testing.If you want to run battery operated LEDs from this device, connect a wall wart or power brick to the output, the device will turn it on and off at the mains AC side, and connect your LED to the power supplies output.Be careful if you don't have experience with mains voltage.

author: shay3d
author_rank: Newbie
timestamp: November 15, 2018, 10:05:41 am
content: capt bullshot Thank you very much, will LEDs work with that kinda voltage ? I mean if the input is 110-220, whats the output ?Have you had time to check the photos please?Thanks

author: capt bullshot
author_rank: Super Contributor
timestamp: November 15, 2018, 11:26:25 am
content: The output is the same as the input.So this thing is working on a 240V AC input and ouputs nothing or 240V AC.You cannot directly connect an LED to 240V AC, you'll have to use e.g. an LED light bulb rated for 240V AC or some kind of power supply that has 240V AC input and appropriate output for your LED.

author: shay3d
author_rank: Newbie
timestamp: November 15, 2018, 03:54:28 pm
content: Thank you very much, so I decided not to use that and get a 2A one from ebay,Thanks everybody this thread is now closed