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I have had an old Vex PIC system for several years now along with the old orange style of programming hardware kit. However, I have never been successful in getting programming software to work due to issues with licenses. When I saw there was a free version of RobotC 3.63 for Vex PIC available, I thought I would finally be able to put the sensory hardware I have to use. The installation worked on Windows 10 without any problems. However, I could not establish a link with the PIC controller...
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Problems connecting PIC to RobotC
in ROBOTC for CORTEX & PIC
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B.E.M. |
0 |
6107 |
Sat Oct 03, 2015 2:30 pm
B.E.M.
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The documentation for the rand() function (RobotC 4.X for LEGO Documentation > General C Programming > Math) here: says: A typical way to generate pseudo-random numbers in a determined range using rand is to use the modulo of the returned value by the range span and add the initial value of the range: ( value % 100 ) is in the range 0 to 99 ( value % 100 + 1 ) is in the range 1 to 100 ( value % 30 + 1985 ) is in the range 1985 to 2014 and provides the sample code: The rand() function does...
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rand() function documentation, RobotC 4.X
in Issues and Bugs
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jaiclinm |
0 |
8591 |
Thu Oct 01, 2015 10:38 pm
jaiclinm
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Hello all, I'm new to RobotC and robotics in general, but I've done a little bit of programming in the past for fun. Anyways, I don't like the restrictions for ordinary arrays, so I tried making my own linked list data structure. The problem is, even when I only make one node, it corrupts the firmware apparently because it makes the program crash and I can only seem to fix it by re-downloading the firmware in the Robot program. Why is this happening? Is it my code? (I'm not a very good...
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Downloading source to robot corrupts firmware?
in ROBOTC for CORTEX & PIC
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tyridge77 |
0 |
5667 |
Thu Oct 01, 2015 10:49 am
tyridge77
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Hi, I am trying to establish a Bluetooth connection with my EV3 with RobotC 4.50v. I have a built-in Bluetooth device Motorola 2.1 + EDR running with a Windows 7 64 bits OS. The pairing is successful, the COM port 3 is created, actually we have a EV3 Bluetooth logging software which uses the COM port to get measures from EV3 sensors and works perfectly. The problem arises when we try to look for the EV3 brick in Communication Link Setup by Bluetooth but the search does not retrieve any device,...
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Connection problem with built-in Bluetoot, RobotC and EV3
in Issues and Bugs
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iscjnavarro |
0 |
7857 |
Mon Sep 28, 2015 11:16 am
iscjnavarro
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We are having an issue with connecting EV3 with Robot C ( License purchased for both Robot C and Virtual World). The Robot> Compiler Target menu , defaults to Virtual World , and the option to set it to Physical Robot is disabled. Need some advise to set this up correctly asap. Thanks
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Robot Compiler Target defaults to VW and PR is disabled
in ROBOTC for LEGO MINDSTORMS
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22ams |
0 |
6159 |
Sun Sep 27, 2015 1:43 pm
22ams
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When I use the gyro to turn a specific degree it is off. Is there a way to recalibrate the gyro so it is spot on?
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Recalibrating the gyro sensor
in ROBOTC for LEGO MINDSTORMS
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techlane |
0 |
5855 |
Fri Sep 25, 2015 11:35 am
techlane
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I have updated from 4.3 to 4.5. I am now getting loads of errors and my physical robot is unresponsive. I want to revert back to 4.3 because our 1st competition is only 3 weeks away and I don't have time to mess with the code...we need time to practice! How can I get the old version back?
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want to go back to v4.3
in ROBOTC for VEX IQ
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robotmom |
0 |
7755 |
Thu Sep 24, 2015 9:52 am
robotmom
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I'm using version 4.5 for Lego Mindstorms with NXT brick and Tetrix motors and controller and software running under Windows 10. The TurnLeft/TurnRight functions do not work. Some motor functions work using the timing and speed parameters (I do not have the encoders for the Tetrix motors), but these functions don't. Why is that? Not only do they not work, but the code does not run past the first time these functions are called. And yet, I get no error messages.
