problems with ping

flameofrage

Hi i have a ping sensor sonar thing and im trying to incorporate it into my boebot which already has the ir sensors on it and im looking around the site and not getting any useful information as to should i leave the sensors on there or just have the ping thing alone and have a program for roaming around with the ping so please HELPPPP!

SRLM

It's your choice. The more sensors that you have, the better your robot's perception of the world can be. But if you have too many, then it becomes a hassle to try and integrate everything. It's your choice, and that's the fun of robotics: you get to design what you want.

Mike Green

Ultrasound and IR also have different characteristics and objects have different reflectivities to each. Some things just look nearly invisible to ultrasound and some to IR. By having several different kinds of sensors, you increase your chances of detecting an obstacle. Also, ultrasound gives you a distance measurement while IR usually just gives you a presence / absence indication at different ranges (although there are some IR sensors which give you a direct distance measurement).

Chris Savage

The Roaming with PING))) demo on our website uses both the IR and the PING))) for roaming. You can find it on the PING))) product page. Take care.

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Chris Savage
Parallax Engineering

flameofrage

thanks your help but the sample code only has the code included with the mounting bracket and the ir detectors used for detecting walls surrounding the boebot and i dont have the mounting bracket which i dont have see my problem? if you could help me extract these pieces of the code then it would b very helpful

Mike Green

The mounting bracket and the included servo just make the navigation easier. You can also move the entire BoeBot when using the PING))) just like what's done when using the IR detectors for navigation. Have you gotten the sample code to work that is in the "Robotics with the BoeBot" tutorial, the one that uses the IR detectors for roaming?

In the Roaming with PING example, you just need to turn the whole BoeBot through the sweep, making sure that it mostly ends up facing the same direction it started in before the sweep. The rest of the code should be pretty much the same. If you don't understand how to do that, you might start with the Robotics with the BoeBot tutorial and work through the examples so you understand about BoeBot movement before you try to do the navigation.

Chris Savage

Excellent idea Mike...if you don't have the mounting bracket...simply turn the robot. Each subroutine could be easily modified to do this.

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Chris Savage
Parallax Engineering