7mb/s, Will it be an Issue?

[yash101]

I did a bandwidth test and found that streaming from two cameras with 38% compression, 640, 480, 600 KB/s were following through the network, which equals to 4.8 mbps. That means that the 7 mbps might a problem of you are using two cameras. We used an M1013 and M1011 for this test

[billbo911]

Originally Posted by magnets

...... having an alliance partner using two cameras WILL lower your availible bandwidth

I'm going to throw a blanket statement RED Flag on this one.

Originally Posted by yash101

I did a bandwidth test and found that streaming from two cameras with 38% compression, 640, 480, 600 KB/s were following through the network, which equals to 4.8 mbps. That means that the 7 mbps might a problem of you are using two cameras. We used an M1013 and M1011 for this test

And, sorry yash101, you get one too.

My point is not that you are wrong, but you didn't include any qualifiers. If you limit your comments to only one configuration, image processing on the DS, then your comments are fair. That said, you may want to consider alternatives.

My example is going to be my own team. Two cameras this year. One USB, processed on-board with a PCDuino. (BTW, the total cost for this set-up is almost half the cost of an Axis camera alone.) The other is a Axis 603, again processed on-board by the cRio, but for only one or two 320X240 frames at 30% compression, then turned off.

Essentially 0Mb/s bandwidth used with two cameras. There are ways to get around the 7Mb/s BW limits w/o disrupting the WiFi network.

[yash101]

Mr. Bill, I was pointing out a typical situation, where a robot will have one or two cameras, with the feed going directly to the DS, and no processing would be happening. Certainly, in your situation, the bandwidth would be low, but not every team processes images onboard. We won't be because it is now to late to order an onboard PC like the PandaBoard. BTW, how long does the PandaBoard typically take to ship?

[billbo911]

Originally Posted by yash101

Mr. Bill, I was pointing out a typical situation, where a robot will have one or two cameras, with the feed going directly to the DS, and no processing would be happening.....

Understood. The only reason I worded my comments like I did was that the two references I was "calling a red flag" on, didn't specify the configuration, it was only assumed.
Basing your comments on the configuration you just spelled out makes your comments 100% legit.
Please understand, no offence was intended.

Originally Posted by yash101

Certainly, in your situation, the bandwidth would be low, but not every team processes images onboard. We won't be because it is now to late to order an onboard PC like the PandaBoard. BTW, how long does the PandaBoard typically take to ship?

Sorry, never used a PandaBoard, I can't answer that one.
We are using a PCDuino sourced from SparkFun. Delivery is usually within 5 days.

Based on withholding amounts, I believe you should be able to order one now, develop your code off the robot, and bring it to the first practice day of your first comp. and install it there. That would buy you at least an extra week or so, at minimum. Please check me on the rules here, I don't want to mislead anyone.