Using and Coding an ultrasonic sensor

[seanwitte]

Originally Posted by Adam Y.

Actually they would...... You would just have to build them. Most of the parts are rather quite harmless.http://www.robot-electronics.co.uk/htm/srf04tech.htm
Also the infared emitters have a maximum distance of three feet. The ultrasonic emitter has a rating of 3 meters. Infared sensors don't detect anything transparent to infared light. Ultrasonic sensors have a hard time detecting fuzzy things. Both sensors have a hard time detecting things at a steep angle due to the fact that the signal gets bounced in the wrong direction. You can ask me anything about sensors. Im pretty knowledgable about them.

Sharp infrared proxity sensor, part number GP2Y0A02YK, measures distances between 8" and 60". Its still half the range of the ultrasonic sensor but not terrible. The smaller one, part number GPD2D12 measures 3" to 12". They can be wired directly to a 3-pin header on the RC since they run on 5V and return an analog voltage proportional to the distance. They are really easy to use. The only source I've seen for the JST connectors is www.acroname.com. Digi-key sells the sensors as well.