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Problem with left/rightTurn in graphical Robotc 4.5
in Issues and Bugs
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Bushedo |
0 |
7592 |
Tue Sep 22, 2015 3:35 pm
Bushedo
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I wonder About function sendI2CMsg and readI2CReply in ev3! How to use? Could you give me hum example? OR inform the place, Where HAVE a detailed explanation? Thanks in advance!
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Function sendI2CMsg and readI2CReply in ev3
in ROBOTC for LEGO MINDSTORMS
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CrisHaas |
0 |
5633 |
Tue Sep 15, 2015 6:33 pm
CrisHaas
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This is a total newbie question, but I'm trying to figure out what would be needed to get an FLL class off the ground. Some of this stuff I'm coming across for the first time. Can someone explain to me why/if it's necessary to have the Virtual Brick? Would it not be sufficient to just use RVW with the ROBOTC IDE? Is the Virtual Brick more for just programming directly on the brick itself? Is that recommended over programming just using the ROBOTC IDE? Am I totally just asking nonsensical...
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Robot Virtual World with ROBOTC/Virtual Brick
in General Discussions
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blevins |
0 |
5875 |
Tue Sep 15, 2015 12:33 pm
blevins
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Want to earn a spot at VEX Worlds 2016? Join us tomorrow, Wednesday, September 9th, at 7:00 pm ET for a discussion on using ROBOTC and Robot Virtual Worlds to prepare for VEX competitions. In this interactive webinar, we’ll explore: • The VEX and VEX IQ Programming Skills Challenge for Robot Virtual Worlds • How you can earn a spot at VEX Worlds 2016 with the Robot Virtual Worlds Competition • Robotics competition resources to help you out • Great tips on how you can incorporate virtual...
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Robot Virtual Worlds VEX Programming Skills Challenge!
in ROBOTC for CORTEX & PIC
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JohnWatson |
0 |
8411 |
Tue Sep 08, 2015 5:48 pm
JohnWatson
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Hi, I found a document about using and NXT brick whit a Hitechnic controler(for tetrix) Because we are begginers, we only have Ev3 bricks... So,Is it possible to use an EV3 brick whit a Hitechnic controler(for tetrix) whit your RobotC thank you :bigthumb:
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EV3 and Hi Technic
in ROBOTC for LEGO MINDSTORMS
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nalfein |
0 |
5995 |
Fri Sep 04, 2015 12:25 pm
nalfein
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Has anyone ever had any luck running an aquarium water pump on an arduino? I'm looking into using one to propel a floating device... like a small toy boat using my arduino and motor shield. Any help would be great. thanks
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water pump ran off an Arduino?
in ROBOTC for Arduino
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tate2326 |
0 |
8277 |
Tue Sep 01, 2015 2:00 pm
tate2326
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Version 4.50 with current firmware. This line of code causes my program to hang. What am I doing incorrectly. writeDebugStreamLine("%i:", SensorValue ); If I comment out this line, my program runs great. Thanks
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writeDebugStreamLine causes program to hang!
in Issues and Bugs
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ronaldle |
0 |
7258 |
Sat Aug 29, 2015 11:03 am
ronaldle
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I am using the RobotC ver. 4.50 with an EV3 robot. When I download sound files to the robot using the Download button on the File Management dialog, the files are downloaded to /home/root/lms2012/prjs/rc Is there a way I can download the files to: "/home/root/lms2012/resources/Sounds" instead? When I look at the Detailed Preferences dialog, I can see the option for "User Sound Files" on the Directories tab. When I browse for the folder and select it, the field is updated...
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Sound files (on the robot vs on the computer)
in Issues and Bugs
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jkandra |
0 |
7695 |
Fri Aug 28, 2015 11:32 am
jkandra
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RobotC 4.32, Vex IQ Windows 7 Today we tried to update the VEX IQ Brain firmware via the button on the ribbon. It is the button between "Save" and "Compile Program." We tried several Windows 7 laptops and a Windows 7 desktop machine, nothing worked. We changed batteries, VEX IQ brains and USB cables to see if the problem was outside of Robotc. We discovered that we could download the Firmware by going to: Robot: Download Firmware: Standard file As an aside that may not...
