The Vex Microcontroller

 

 

The Vex Microcontroller

VEX MICROCONTROLLER PRODUCT SPECIFICATIONS

The VEX Cortex Microcontroller coordinates the flow of information and power on the robot. This is the robot’s brain, so all other electronic system components must interface to the microcontroller to allow a robot to function properly. Here are its parts and specifications:

STMicroelectronics ARM Cortex-M3 user processor Wireless with built-in VEXnet technology (8) Standard 3-wire Motor ports (2) 2-wire Motor ports (1) I2C "smart sensor" port (2) UART Serial Ports (8) Hi-res (12-bit) Analog Inputs (12) Fast digital I/O ports which can be used as interrupts Programmable with easyC (a drag and drop, VISUAL programming language that requires very little training) for Cortex or ROBOTC for Cortex & PIC

The VEX Microcontroller allows all other system components to function as a cohesive unit. It contains the robot's program and processes all signals received from both human operators and onboard sensor systems. It also manages power allocation on board the robot, and directly controls the motors.

Motor Ports: Connect up to (8) VEX motors or servos. Interrupt Ports: Interrupts are digital inputs designed for high priority signals that need immediate attention from the Microcontroller. Digital/Analog Input Ports: 16 multipurpose input/output ports for sensors. TX/RX Ports: Allow the user to communicate directly with the user processor inside the Microcontroller via a TTL serial port. Serial Port: Use with the VEX Programming Kit to re-program the Microcontroller. Rx1 and Rx2 Ports: Connect radio receivers to communicate with the Microcontroller wirelessly from a Transmitter. Battery Port: Connect a 7.2V power sources, such as the Battery Holder or the VEX 7.2V Robot Battery.

Here are the PIC Microcontroller V0.5’s parts and specifications:

- Wireless with the 75MHz receiver and transmitter Microchip PICmicro® PIC18F8520

- Speed:10 MIPS (Million Instructions Per Second)

- RAM:1800 bytes + 1024 bytes EE2

-Flash:32K program space

- (16) Digital I/O, Analog In Digital In:50 KHz input frequency Analog In:10-bit resolution 10 ìSec access time I/O Schematic: Schematic

- (6) Interrupt I/O

- Usage: Measuring Input changes via software interrupt (1) Serial Port

- Usage: Reprogramming and debugging

- Speed: 115Kb

Programmable with easyC, ROBOTC, or MPLAB 10 MIPS processor speed 32K program space 100,000 erase/write cycles 16 digital input/output ports 8 PWM motor/servo outputs Usage: For VEX motors or servos Type: Hobby standard PWM Refresh: Every 18.5 mSec

Here are the VEX microcontroller’s specifications in terms of performance: Digital input frequency: 50 KHz Analog input access: 10 ìsec User microcontroller: Microchip PICmicro® PIC18F8520 Processor speed: 10 MIPS (Million Instructions Per Second)

Programming: Language: PIC C Program space: 32 K words = approximately 128 KB (hex file) RAM: approximately 2 KB, for memory-mapped I/O and PIC devices EEPROM: approximately 1 KB, for data memory Programming tools: Microchip MPLAB IDE, easyC, or text-editor/Makefile C18 Compiler

The size of an average Vex micro controller is 4.5 in W x 3.9 in L x 1.1 in H with a weight of about .278 lbs (126 grams). It costs anywhere from $150 to $250.

Vex Microcontroller at Vex Robotics



New! Comments

Have your say about what you just read! Leave me a comment in the box below.

Recent Articles

  1. Stu the AI Robot

    Jul 23, 16 12:26 AM

    Stu the AI Robot - Debugging

    Read More

  2. Best Game Camera Security Box

    Jul 07, 16 10:47 PM

    Camera stolen again? This is the best Game Camera Security Box on the market. It...

    Read More

  3. Robots and Androids

    Jul 03, 16 12:50 AM

    A site with information on robots and androids including their history, building them, and so much more.

    Read More

Robot-Android-Blog  Read our blog about robots, building robots, and easy robot building.

How to Build a Robot How to Build a Robot takes you through each step required to build a robot.

