Programming Solutions

  • VEX: Transfer System Example & Hydraulic Parts Feeder & Gripper

    VEX: Transfer System Example & Hydraulic Parts Feeder & Gripper

    Question: There really isn’t one. Just this video with examples of a VEX Transfer System, a VEX hydraulic parts feeder, and a VEX hydraulic gripper.Read More »
  • WHERE DID MY NATURAL LANGUAGE GO, AND HOW DO I GET IT BACK?

    WHERE DID MY NATURAL LANGUAGE GO, AND HOW DO I GET IT BACK?

    Problem: Natural Language disappeared from the function library on my students computer. How do I get it back? Solution: First off, why does RobotC do this? Who knows. Why isn’t Natural Language a default? Why is detailed preferences buried three menus deep? These are questions for other solutions. Secondly, watch the 2 minute video below […]Read More »
  • HOW DO YOU HANDSHAKE BETWEEN 2 VEX CORTEX’S?

    HOW DO YOU HANDSHAKE BETWEEN 2 VEX CORTEX’S?

    Problem: How do you handshake with two VEX Cortex’s? I can’t seem to get it to work! Solution: I had to call in the big guns on this one; Jim is a RobotC programmer extraordinaire. He put together the tutorial below.  Not only that, but he and I wrote the powerpoint and the teacher’s notes […]Read More »
  • PLATFORM TYPE: ERRORS WHEN COMPILING?

    PLATFORM TYPE: ERRORS WHEN COMPILING?

    Question: Why won’t my RobotC program compile today without errors, but it did yesterday? Solution: Probably because you forgot to change your Platform Type Settings. This happens in my lab when a student uses a different computer. Just make sure platform type is set to VEX 2.0 Cortex, and Natural Language PLTWis checked!Read More »
  • Example Factories

    Example Factories

    Question: Do you have any sample factories I can show my students to get them excited? Solution: Sure do…. see the links below!  Be sure to send us any that you and your students do… we would love to feature them here! CalPoly’s 2015 Factory that Assembles the lid to a container that was built […]Read More »
  • How do I Handshake A VEX Cortex With a Lynxmotion Arm?

    How do I Handshake A VEX Cortex With a Lynxmotion Arm?

    IF YOU CANNOT READ THE DIAGRAMS BELOW,PLEASE CLICK ON THE DOWNLOAD BUTTON TO GET A PDF VERSION! Lynx-VEX Handshaking Notes Question: How do I receive a signal on a Cortex from the SSC-32 (Lynx Robot) in RobotC? Answer: One way to do it is shown in the example below. A machine is waiting for a […]Read More »
  • How do I Update my Firmware in RobotC?

    How do I Update my Firmware in RobotC?

    Question: How do I update the firmware in RobotC… the “automatic” method doesn’t work! Answer: Funny! (Not really…) It doesn’t work in my classroom either! Watch the short video below to see how it’s done!  Read More »
  • HOW DO I DO A FIRMWARE UPDATE?

    HOW DO I DO A FIRMWARE UPDATE?

    Question: How do I do a firmware update?  The automatic one doesn’t work. Why? Solution: I don’t know why it doesn’t work, but it doesn’t in my classroom as well. Oh well. Below is a short video of how I get it to update in my classroom using the “manual” method.  Read More »
  • HOW DO I STOP ROBOTC FROM UPDATING?

    HOW DO I STOP ROBOTC FROM UPDATING?

    Problem: My kids always update RobotC on my computers, how can I stop this? Solution: This can cause many problems in a classroom. Mostly because then you may have more than one version in the same class, and this wreaks havoc when they go to a different computer, as the Cortex’ firmware may not match. […]Read More »
  • WHAT ARE THE VALUES FOR ALL OF THE VEX SENSORS?

    WHAT ARE THE VALUES FOR ALL OF THE VEX SENSORS?

    Question: How do I know what all the values are of all the different sensors? It can be overwhelming! This post is ARCHIVED, meaning links may or may not work, and it may not scale well on a mobile device as it was written a while ago. Solution: Lucky for us, our friend Dan Keith from […]Read More »
  • WHAT ARE BOOLEAN OPERANDS?

