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4 & 6 Wheel Robots

Four and six wheeled robots are generally used to carry higher payloads and/or traverse rough terrain. You will also find omni wheel and Mecanum driven robots which provide increased manoeuvrability.

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  • Lynxmotion Aluminum A4WD2 Rover Kit
    Nice kit, outstanding customer support
    Review by Chris
    The kit only contains mechanics and motors (plus on/off switch). This was exactly what I was looking for. I ordered the batteries as well and worked on my own electronics. I'm so far quite happy with the result.

    My experience with the customer support was excellent.
    (Posted on 7/2/14)
  • DFRobotShop Mecanum Rover 2.0 - Arduino Compatible Robot (Basic Kit)
    Let down by one flaw
    Review by Joel
    Kit is of reasonable physical quality, except the USB port is only soldered down and quite weak. Major design flaw in the board is that the PWM output for the motors uses up all the timer pins on the arduino.

    -------------------------------------------------------------------------------------------------------------

    Hi Joel,

    We are certainly sorry to hear that you had an issue with the USB connector, and assuming the product was under warranty, would have replaced the entire board free of charge. With regard to the pinout, we had to choose four pins to dedicate to the onboard dual motor controller. We did our bes tot choose pins which are as little used by other shields as possible. Unfortunately a Mecanum driven robot requires a total of four H-bridges (each needs one digital pin and one PWM pin), meaning a total of eight of the 13 digital pins on the Arduino are used. If you add encoders, those require a further four pins, leaving only the analog and either the Tx or Rx pin.

    The RobotShop Team

    (Posted on 6/4/14)
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New Lynxmotion Wheeled Rovers

Posted on 30 August, 2013

By Coleman Benson & filled under Robotics Projects & Kits.

Lynxmotion is well known for its high quality robotic construction kits, especially walking robots and robotic arms, but did you know the same modular SES system can be used to make wheeled rovers? Lynxmotion has recently released two new wheeled rover kits based on this principle: the A4WD2-KT and the A6WD2-KT. The new rovers were [...]
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Chapter 11: How to Replace Roomba Discovery Drive Wheel

Posted on 01 November, 2013

By Julie Gendron & filled under Domestic, Ultimate Roomba Resource Center, Vacuum.

This guide will explain how to replace the drive wheel on a Roomba Discovery 4XXX/4XX series, pictured below: 11.1          Drive Wheel Replacement Roomba replacement drive wheel can be found at RobotShop. Removal Phase 1 - Remove the wheel spring from the side motor holder. 2 - Remove the side charging socket. 3 - Unscrew [...]
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Chapter 10: How to Replace Roomba Discovery Caster Wheel Drop Switch

Posted on 01 November, 2013

By Julie Gendron & filled under Domestic, Ultimate Roomba Resource Center, Vacuum.

This guide explains how to replace the front caster wheel drop switch on a non-swivel Roomba Discovery 4XXX/4XX series, pictured below: 10.1          Caster Wheel Drop Switch Replacement Roomba replacement caster wheel drop switch can be found at RobotShop. Removal Phase 1 - Unscrew screws (A). 2 - Remove any glue holding [...]
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Chapter 9: How to Replace Roomba Discovery Front Caster Wheel

Posted on 01 November, 2013

By Julie Gendron & filled under Domestic, Ultimate Roomba Resource Center, Vacuum.

This guide explains how to replace the front caster wheel on a non-swivel Roomba Discovery 4XXX/4XX series, pictured below: 9.1          Caster Wheel Replacement Roomba replacement caster wheels can be found at RobotShop. Removal Phase 1 - Unscrew both caster wheel holders. 2 - Remove any glue holding the purple caster wheel wire. [...]
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Chapter 4: How to Replace Roomba Discovery Main Brush Motor

Posted on 01 November, 2013

By Julie Gendron & filled under Domestic, Ultimate Roomba Resource Center, Vacuum.

