Follow me robot

[ledrac]

:confused: Please tell me if it is possible to make a robot follow a signal. For example: the robot would constantly go in the direction of a device on my key chain or in my wallet. Is this possible?

[pacoliketaco]

maybe is you use a couple light sensors that are pointed in different direction and have the robot move towards the greatest light reading, say, from a flashlight.

[Heavy Metal]

oohhh man u gave me great idea though i dont have parts to build.
use only the receiver plug from the ultra sonic sensor and find something else with the same mhz sound or whatever and set that robot to move towards it of course

[ledrac]

What if i used components other than vex. What would be the best way in your opinion to achieve the key chain (or something similar) result? I have searched the internet but cant find an easy solution to this problem.

[pacoliketaco]

try a digital compass and carry around a huge magnet:D

[Heavy Metal]

try a digital compass and carry around a huge magnet:D

i got another idea
ask vex to create a sensor that follows (strong) magnetic activity

[ledrac]

well I guess i asked a question that nobody can answer. I thought i would be inundated with ideas and all i got was sarcasm.

[pacoliketaco]

okay, i wasnt joking when i said a magnetic sensor, which is a digital compass, because that would be one solution:mad:. but there isnt any other wasy i can think of to make a robot follow something it cant see. sure, if you wanted to make this task a bit easier you could have it follow a green light on the back of your shirt with the CMUCam, but that is kinda hard to program. there is no "easy" solution to this problem

http://www.vexforum.com/gallery/showimage.php?i=466&catid=8

[gblake]

well I guess i asked a question that nobody can answer. I thought i would be inundated with ideas and all i got was sarcasm.When you tell me how high "Up" is, I'll answer your question...:)

Your question is poorly worded, and that is one reason why you are getting few replies.

It is dead easy to make a Vex bot follow any thing, if you know where the thing is.

It is big-time hard to implement a sensor that will tell the vex bot, in 3 dimensions, with "good" accuracy and precision, where that "thing" is; and also be able to distinguish (often enough) the thing from other similar objects

You need to start thinking about ways to remotely (no contact) sense the properties/presence of an object, and about ways to convert the sensor(s) measurements into an estimate of the object's location.

Narrow your question down to some specifics and I suspect folks will be able to help you brainstorm a good approach.

Blake

[VEXROCKS]

I'd say you use two ultrasonic sensors and put one on the robot and wire up one and put it on you somewhere

.... only would it have to be pointing at the robot...


Jimmy

[ledrac]

I appreciate the help guys, sorry if i sounded like a jerk. I have learned a lot from this site in a short amount of time.

[dylanjkj19]

I would put very bright IR LEDs on the back of my shirt and use a vex line tracker kit. The line tracker kit senses IR light and since three come in a pack, it may be easier to detect the location of your IR shirt.

PS this may also work with tracking IR from remotes

Hope this helps!:D

[basicxman]

I would try RFID, you would have to adapt your own sensor but with a combination of the iultrasonic sensor I believe you could make a pretty good system.

Or have a tracking system on *you* and then have it send data wirelessly to the robot, then the robot moves based on your path.

[Technic-R-C]

I would personally use a heat seeking sensor that could detect you (human body temperature) and follow you around. THis can be done because there was an article in Robot Magazine about a robot that was programmed to follow a cat.:)

Good luck

Technic-R-C

[BMX670]

that would be amazing!