How Does PWM Work?

How Does PWM Work?

Question: What is PWM, and how does it work to control a motor or any other output? Answer: PWM stands for Pulse Width Modulation and allows you to easily control an output in a digital system. Some things that you can control with it might be the speed of a DC motor, or the brightness […]
Introduction to RobotC and VEX Inputs & Outputs

Introduction to RobotC and VEX Inputs & Outputs

When you think about it, in manufacturing, controlling things is necessary to perform very complex tasks to manufacture items to tolerances finer than a human hair. Think about all of the systems that have to be controlled in a single work cell in a factory… then multiply it by 10’s or 100’s of cells. Mind […]
WORK UNPLUGGED: VEX ROBOT? IT ONLY WORKS WHEN TETHERED!

WORK UNPLUGGED: VEX ROBOT? IT ONLY WORKS WHEN TETHERED!

Question: How do I get my robot to work when I unplug my cortex from the computer? Solution: Just change the setting you see in the picture here, and you will be all set! After you change this it will ask you to power cycle your cortex. Just turn it off and back on again, […]
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 […]
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 […]
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 […]
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!    44 total views,  2 views today
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. […]
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 […]

Chris and Jim CIM
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