[FTC]: Programming Issue "FTC Crab"

[OctagonMaster]

I currently have a student programmer that loves the word cant.

We are currently trying to get a basic test bed to move in a crab style. I have three motor controllers and one Servo controller, Motors 1,2,3,4 (RF, LF, RR, LR) are connected to the first two motor controllers and the last motor that controls our chain for the movement of our modules (left to right) is connected to the last motor controller.

The last motor has an encoder and a sprocket using a lego touch sensor (port 2) to reference a zero point (all wheels facing forward). We are using Labview and would like try and make this work, however with a programmer that says it cant be done, i know of hundereds on here that know it can..

[Andrew Remmers]

I can't answer any programming questions, but I have been waiting for someone to actually take this on I'd like to see how it works out for you

- Andrew

[gotrobot?]

Maybe this thread can help.

http://www.chiefdelphi.com/forums/sh...ad.php?t=74262

[OctagonMaster]

Ive figured out how to cotnrol all motors at one, the issue is how to set the first controller to control the movement. Reading the controller is getting a little be confusing anyone got ideas

[PAR_WIG1350]

Originally Posted by OctagonMaster

Ive figured out how to cotnrol all motors at one, the issue is how to set the first controller to control the movement. Reading the controller is getting a little be confusing anyone got ideas

Can you elaborate on what you are trying to 'read' from the controller. I don't really know labview, but in RobotC there is a way to automatically generate the code that initializes the motors and controllers and from there you simply call functions to set values for speed and to read encoders.

[Enddragon7]

I could post a program I made for a similar drive if you want it. I made over the summer and there's no one to help me so I'll be more than glad to help your team with this.

[OctagonMaster]

we actually used our crab in two competitions and it worked well in the qualifier and was an obvious hit to the crowd as our mentors tested it on the field while the drivers meeting was going. It was awesome, To see all the drivers head spin when the crab worked. We are now looking to upgrade the hardware and learn more programming with other hardware to make it more stable in quick moves. The power is great but turns are slow and partially dangerous to our wiring. We will post a pic and the code used, any help in trying to get it down to a science would be helpful.