Build an Arduino Robot Yes you CAN! We get you started.

Robot Comics Robot Comics are HERE! We start off our comics with...

Virtual Steve Jobs Virtual Steve Jobs? Steve Jobs is gone and we missed him so much we re-created his essence in software...

The EZ Robot Review The EZ Robot Review. This article reviews the EZ Robot building system, the robot board and system for beginner's robot building.

Medical Robots Medical robots are now showing their silver faces in hospitals and doctors' offices across the world.

Roomba Repair Quick and Simple Fixes for Your iRobot Roomba vacuum

Roomba Batteries How to extend the life of your Roomba's battery. Buy replacement batteries here.

Robot Cars - Yesterday’s Vision, Today’s Reality Are robot cars 'on track' to becoming the way of the future? What issues are at stake at their current level of development?

Robot Car Safety - The Future of Today’s Vehicles

Robot Car Safety can be identified by two main technological components - lacking in human drivers -a (1) instant reaction time and (2) 360-degree awareness of the road.

Educational Robots Learn robotics with these educational robots..

Robot People Robotic replicas of people - robot people - are starting to pop up here and there. We even visit a company who is today making them to order.

Hacking Elvis - The Alive Elvis Animatronic Robot In these articles we show you how to run your Alive Elvis from a microcontroller such as the Arduino and the Basic Stamp. Hacking Elvis...

Wall-e toy robots from Disney Wall-e toy robots are still popular this year

R2D2 Toy Robot : Interactive-Astromech Droid Here's a review of the high-end R2D2 toy robot, the interactive astromech droid.

Toy Robot Dogs Toy Robot dogs: In the robot pet store, you will find toy robot dogs - robomuts if you will - of all sizes, shapes and prices.

Wowwee Robotics Wowwee Robotics has been building toy robots for years.

Lost in Space Toys : The Robot Lost in Space Toys : There have been scores of toys built resembling the Lost in Space Robot, sometimes call by his model number "B9"...

Tribot Robot The tribot robot is one of the most entertaining toy robots that has come from Wowwee...

Terminator Robots Terminator Robots : The Terminator movies and television show brought robots to...

Artificial Intelligence: Our Brain In That Small Chip Artificial Intelligence was once thought of as an impossible feat. Now, with modern advancements in robotic technology, machines can be made to think like humans.

R2D2 - An Adventurous, Resourceful, and Loyal Robot R2D2 demonstrates several notable characteristics every human can learn from, in spite of the fact that he is, a robot. Read his biography here.

Anybots Vistual Assistant Robots - The Coming of Age in Telepresence Robotics Anybots Virtual Assistant Robots are expected to grow in a few years, or perhaps sooner.

BlueBiped: Propelled by it's Own Weight BlueBiped uses no power source to walk. This robot has set a Guinness World Record, walking nonstop for a distance of 15 km (9.32 miles), the longest distance ever walked by a bipedal robot

EZ-Robot May Be the Easiest Way to Build a Robot EZ-Robot May Be the Easiest Way to Build a Robot. The EZ-Robot is a $235 kit that includes everything you need to transform one of your old toys into a functional robot.

Introducing MorpHex, a Spherical Hexapod Robot Introducing MorpHex, a Spherical Hexapod Robot. Imagine a robot shaped like a ball which transforms into a walking six-legged contraption. That’s a description of MorpHex, created by Kare Halvorsen.

Recovering Kids Monitored by Robots After Surgery Recovering Kids Monitored by Robots After Surgery. A Boston, Mass. hospital introduces a sci-fi worthy caregiver system, where patients can go home and stay monitored by robots after surgery.

iCub the "Baby Robot" - Learns to Crawl Like a Baby Have you heard of the iCub? It is a one-meter high android originally developed by the Europe-based RobotCub Consortium. The iCub strongly resembles

Dongbu Robot HOVIS Kits Allow Users to Build An Android Phone Powered Robot Dongbu Robot HOVIS Kits Allow Users to Build An Android Phone Powered Robot

Search
Robots and Androids

Bing

CLICK HERE

to read about the

ROBOT COLLEGE

Build an Arduino Robot!

Get the ebook.

Only $.99!