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Firmware download button does not work
in Issues and Bugs
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kinnama |
0 |
7558 |
Mon Aug 17, 2015 12:31 pm
kinnama
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I try to install the 64 bit Lego Mindstorms NXT USB driver on my Windows 7 laptop. This ends with the message: 'Installation ended prematurely because of an error'. Can anybody help me to tackle this problem?
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Driver install on 64 bit Windows 7
in ROBOTC for LEGO MINDSTORMS
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marten |
0 |
5686 |
Mon Aug 17, 2015 11:19 am
marten
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I was testing out the built in PID from robot C 4.0, the one with the check box under the Motor and Sensors setup, and was wondering if there was a way to see what motor power was actually being dumped into the motor, not just the motor power I passed into the PID machine.
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Actual motor power for robot c built in pid
in ROBOTC for CORTEX & PIC
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chemicalcoal |
0 |
6377 |
Mon Aug 10, 2015 11:00 pm
chemicalcoal
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Hey As the title says what is your hobby what do you do the things you like?
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What is your hobby?
in Off-Topic
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Bernulf |
0 |
6833 |
Thu Aug 06, 2015 11:01 am
Bernulf
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Hey guys I am a new member in this forum. My name is Bernard have 28 years and I come from Birmingham .)
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Hey
in Off-Topic
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Bernulf |
0 |
6774 |
Thu Aug 06, 2015 10:54 am
Bernulf
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So I tried reproducing this and I am unable to. I performed the following steps in robotC 4.32 Redownloaded Kernel and EV3 firmware with USB Changed Communication window to BT only Selected EV3 from list of bluetooth connections in Communication window Downloaded sample program onto robot Clicked Rename EV3 in the communication window Renamed EV3 to "Bananna" ( my go to throwaway name) Restarted EV3 Connections window does not have another robot with the same serial number. If the...
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 Phantom Robots (and names) in communication window
in ROBOTC for LEGO MINDSTORMS
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Tabor473 |
0 |
2844 |
Tue Aug 04, 2015 10:27 am
Tabor473
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How do elementary classroom students program their robots to navigate using their color sensor to stop within 1 inch of each of the specific colors? We noticed our robot see's green far away, red sometimes, and blue never.
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color sensor
in ROBOTC for VEX IQ
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Chaback |
0 |
8067 |
Tue Aug 04, 2015 7:00 am
Chaback
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So I've been playing with some PID controls lately when something happened to the controller that caused me re-upload the firmware. After doing so, the encoder stopped working, returning an overflow value of 2147483645. I'm not sure what's wrong and what caused the problem. Has anyone encountered this problem? Need help urgently !!!
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Overflow Problem with Encoder...
in ROBOTC for CORTEX & PIC
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XineedanIDnow |
0 |
5780 |
Mon Aug 03, 2015 2:36 am
XineedanIDnow
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I recently purchased Pixycam adapter from Mindsensors and I'm testing it with Xander's drivers. Anyone knows the value to enter to scale the blobs size from cam(I don't know cam resolution) to EV3 display?
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Mindsensors Pixycam Adapter
in ROBOTC for LEGO MINDSTORMS
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giuseppe.fava |
0 |
5791 |
Wed Jul 29, 2015 6:07 am
giuseppe.fava
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Hello, I am using RobotC software version 4.32 and am attempting to download code to a Vex IQ robot controller/brain that has recently been updated to V1.15 firmware. We've successfully done this on another brain and, for some reason, are having problems repeating it on two other brains. We can't figure out why it works for one brain but not the others. Please see the character log when we try to download a program into the brain (below). Thanks in advance for any help you can provide!!!...
