How to build a robot using PING, ultrasonic sensor, servo motor and PIC?

[renzai0702]

hye guys..:
i'm really new here..i'm looking 4 help.can anybody giv me suggestion on how to build a robot using PING))) ultrasonic sensor, servo motor and PIC - 16F84A. this is 4 my project assignment.help me plss...

 

[andre_luis]

obstacle robot

renzai0702,

You have to use timer module together with edge interrupt pin, to acount time between sent pulse and received pulse, and such distance is proportional to sound air speed ( ~340m/sec )

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[renzai0702]

Re: obstacle robot

andre_teprom:
what is timer module together with edge interrupt pin?
can u giv me example for the circuit diagram to create dis robot..
i'm really2 new in dis kind of project..

 

[andre_luis]

Re: obstacle robot

renzai0702,

The timer need to use the greater input clock source possible. When you send a train-pulse on transmiter cell, the timer is cleared and, started. So, now you enable interrupt pin ( like RB0 ), and if a pulse is detected, you get the timer result, and calculate distance.

There are several examples on the Web. Take a search using key : ultrasonic range finder circuit.

Microchip have an application note AN597.


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[renzai0702]

Re: obstacle robot

is it the same using ultrasonic sensor for range finder and for avoiding obstacle..?

 

[BlackOps]

Re: obstacle robot

yes.

here is the link to the Ultrasonic Range Meter using PIC.
https://www.hobby-elec.org/e_pic6_6.htm
and showing range on LEDs. you can add drive circuit and motors to the same microcontroller on this circuit. and program it.

 

[renzai0702]

Re: obstacle robot

can anyone help me find circuit for ultrasonic range using PIC16F84..
cause i couldn't fin any of it..

 

[alajely]

obstacle robot

i did something like this with IR sensors!

 

[crowinu]

Re: obstacle robot

can anyone help me find circuit for ultrasonic range using PIC16F84..
cause i couldn't fin any of it..

why are you using 16f84 ?

 

[inifinitrix]

obstacle robot

what sensor that i should use for underwater application for detecting obstacle? and measure the distance..thanx in advance..

 

[blueroomelectronics]

Re: obstacle robot

what sensor that i should use for underwater application for detecting obstacle? and measure the distance..thanx in advance..

Sonar.

 

[saas123qa]

Re: obstacle robot

for this application pic16f88 is better than pic16f84

 

[kender]

Re: obstacle robot

what sensor that i should use for underwater application for detecting obstacle? and measure the distance..thanx in advance..

Sonar.

Easy to say. It's easy to utter this word.

 

[rohitlucky]

Re: obstacle robot

HI, I CAN HELP U TO MAKE THIS.I WILL PROVIDE U FULL DOCUMENTATION ON THAT.

THINGS THAT U SHOULD KNOW
1) ABOUT PIC16F628 OR PIC16F84 (I LIKE PIC16F628)
2) ABOUT REFLECTIVE IR SENSORS OR ULTRASONIC RX AND TX
3) GEARED DC MOTORS
4) ABOUT PROGRAMMING LANGUAGES FOR PIC(PREFFERED ASM)

I U DONT KNOW ABOUT ANY ONE OF THEASE THINGS THEN PLEASE INFORM ME SO THAT I CAN HELP U.

ROHIT

 

[the_balistic]

Re: obstacle robot

Hii,

How about you try this software first MOBOTSIM. This software simulate Obstacel

Robot. The robot has 12 sensors. Use basic languange(SAX BAsic) and very easy to

learn.

**broken link removed**

 

[gamersat678]

obstacle robot

rohitlucky and the_balistic the OP probably has moved on by now (2007).