Questions tagged [robotc]
ROBOTC (trademarked as ROBOTC and frequently spelled RobotC) is an Integrated development environment targeted towards students that is used to program and control LEGO NXT, VEX, RCX, and Arduino robots using a programming language based on the C programming language. Not to be confused with "Robotic". Please refrain from using this tag for general robotics questions.
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Strange behavior from VEX claw assembly using servo command
I noticed something odd when I tried to loop a claw so it would just open and close (eventually I want to have it just open when the ultrasonic sensor detects something in front of it and close a ...
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Using RobotC, trying to find why code seems to loop oddly
I am writing code in RobotC, (natural language PLTW) and what I want is this robot to go forward, then if it "sees" an obstacle, to reverse, turning on an LED (sort of an indicator light) until the ...
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What is the correct algorithm name for this “Shortest Path Maze Solver”?
What is the correct algorithm name for this Shortest Path Maze Solver?
The algorithm works by completing the maze and at each turn storing each of the turns in an array until the maze once the maze ...
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Tetrix Prizm and ROBOTC
I am currently trying to find if its possible to program a Tetrix Prizm motor controller with ROBOTC? Because I have an EV3 brain connected with the Prizm to a robot assembly with two motors, and I ...
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How do I create a broken line follower? [RobotC] [Legomindstorm] [Ev3]
Trying to create an algorithm/code in order to get my robot to follow a track which it currently can do, using a color sensor and following the inside edge. So I'm wondering how to transition to the ...
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80 views
RobotC startMotor command useless?
I learned recently that robotc has a command called startMotor. it has two parameters, a motor and a speed, and it sets the motor to the speed.
But the same thing can be accomplished in one line like ...
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Maths in Robotics [closed]
I'm interested in Robotics but not very skilled in Maths.
Since I always come across some very intense looking mathematical formulae in robotic reports, books etc I just wonder what branch of ...
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1answer
470 views
RobotC Code Malfuncion (VEX Robotics Clawbot)
I have a standard VEX Clawbot, which I've been trying to make go straight for some time.
I've been following this guide:
http://www.education.rec.ri.cmu.edu/products/cortex_video_trainer/lesson/3-...
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Robot Veering to the Left
I'm currently programming in RobotC, for a Vex 2.0 Cortex. I'm using encoders to make my robot go straight.
This is my code:
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1answer
1k views
How can I calculate Center of mass for each link of Robot?
I want to calculate 'r'
I know , and the Position of(X, Z)
But I don't know how to apply it in this robot.
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Is there any robot stability control equation that describes the relation between velocity of the robot and its orientation?
Let’s assume at time t a moving robot (e.g. PIONEER 3-DX) changes it’s steering angle by $25^{\circ}$. Obviously, in order to maintain stability and avoid overturning, the robot must reduce its ...
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Is there an online RobotC IDE?
I'm on a Linux chromebook, and am using a Vex robot, and am wondering if there is an online IDE for RobotC that will run my computer?
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1answer
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Euler-Lagrange systems, autonomous or nonautonomous?
I was reading an article on Euler-Lagrange systems. It is stated there that since M(q) and C(q,q') depend on q, it is not autonomous. As a result, we cannot use LaSalle's theorem. I have uploaded that ...
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338 views
VEX Cortex Motor Speeds up under load
I am trying to get my robot to drive straight and am having trouble. I find that when running the motors with no load they run fine. If I put a load on one motor it accelerates. The other performs ...
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137 views
Use MATLAB Compiler SDK generated package in KUKA Sunrise.Workbench
The MATLAB Compiler SDK allows to create a wrapper for a MATLAB function which can be accessed by Java software. Based on my understanding, KUKA's Sunrise.Workbench IDE uses most of the standard Java ...
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1answer
236 views
How can I switch between Autonomous mode and usercontrol?
I want to switch from usercontrol to autonomous. When I have the program running for 120 seconds, how come it wont automatically switch in autonomous mode? Thanks!
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230 views
What is the RobotC type for motors?
I'm trying to create a function that allows me to more easily start a motor, but I'm running into a problem, I don't know the type to use for the motorName argument....
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What is the best software/package to draw the robot manipulator and indicate DH parameters and different axes?
I'm wondering about good software/package to draw the robot manipulator and indicate DH parameters and different axes?
Any suggestions!
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2answers
157 views
Create Artificial Integelent Robot Ability to communicate with Computer : Which language i should use [closed]
I know some languages like PHP, C/C++ and Java but I'm not expert in these languages. I want to create an Artificial Intelligent Robot that can do these Task;
able to communicate with Computer (USB, ...
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1answer
235 views
Can I use QT to communicate with a Lego NXT robot?
QT has native bluetooth support, but can it be used to communicate with the Lego NXT robot?
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3answers
750 views
Robotc color sensor error
I am trying to write a simple program where the robot(Lego NXT2) will follow a blue line.
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1answer
788 views
Matlab for moving a robot towards the detected block
the matlab code is used to detect red colored object, but i want to control a bot to move towards the detected object. just need a simple algorithm or idea, controlling the servo i will be able to do ...
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1answer
173 views
Performance/memory considerations for pathfinding lookup tables on RobotC for a small set of paths
I'm writing a C code generator geared toward RobotC and complex tasks for an FTC team, and was wondering about some performance and storage concerns:
How much memory is available for my program's ...
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1answer
472 views
function of PIDControl #pragma config() directive in robotC
I am trying to sync motors on a VEX Cortex based robot and have had mixed success using the encoders with position control. I noticed that the motor setup directive
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1answer
288 views
Robotics StackExchange vs ROS Answer [closed]
Robotics Stackexchange vs. ROS Answer:
What is better and for what purpose?
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1answer
366 views
Powering down servos completely in RobotC+Tetrix
For a certain robotic application (actually for the FTC challenge this year) our team is performing an operation where a servo-driven arm could potentially be forced into an unknown position. We are ...
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2answers
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Confused about the variables in RobotC?
I'm trying to program advanced functions in RobotC but I'm not too sure I'm doing it right. I want to specify the motor port I'm using, but I assigned names to all the motors. Funny thing though, they ...
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3k views
Correct way to use Subsumption Architecture with Robot C
I've been doing a lot of reading lately about Subsumption Architecture and there are a few different ways people seem to advocate.
For instance some people use a global "flag" variable to have a ...