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Getting Error: Failed to Verify the Serial Link is Connected
in ROBOTC for VEX IQ
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Hazim |
0 |
9031 |
Mon Jul 27, 2015 9:33 pm
Hazim
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Hello ! I am feeling extremely glad to enter into this technology world. Being in the field of information technology as technology lead for various programming languages like C, C++, Ruby, PHP, Java, etc., I am really excited to be the part of this social technology community. I hope it would be an another learning experience for me in this forum community, as I am looking forward to interact with the esteemed members of this technology world. It also giving me an opportunity to share my own...
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Happy to Help with Robotics Developers Forum
in General Discussions
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ranjeet |
0 |
4462 |
Wed Jul 22, 2015 7:48 am
ranjeet
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When I compile and download to my robot, I always get the program debug window. How do I turn this behavior off. I have looked in the preference and advance preference tabs and I do not see an option to turn it off. My program works so I don't need to see the window.
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program debug window
in Issues and Bugs
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ronaldle |
0 |
5447 |
Mon Jul 20, 2015 11:12 am
ronaldle
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Hi, I am trying to download some additional sound files to the EV3. When I do, they go into the rc directory on the EV3, rather than the sound directory. And then the program doesn't find them. I suspect I've overlooked something. I've looked around on the menus for a place to set the target, but don't see anything. Any ideas or suggestions are appreciated. Thanks. Howard
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Downloading Sound Files
in ROBOTC for LEGO MINDSTORMS
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tabbycatrobots |
0 |
3965 |
Tue Jul 14, 2015 9:18 am
tabbycatrobots
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On Robotc start page, when I click on any link under the resource link, IE starts up. I do have my default program set to Chrome and the files .htm and .html default is Chrome. How can I get robotc to start Chrome instead of IE. Thanks
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Use Chrome instead of IE.
in ROBOTC for CORTEX & PIC
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ronaldle |
0 |
3566 |
Tue Jul 07, 2015 10:56 am
ronaldle
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New to RobotC. Setting up my motors. ON a VEX ARM® Cortex. Unless I have somethign configured wrong, the choices don't list my motors. They are 2-wire DC motor e.g. VEX part 276-1610 Is there a way to add my motors to the list?
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Motor selection/type question
in ROBOTC for CORTEX & PIC
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getgray |
0 |
4028 |
Thu Jul 02, 2015 5:50 pm
getgray
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I need help with my program look for the*************** in the code
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Datalogging with EV3
in ROBOTC for LEGO MINDSTORMS
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sawyerfs |
0 |
4177 |
Fri Jun 26, 2015 6:23 pm
sawyerfs
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Hi, I am trying to use the vex cortex I2C port to communicate with a non-vex sensor (to be precise, a MMA8452Q accelerometer). I believe this is theoretically possible, as the cortex master firmware now supports i2c to communicate with the vex encoders. However, I could find no support as to how to use the i2c port directly in RobotC. I am looking for a function that would enable me to send a specific message, and get the slave's reply. At first sight, two function's name look promising :...
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Cortex generic I2C
in ROBOTC for CORTEX & PIC
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mattvi |
0 |
4090 |
Tue Jun 23, 2015 2:11 pm
mattvi
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Hello community! I found the algorithm of path finding under forum from RobotC: Azhari put it in. The code was written by Tim Friez. I modified it as I needed it. It is very easy to modify the matrix/grid and change the starting point of robot and the goal. I coded it for my LEGO NXT REM-Bot, but it works without changings in RVW. Watch the video on Youtube: 3K5Z7tmUshg Here ist the code: Hope, you have fun to try it. Bye, Sigtrygg
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NEW PROJECT: Path-Finding-Robot
in Robot Virtual Worlds
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Sigtrygg |
0 |
6568 |
Sat Jun 20, 2015 2:35 pm
Sigtrygg
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Passing variables through debug stream So i am attempting to pass values from the controller to the debug stream: This code is all in a loop and so it repeats every 10 seconds. but every time i do this i get Channel 2 value: 0 and Button 5D value:0 Every time even when i press 5D or move Channel 2. Any help would be appreciated.
