Let's Make Robots!

Follow You...

I want to make a robot that follows you but it is stationary in position ... it can only rotate on it's axel to follow you... I figured a servo can be used to make the 360 degrees turn but then i read it can only get until 200 degrees... As for the the sensor I search and found that i can use a PIR sensor(motion sensor) or a color sensor (which is more preferred?)... I'm am less than clueless on how to make use of the sensor so that the robot will follow you.. The motion sensor will sense you moving but i don't know how to make it follow you

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I just bought a motion sensor to test out how to use it .. 

I search google on how to test it out is the transistor necessary?

I just wanna try making an LED light up when i pass the sensor...

The sensor i bough is like thisPIR sensor

Can you use an Atmega328 w/ an arduino board instead of a PIC on the start here robot?

Yes you can...

As you only want it to follow around a 360° circle you could make a simple beam bot with no processor. Just use two range sensors with analog outputs.

I"ve also though of this way... but i haven't figured out how to make the motor respond to the sensor without the processor...

I though about the possibility of not using microprocessor for the whole day i came up with a circuit that will if output is 1 will turn the motor clockwise if 0 then it will turn counterclockwise the problem is it won't stop xDDD

...that it will stop. Its as easy as pulling out the batteries that are connected to stop the robot. We don't use batteries of high voltage (>40V) which may electrocute you. Most batts are under 12V so all you need to do to stop the robot is to pull out the batteries.

Solarbotics maintains a wiki that has plans for several photopheliac/photophobic heads based on the Tilden/Ritger modified H-bridges. They won't follow motion so much as react to shadows falling on them so you pretty much have to have a flat uniform source of light falling on the sensors to get a head to work the way you want and then to be close enough to he unit to cast a shadow on it. In a room with windows it would be pretty erratic.

thanks...

 

I guess I'll start off at first learning to use the motion sensors... to get a more familiar feel for it ....
Then I'll look for a continous rotation servos...
Do i need a microcontroller to connect them to be able to follow the motion?

If you want to use a servo and PIR sensors then the short answer is yes.