Mindboards

But you can't rely on double to solve this. If you change the problem to R[0][0]=111111; etc., then you are back in the same boat. You will need to understand what the scale of the error value is for your problems and accept that the calculated value is equal to the true value plus some epsilon. In ...

Welcome to the world of Numerical Analysis. Even with code without logic or syntax errors you run into functional errors. With linear algebra problems like solving for the determinant of a matrix on a computer you run into precision problems. Often the same method that works symbolically won't work ...

In the Lego Mindstorms EV3 software you change a program name by choosing the program and then double clicking on its name in the tab above the programming canvas.

It took me a moment to figure this out and I haven't seen this in the documentation.

The battery problem you describe seems to be caused by the battery not being charged enough. The instructions for the rechargeable battery say that it needs to be charged for an hour before the brick will turn on even if the battery is plugged in. I would recommend that you charge the battery all th...

Thanks for sharing the link. The ABS pen is cool and I can see a lot uses for it. It adds freehand in addition to already existing 3D printers. You could even mount it in a modified Lego plotter and make a Lego 3D printer. Or at least a 2.5D printer. The art made by the pen reminds me of the crafts ...

Xander, I too would like to be able to program in python on the EV3. It would also be good for teaching programming. I also like the idea of the community being able to create python libraries for sensors, input filters such as Kolmogorov–Zurbenko, and controllers such as PID, much like the good q...

Reading this: http://www.sparkfun.com/tutorials/218 I would say trying different pull-ups could be good idea. You might consider trying smaller, 10kOhm The general rule for condition 2 is to use a pull-up resistor (R1) that is an order of magnitude (1/10th) less than the input impedance (R2) of the ...

I updated to the Oct 11 test release and that still had the exception error, but August and earlier didn't. I have not done any path changing but my Symbol file library path under Preferences/Editor/Paths was pointing to "C:\Users\{$USER}\AppData\Roaming\JoCar Consulting\BricxCC\3.3\sym" w...

I am running in tabbed window mode. I will test whether switiching makes a difference. I wondered if it could be a deprecated editor setting since you first install the latest full build and then copy files over it from the latest test_release. In the set-up that doesn't have the issue I have done f...

Very cool. Thank you for showing some of the details in the video. The design is very slick, i.e., well done. I also like that it is modular. The modularity makes it a good teaching tool. And makes it easier to see the effects of the transmission and study gear efficiency. I am subscribed to your bl...