This manual explains how to replace the main brush motor on your Roomba Discovery 4XXX/4XX series, pictured below:   4.1                   Main Brush Motor Replacement Roomba replacement main brush motor can be found at RobotShop. Removal Phase 1-                    Remove any glue that holds the motor connection in place. 2- [...]
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The wheel encoders are found in the robots wheels so it is usually hard to see if there is an issue. If you let the Scooba clean for a few minutes, ...
2014-05-15 14:46 by Jgendron
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When you use skid steering on a four wheel robot (two motors or four, it does not matter), the wheels will always need ... very wide frame with wheels on the end - it's much easier for that to turn. 2WD robots have no problems turning and moving on flat surfaces, but might have issues ...
2014-05-08 08:57 by CBenson
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Forgot to mention, that one of my first robots to play with was one from Seattle Robotics Society: http://www.seattlerobotics.org/WorkshopRobot/index.php ... which included some stripped down version of an earlier version of Nubotics wheel watchers. This version, they did not have all of the fancy ...
2014-04-30 10:46 by linuxguy
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Forgot to mention, that one of my first robots to play with was one from Seattle Robotics Society: http://www.seattlerobotics.org/WorkshopRobot/index.php ... which included some stripped down version of an earlier version of Nubotics wheel watchers. This version, they did not have all of the fancy electronics, ...
2014-04-30 10:00 by kurte
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... motors and were moving around 140lb robots with them. For 26$ a motor I am happy with a pair of them. ... get 20min of use. The castor type back wheels should work nice. Do you have any recommendations ...
2014-01-06 15:29 by kevilay
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Cleaning the wheel sensors would be a good idea. If you open the robot up, you might as well also clean the bumper sensors thoroughly with compressed air. They are found on the robots motherboard in two black holders. You will see a black arm moving inside the sensor ...
2013-12-20 09:54 by Jgendron
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... which are found on the motherboard). The other issues could be with the wheels. Once wheel not spinning or the encoders on the wheels are dirty. ... or a can of compressed air. Especially the wheels and under the robots bumper.
2013-12-16 17:09 by Jgendron
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Yes, old Neatos only have the wheel spring attached to the bottom chassis. But, there is a workaround if the wheel ... bottom chassis itself broke, we suggest that you screw the tension spring in the robots cover. You will see two openings in the top cover where you can screw the springs. ...
2013-11-29 14:43 by Jgendron
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... "standard" (it's normally 4mm or 6mm). As such, we don't have any wheels which can be directly connected to that shaft, or even a wheel + hub ... Note too that most people don't used stepper motors for mobile robots. Perhaps the following can help you to create your own: http://www.robotshop.com/en/pololu-universal-aluminum-5mm-mounting-hub.html ...
2013-11-13 09:51 by CBenson
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Hi, I am new to robots and this is my very first build. I am aiming to build a 4 wheeled rover that zooms around the house. So far I have chosen the sensors, ...
2013-10-09 05:48 by redmug
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... ease of installation, price and easy to install accessories (such as a wheel). However, these robots are usually restricted to robots you can easily hold in your hand. As the robot becomes ...
2013-09-24 15:21 by CBenson
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... yardbot this winter and adding a third set of motors to make the unit 6-wheels but after some thought I just can't see how it would make the bot ... into it and now I can't come up with a better V-2. It's not like small robots where you can make and remake frames from simple aluminum. This actually ...
2013-08-21 09:02 by Jongig
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Sabertooths are the norm when it comes to mobile robots. If you want something more rugged / industrial / versatile consider RoboteQ.
2013-05-13 17:01 by CBenson
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Hi Jim, At first glance, it does sounds like your robots wheel is defective. Can you feel the same resistance while turning the right wheel as you do with ...
2013-03-08 10:10 by Jgendron
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... I was thinking something like the "WD Mecanum wheel mobile robot kit 10011". The videos show it ... required that would be difficult? 2- Beyond 4 units and 4 RF Wireless controllers, what else ... geo-location within a large room. None of the robots we carry have a QR or barcode reader, so ...
2012-11-26 13:41 by vprex
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