    WHAT ARE BOOLEAN OPERANDS?

    Question: What are boolean operands, and how do I use them in RobotC? Solution: Boolean Operands are used in programming because there are only two conditions that can be true. (Digital) On or Off, 1 0r 0, True or false…  With that being said, there are many that can be used and there is a […]Read More »
  • WHAT’S THE PROPER START UP PROCEDURE TO GET MY CORTEX TO CONNECT?

    WHAT’S THE PROPER START UP PROCEDURE TO GET MY CORTEX TO CONNECT?

    Problem: What’s the proper start up procedure to get my Cortex to connect? Solution: Great question. I have had some people refute this, but here’s what works in my classroom:  Read More »
  • HOW DO I CONNECT A VEX CORTEX TO A SCORBOT?

    HOW DO I CONNECT A VEX CORTEX TO A SCORBOT?

    Problem: How do you communicate from a VEX to a SCORBOT? When I hook it up using an optical isolater, there is no voltage. Solution: Lets set it up like this: VEX is the OUTPUT, and the SCORBOT is the INPUT. Always use a relay, optical isolator or just a switch; NEVER HOOK UP A […]Read More »
  • HOW DO I GET MY LINE FOLLOWER TO STOP AT AN INTERSECTION?

    HOW DO I GET MY LINE FOLLOWER TO STOP AT AN INTERSECTION?

    Problem: I want my AGV to stop at an intersection in the black line using the linefollowers so it can pick up parts. How do I do it?   Solution: Thanks Matt B for the ideas. There are a couple ways to make this happen. 1.You could do three if(sensorvalue)’s in a row downward. or […]Read More »
  • I WISH I HAD SOME EXAMPLE PROGRAMS IN ROBOTC!

    I WISH I HAD SOME EXAMPLE PROGRAMS IN ROBOTC!

    Problem: Are there any example programs in RobotC that will help me with beginning programming? Download zip file with all the programs below here.   Solution: As a matter of fact; here they are! Download the zip folder for all of the programs and notes listed below. These programs were written by Jim and I […]Read More »
  • VEX EXTRA PARTS

    VEX EXTRA PARTS

    Question: I have my VEX kits, and it seems I have a bushel basket of extra wheels, and not enough sensors or cool stuff for my kids to use. What do you suggest I buy as extras, and how many? This post is ARCHIVED, meaning links may or may not work, and it may not […]Read More »
  • DO YOU HAVE A BLANK CORTEX I/O TEMPLATE?

    DO YOU HAVE A BLANK CORTEX I/O TEMPLATE?

    Problem: Is there a template in Word, that I can use as a template for students to plan out inputs and outputs on the cortex? Solution: Yep.   Download the file here    Read More »
  • IS THERE AN EASIER WAY TO MAKE THE VEX TESTBED?

    IS THERE AN EASIER WAY TO MAKE THE VEX TESTBED?

    Question: Is there an easier or faster way to make the testbed? The VEX take a very long time to work with, and there must be an easier way to do it. Solution: Well, there is; if you have a laser and access to some acrylic. Jim has designed a VEX testbed that can be […]Read More »
  • I’M HAVING PROBLEMS WITH ROBOTC AND/OR MY CORTEX, WHAT DO I DO?

    I’M HAVING PROBLEMS WITH ROBOTC AND/OR MY CORTEX, WHAT DO I DO?

    Problem: I’m having problems with RobotC and/or my Cortex, what do I do? This post is ARCHIVED, meaning links may or may not work, and it may not scale well on a mobile device as it was written a while ago. We kept this around for its humor content. And yes…. I really did have a competition […]Read More »
  • HOW DO YOU STORE YOUR VEX KITS?

    HOW DO YOU STORE YOUR VEX KITS?

    Question: How do you store your VEX kits to keep them separate, yet mobile? This post is ARCHIVED, meaning links may or may not work, and it may not scale well on a mobile device as it was written a while ago. Solution: I’m going on my third year here at Cal Poly Pomona in sunny […]Read More »

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Jim Hanson

Chris Hurd

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