LEGO EV3 Radar System MOC
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- čas přidán 23. 09. 2015
- The LEGO Radar System (LRS) is based on reflection of ultrasonic waves and infrared light and is technically not seen as a radar, which operates based on reflection of electromagnetic waves.
In its operations the LRS scans an area of 160 degree at a range of 1.50 m. For in-house operation this is regarded as sufficient, however the range can be increased up to the max of the Ultrasonic Sensor at 2.55 m. The LRS uses a combination of ultrasonic and infrared light reflection to deliver best results on a wide range of surfaces, including walls, carpets, curtains, windows …
A program download is available at: drive.google.com/open?id=1Lmr...
The LRS is built with LEGO bricks and programed with the LEGO MINDSTORMS EV3 Software, with the exception of the cables, which are from Mindsensors due to their higher flexibility. - Věda a technologie
Brilliant.....thanks for sharing
Nice!
I go do that and put in the door of my bedroom, btw that’s really cool
You deserve more subscribers and views!
I don't see why? this is a very unoriginal idea.
this seems more like a combination of active sonar and Lidar.
pretty much
can you tell me more about increasing the range of the infrared sensor?
Cuz i have a car that can drive remotly, but if it is further than about 2.50 meters, it almost dont react anymore
Infrared isn't very reliable at long distances, so you just have to follow the car around
I would love to check out the program for this moc Very nice.
The tower and mechanics are shown in the two videos and there is a program download link in the description for your convenience. Have fun!
Wow you were able to block the noise fro: the supersonic sensor only mics can pick up not the human ear
I'm gonna call this impossibly simple, since know what's happening and how it works but don't know how to replicate the code
it's cool tho, i like it :D
thank you - you don't have to replicate the code, in the description is a download link for the EV3 software
@@thoroughfareproduction yeah I saw it but sadly it don't have the IR sensor, but I was just saying that it would be really hard to replicate it
can you teach me to program with the ev3 software?
I want to make a mobile version or a hand held
The tutorial provides some insights in main functions of the LEGO Radar System. The rest is yours to make it run!
czcams.com/video/43EXjEMEAfw/video.html
Is it possible to make a tracking mechanism using this concept in a vehicle?
The Lego Radar System is further used in ODEsin alpha (czcams.com/video/tFDOhl7Kh00/video.html) to create an accurate representation of the current (static) environment. However the self-driving EV3 robot is moving while tracking and mapping, that might be a first step for your tank. The description is given in section 4) Lego Radar System (LRS) and Mapping of the ODEsin alpha Tutorial (czcams.com/video/i02HcqFCFPs/video.htmlm).
For the second step you might search the internet for ‘radar tracking algorithm’ and ‘kalman filter’.
I wish I had mindstorm
Why did you use both the IR sensor and the Ultrasonic sensor?
Wasn't the ultrasonic just enough?
The LRS uses a combination of ultrasonic and infrared light reflection to deliver best results on a wide range of surfaces, including walls, carpets, curtains, windows. But you are right, if you have to pick only one I would go for the ultrasonic, its just more precise.
I originally built the LRS to learn about the sensors and later on deployed modified versions in the vehicles.
can you give us the program an build constructions
The tutorial provides some insights in main functions of the LEGO Radar System (czcams.com/video/43EXjEMEAfw/video.html). In the description is also a program downlaod available. The rest is yours to make it run!
I constructed one but the radar seems to turn more than 1 rotation, help, please?
Each step of the LRS is set at 10 degrees; these are fixed and you can see it in the MyBlock LRS_Variables [180-(a+1)*10]. Depending on the construction the motor has to make a number of turns. In my construction the gear ratio is 1:8 for the worm gear and 8:24 for the turntable resuling in an overall gear ratio of 1:24. Hence for one step the motor has to turn 10 degrees x 24 = 240 degrees or 0.667 x 360 degrees. In the MyBlock LRS_TurnRadar the number of turns [0.667] for a 10 degree shift can be set (altered to adjust to your construction / gear ratio). Hope that helps.
Hi, why I only can view these files, I cannot download them. Could you please help?
Thank you for your interest - I have just checked the download function and it works properly on my side. In my view the link opens the file list and on the top right corner I find the symbol for the download - hope it works also on your side.
how did you get the dot's to change on the display? how is that programmed?
The coordination of each dot is stored in an array. The dot on the screen is simply erased by plotting a white dot at the same place prior to make an update.
There is a program download link in the description for your convenience.
Have fun!
@@thoroughfareproduction Thanks for the reply.
I don't have the minestorms software currently installed but I was wondering what the purpose of 2 sensors was?
The LRS uses a combination of ultrasonic and infrared light reflection to deliver best results on a wide range of surfaces, including walls, carpets, curtains, windows. With only one sensor available I would go for the ultrasonic, its just more precise in most of the situations. I originally built the LRS to learn about the sensors and later on deployed modified versions in the vehicles.
Where did you buy the wires ?
the wires are from www.mindsensors.com
Столкнулись с проблемой код не подход к версии, он сохранëн другим файлом, можете обновить? За раннее большое спасибо!
Alas, the LEGO MINDSTORMS EV3 Software is no longer available / supported by LEGO (just checked their website) - I do not have an update code but a short tutorial about the software concept czcams.com/video/43EXjEMEAfw/video.html
How did you get that display?
This is fairly well described in the EV3 help procedures. First select Tools - Image Editor. The Image Editors allows to create images (from camera pictures) and text to display on the EV3, alas only monochrome. The file is converted to *.rgf, the EV3 format. It can then be included in the program using the Action Block - Display.
Oh cool, Thanks!
is the program in ev3g or not?
yes, the program is written in EV3g
That,s so funny hahahahahaha
IIRC - the mindstorm ultrasonic sensor range is about 18 to 24 inches - so its a tad near sighted … more like Mr Magoo….
Indeed, it is short range only. But with some math it is quiet precise for up to one meter
czcams.com/video/kAh2cYn_seI/video.html
if ultrasonic sensor is not used will it work please reply me
Yes, it works without the ultrasonic sensor. However just using the infrared sensor makes it less precise and the program must be adapted (remove the ultrasonic sensor)
@@thoroughfareproduction very thanks
Please Provide buy link . I Request you
There is a tutorial about the LRS --> czcams.com/video/43EXjEMEAfw/video.html
The tower and mechanics are shown in this video and the above refernced tutorial. It includes a download link for the program in the description. Have fun!
Haha 420 subs
If you have multiple radar units that linked their data together - you can develop a phased Array radar...
The LEGO EV3 Rapid Object Tracer (ROT) is a ground surveillance and tracking system based on two radar systems:
czcams.com/video/KoCcKGbvm-I/video.html
inb4 lego missile defense
coming soon!
here we go! an updated Radar System for object detetction and tracking --> czcams.com/video/uzBoo_1Z8JM/video.html
an updated Radar System for 360 degree threat detection in 3D --> czcams.com/video/XbgHdGPI9vQ/video.html