Lesson 72: Obstacle detection using Laser Transmitter and receiver | Arduino Step By Step Course

[@polkadotmicrochip]

Nice to see these on little module boards. I use an old laser pointer and a phototransistor on my chicken coop to keep the automatic door from squashing my birds.

[@robojax]

Interesting application.

[@xxjonathan117]

sunlight affect?

[@BakirHaitham]

hello my laser isnt working and i dont know why could anyone help me i followed the tutorial exactly it just blinks a couple of times then stops idk how to fix it

[@chennairobotist]

try interchanging the polarity. In my case I had the S and - mis-written on the PCB. I just inverted my connections, it worked..

[@farhadfarhadi786]

Hi I can't find iso203 sensor, can I use pd438c sensor? how can I?

[@electronic7979]

👍

[@mattjacobs9545]

I have these lasers setup for a basketball arcade game. They work great but if a ball hits the basket. It registers a score. Any ideas to make these less sensitive?

[@christopherrumford]

Great video Would you be able make a touch screen screen frame/overlay using this method.

[@matiasacabral]

Hi, the problem with this setup is that when the laser is interrupted the input in the arduino is left floating, which means that you don't get a deterministic low signal.

[@spidey4fun]

Does the laser need to be completely obstructed to trigger the sensor? Could a 0.05mm copper wire be detected?

[@robojax]

that is tough to know. I have not tested. Let's see if anyone else has done it. Try it.

[@spidey4fun]

@@robojax Yes. I might have to try.

[@الخطاطالعراقي-د5و]

great effort worthy of admiration...thank you

[@elliottsancrant531]

Hey would it be possible to use this system to tell 2 6V DC motors to rotate whenever the signal is interrupted?

[@robojax]

Yes very easily. First learn how to use the the “if” statement to take action. Perhaps learn it from this video ESP32 Project 24 - Measuring Soil Mositure for Irrigation | SunFounder's ESP32 IoT Learnig kit kzbin.info/www/bejne/g4iQaJRrj5V8ipI and the learn how to use the a relay. I have tones of videos on relays. Search my channel.

[@fabiantrz]

Dumb question but is the buzzer passive or active. I want to buy it but I don't know which one to pick. Can you tell me about that? Please

[@robojax]

Not question is dumb question. This called active buzzer.

[@AnsarAllah40]

ممكن الكود حق المشروع

[@robojax]

The link to the code is under the video

[@robojax]

شفر موجود تحت الفیدیو فی موقع توضیحات

[@madgreak302]

What is the maximum distance between the transmitter and the receiver?

[@robojax]

as for as you can see and aim it. there is no limit. with naked eyes, you can't see the receiver to aim in a distance longer than 10 meters.

[@EnderBros2022]

Nice ahmd

[@randysonnicksen9475]

I have purchase the KY-008 laser with the associated sensor board. For my project I only need the 3 pin sensor but I'm unable to identify it, and I can't seem to find any references to it on all the sites that are selling it. Does anyone know the Mfr and Part Number of the detector which inserts into the 3 pin socket? Thanks!!!

[@robojax]

you can identify it by watching the video. it is veyr simple. it is + and GND and output and I have shown it.

[@randysonnicksen9475]

@@robojax You mis-understand. I'm looking for the part number of the receiver only. Just the detector that has the tiny lens bump on it. I want to purchase it separately without the board that it mounts on.

[@robojax]

it is already cheap. just get the with the bord and discard the boad. when I was making this video, I tried to find so I could includ it in the video and even today I tried but could not find it.

[@anbu9611]

Hi what's the name of the laser detector please

[@robojax]

Hi, you just answer it. I t is receiver or detector and I just added the purchase link I the description below the video.

[@anbu9611]

@@robojax yh like i mean the laser’s name is KY-008 but you didnt mention the name of the detection

[@robojax]

that is the name "detector" or "sensor" it has no model or anything. Just follow the links you will see it

[@lllAstridddlll]

👍