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Passing variables through debug stream
in ROBOTC for CORTEX & PIC
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Asim Poptani |
0 |
3904 |
Sat Jun 13, 2015 3:48 am
Asim Poptani
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I am using RobotC 4.3 Is there a way to increase the size of the "Constant Pool"? This is a section of memory that stores all of the constants used in a RobotC program. The contents of the Constant Pool can be viewed by pressing F9 after compiling the code. The "Disassembly" will be shown and the "Constant Pool" is located immediately following the "task main()" declaration. The "Disassembly" will also show a "Constants summary" at the...
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Increasing the size of the Constant Pool
in ROBOTC for LEGO MINDSTORMS
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jkandra |
0 |
3507 |
Tue Jun 09, 2015 10:36 am
jkandra
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We have written a program to send a message from one NXT to another to get a sensor value. However, we are running into trouble when trying to get the value back on the first NXT who asked for the value (the other NXT should have received a number "101" to which it should send the value back). This is the code on that NXT: When we run the two programs, we know that one of the NXTs receives the "101" and checks the sensor value, displaying it on the screen. The other NXT,...
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Bluetooth Receiving
in ROBOTC for LEGO MINDSTORMS
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smallkitten |
0 |
3186 |
Mon Jun 01, 2015 8:22 pm
smallkitten
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This has been fixed in the upcoming release :) = Xander
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Renaming in 4.x
in Issues and Bugs
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mightor |
0 |
5078 |
Mon Jun 01, 2015 3:29 am
mightor
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This is an open letter to all members of this site asking for helo and info. I have seen a number of videos featuring a handmade automatic pinsetter based on BRUNSWICK and AMF real pinsetters such as the A2 or 82-70/90. All fully robotized/motorized, fully functional as in the real pinsetter. The builders are not identified, nor is there a way to contact any builder. What I would like to ask is links to builders or published plans for a pinsetter built from LEGO parts, or an existing LEGO kit...
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lego pinsetter
in General Discussions
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rtrg |
0 |
3870 |
Thu May 21, 2015 11:42 am
rtrg
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Hello! Thank you for reading this. I'm making an labyrinth robot. I have studied a lot of this class of robots. I have a question for all the people that have worked with "micromouse". I will use homemade infrarred sensors ( IR LED + photoTransistor) but I want to know your opinion about putting the sensor in my robot a 90 degres , I mean at 0°, 90° & 180° or putting them in 45°, 90 ° & 135° ? Actually I'm adding the encoders too. But for the final desing I need to consider...
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What is the best position for infrarred sensors?
in General Discussions
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Ryutaku |
0 |
3687 |
Sun May 17, 2015 3:26 pm
Ryutaku
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I am using a hitecnic compas in EV3 and when I am going to compilate the program this warns problems with the library
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problem with library "advanced sensor"
in Third-party sensors
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CyD |
0 |
5494 |
Tue May 12, 2015 6:44 am
CyD
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Hi, Recently I have been trying different controllers for RVW. I had an Xbox controller working several weeks ago, and recently I tried plugging in a PS4 controller and trying that. The first day I tried it, (yesterday) it was working fine, all I had to do was re-configure the joystick. Today, I tried to open the Joystick Configuration, and my RVWs crashed. Whenever I try to reconfigure the joystick with it plugged in, it crashes. I can open the Controller Reconfiguration window when the...
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Controller Configuration Crashing RVW
in Robot Virtual Worlds
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9807b |
0 |
6438 |
Sat May 09, 2015 3:11 pm
9807b
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I'm new to Vex, but not new to ROBOTC. My first few attempts at downloading programs to the Vex were successful; however, after that, I would get a dialog asking me to select a communications port to use for the procedure. Sometimes my robot would be in the list, and sometimes the list would be empty. Either way, upon clicking the 'Okay' button in the dialog, it would simply reappear. This is troubling because it happens on any computer, with either of our robots, over either a USB or Vexnet...
