Replies to This Discussion

3D RoboticsPermalink Reply by Chris Anderson on July 6, 2009 at 12:13pm

I don't know what kind of RF sensor would be able to do that. I doubt ArduPilot can help you until you figure out your sensing.

• ▶ Reply

Permalink Reply by R. Henderson on July 6, 2009 at 2:37pm

I was going to use telemetry to find out the position of the transmitter and then use ardupilot to control the motors in order to get to the transmitter

• ▶ Reply

Permalink Reply by Reto on July 6, 2009 at 12:32pm

Maybe with 2 GPS and some RF modems, but for sure the 1 ft distance won't be in! And "following" in the strict sense won't either.
Another way could be to use the RSSI signal of two Xbees (proportional to distance) to compute the distance, and GPS for tracking.
This remembers me the guy who wanted to have such system to be followed by a chopper! The RC car is definitely less dangerous!

• ▶ Reply

Permalink Reply by William Premerlani on July 6, 2009 at 6:17pm

Bruno,

One idea for the sensor is a combination of ultrasound and RF, called the "cricket location support system", developed at MIT.

The cricket sensors are available commercially from Crossbow Technology.

Bill

• ▶ Reply

Permalink Reply by R. Henderson on July 6, 2009 at 8:25pm

BTW Thank you yery much for the suggestion though.

• ▶ Reply

Permalink Reply by R. Henderson on July 6, 2009 at 8:39pm

Thanks very much! But because the cricket system only works in a big space full of "beacons", the RC car is limited to that space. Optimally the RC car should follow me unhindered through most environments.
Thanks anyway Bill

• ▶ Reply

Permalink Reply by Howard Gordon on July 7, 2009 at 9:01am

You might have better luck using the BlimpDuino controller - you could locate a moving IR beacon and use the ultrasonic sensor for distance from the obstacle (you).

• ▶ Reply

Permalink Reply by R. Henderson on July 7, 2009 at 2:17pm

Thanks for the suggestion, Howard. From what I've seen the BlimpDuino looks very promising. I can then use the envelope for other projects along with the motors and props. I think this is what I was looking for. Thanks

• ▶ Reply

Permalink Reply by R. Henderson on August 9, 2009 at 9:29am

Thanks everyone for their replies and after thinking about it I've realized that I now need to know only two things:

1. Can I disable the vectoring servo and have Blimpduino work?

2. Can I use a larger size motor for the Blimpduino and still have it work?

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on August 9, 2009 at 10:03am

1) Blimpduino will not hold altitude without the vectoring servo

2) You can add larger motors, but why? These are more than sufficient for this size blimp (it's very speedy as is--indeed we've cut the power output to the motors because they're too powerful for this envelope)

• ▶ Reply

ModeratorPermalink Reply by Sgt Ric on August 9, 2009 at 10:59am

I think he is still talking about using it for his car, and adapting the drive system.

• ▶ Reply

3D RoboticsPermalink Reply by Chris Anderson on August 9, 2009 at 12:19pm

Ah. I don't think Blimpduino is a good choice for him. He should use a standard Arduino board with a Motor Shield and write his own code.

• ▶ Reply

• ‹ Previous
• 1
• 2
• Next ›
• Page