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Communication Link Between Vex And PC Is Broken
in ROBOTC for CORTEX & PIC
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Coder A |
0 |
3942 |
Mon May 04, 2015 1:26 pm
Coder A
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I am running RobotC 4.30 on a Windows 7 PC. I have an early production EV3. I can write, download, and run programs from the PC or EV3. After I download the program to the EV3, if I set a global variable from the PC, the EV3 locks up and battery must be removed to recover. If this is a new bug and not repeatable I can post code and more details. If it is a known issue or easily repeatable I will let the professionals take it from here. Thanks for your support.
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RobotC 4.30 EV3 lockup
in Issues and Bugs
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CARBOT |
0 |
5544 |
Thu Apr 30, 2015 12:07 pm
CARBOT
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This is an issue from my previous topic, but I would like to open another one because I can reproduce the error now. I have three quadrature encoders plugged into the cortex, and 11 out of the 12 digital ports are being used. When I plug these quad encoders into different ports and 'open debugger manually' in robotC to view sensor values, the encoder which has a wire plugged into port 4 can have invalid values of -1, 0 or 1. Here are the steps to reproduce the error. 1. Plug the three encoders...
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Quadrature sensor not working when plugged in cortex port 4
in ROBOTC for CORTEX & PIC
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goneaswind |
0 |
3636 |
Wed Apr 29, 2015 7:01 am
goneaswind
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Hi there, new to the board. I'm wondering if there is a RobotC equivalence to Arduino's "analogWrite()" function? The reason that I ask is because I've added a PIR sensor to the VEX PIC and wanted to set the sensor to low right after the robot has stopped moving, instead of having to put a "wait" function for it to turn off. Thanks in advance!
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PIR sensor
in ROBOTC for CORTEX & PIC
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eibbedkcapkcab |
0 |
3528 |
Mon Apr 27, 2015 10:49 pm
eibbedkcapkcab
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Quais são os sensores de medição de distância para arduíno existentes?Vocês podem me passar links com as informações sobre os sensores que medem distância existentes? Também quero saber sobre suas experiências com algum(ns) do(s) sensores, então se tiver, por favor relate-a tipo sobre o alcance prático e a precisão. Desde já, agradeço.
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Quais são os sensores de medição de distância para arduíno?
in ROBOTC for Arduino
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gilmartaj |
0 |
6004 |
Mon Apr 27, 2015 2:20 pm
gilmartaj
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Been having a miserable time with the white keys. I have followed the download/update procedures for everything that I can think of and as spelled out on the VEX update sheet. When they are plugged in, they blink blue for a moment and then nothing. What version of the VEX key update runs with which version of RobotC? Any suggestions would be much appreciated.
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White Keys won't connect
in ROBOTC for CORTEX & PIC
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r_myers |
0 |
3349 |
Tue Apr 21, 2015 8:41 pm
r_myers
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I have a new computer. How do I move my copy of Robotc from my old computer to my new computer.
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move 4.30 from old computer to new computer.
in ROBOTC for CORTEX & PIC
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ronaldle |
0 |
3087 |
Sat Apr 18, 2015 8:02 am
ronaldle
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I am trying to control 3 motors with a remote I used the optimized sample code which by itself works fine for 2 motors. (I can control robot) I tried to add a 3rd motor control via buttons 5 and 6 (From curriculum notes on robotC) I am attaching the program (The NXT says it is a "Bad Version") when I download it and try to run it? Attached program---what is wrong at the bottom please?
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Remote control NXT
in ROBOTC for LEGO MINDSTORMS
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alisbahc |
0 |
3073 |
Mon Apr 13, 2015 8:07 pm
alisbahc
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Hello, I'm a newbie with RobotC and am interested in controlling a NXT and EV3 from a laptop and joystick at the same time (as part of the same robot). Is this possible? Thanks, Brad
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Controlling NXT and EV3 Simultaneously
in ROBOTC for LEGO MINDSTORMS
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bradomail |
0 |
3263 |
Fri Apr 03, 2015 10:14 pm
bradomail
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