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I am thinking of a project proposal for my robotics course and we are required to make one that has a potential application on physical therapy or medical fields. One thing that came across my mind is a motorized wheelchair that moves when a stress ball control is squeezed by the user. As a robotics novice, I wonder if... |
This is from the icreate 2's document:
"Pins 1 and 2 (Vpwr) are connected to the Roomba battery through a 200 mA PTC resettable fuse. The continuous draw from these two pins together should not exceed 200 mA. Do not draw more than 500 mA peak from these pins, or the fuse will reset."
My project just need to draw a bit ... |
If I build my quadcopter with the following components, will it take off vertically smoothly?
Frame: F450 glass fiber and polyamide nylon [280g]
Landing Gear: High Landing Gear for F450 [90g]
Battery: 3000mAh 20C (30C burst) 3s/1p [260g]
Motor: XXD A2212 1400KV brushless outrunner motor [4x50g]
ESC: 30A (40A burst) Bru... |
I am using a differential wheel robot for my project. I need to know the current coordinates of the robot with respect to it's initial position taken as the origin. I m doing the computation on an Arduino UNO and the only sensory input that I get is from the two encoders. I have the function updateOdomenty() called in ... |
First, I don't see any manufacturer or online store telling whether an ESC is PPM controlled or not. Second, I have also been Googling and asking comments in all about ESCs youtube videos for long, but I couldn't find anything useful.
Why do I need PPM controlled ESCs?
I'm doing a project based on AndroCopter and its... |
I am the moment having some issues with an Jacobian going towards a singularity (i think)as some of its values becomes close to zero, and my robot oscillates, and therefore thought that some form of optimization of the linear least square solution is needed.
I have heard about the interior point method, but I am not s... |
I have purchased the undermentioned robot chassis with DC motors supported with plastic gears from a local store. There is a 3A battery holder and when I connect robot to that and put it on the ground both the motors working fine and smooth. But when I connect the L298N motor controller which was made by myself and tes... |
I have a project that is going to involve capturing ~80 images of a 35m x 50m agricultural study area for image processing.
I am wondering whether to use a NAZA v2 or PixHawk controller to outfit my ship (on a DJI F550 Flamewheel airframe).
My understanding is that Naza is limited as far as the amount of waypoints I ca... |
I want to make pc controlled quadrotor. All the tutorials/projects made with rc receiver. I want to use arduino or xbee instead of rc receiver for pc control of quadrotor. How can I do this.
Note: I have arduino, beaglebone, xbee, hc-05, KK2 and multiwii parts.
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I have three HC-SR04 sensors connected to a PIC18F4431 with the schematic provided below. Before building the PCB I've tried testing all three sensors with a bread board and they worked fine. But now I have my PCB and when I connect them to that and tried testing, they work only for a few seconds and then stop working.... |
I've kind of finished implementing a BiRRT for a 7 DOF arm, using a KD-tree from numpy.spatial in order to get nearest queries. A picture is below:
I'm currently having trouble with the fact that it is impossible to retrieve a path from the start node to a particular node using a KD-tree, and while I do have an array ... |
Before I ask my question, I'd better confirm that I've read the most prominent post about running ROS on Raspberry Pi devices.
That post contains some valuable information, but it's a bit dated, and ROS support for ARM devices is much better these days. In fact, ROS 2.0 is evidently going to have excellent support for ... |
Eigen library (http://goo.gl/cV5LY), which is used extensively in ROS and PCL.
Thank you.
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I have got a robot that exactly looks like as shown in the figure above. I have worked out the inverse kinematics analytical solution without the base rotation (considering 2 dof alone) but I am not able to find the analytical solution including the base(3 dof). How do I find the anlytical solution for this robot ??
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I am working on proposal of autonomous fire fight robots but I'm little bit confused about its sensor and algorithms. My friend suggested there are some path finding AI algorithms like BFS, DFS, A*, and Dijkstra's Algorithm which are used in robots, but I didn't believe it.
I want to ask: Are these algorithms used in ... |
Can a micro controller flash itself?
What i mean to say is, I have an STM32F103RG with 1Mb Flash Size.
I have a UART Communication modem connected to it. Can i send a firmware (.HEX or .BIN) to the microcontroller via the radio verify checksums, on sucess the microcontroller saves the file into a SD Card ( via SPI ) a... |
What should a quadcopter have, or have access to, in order to make this 'return home' feature work? Is GPS enough? What is the approach needed to make this happen?
I used a Arduino Mega 2560 with IMU to stable my quadcopter.
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I'm hoping to use a DC motor to drive a cog bar horizontally along a track. AFAIK, I'd need to install a (plastic) cog on the motor shaft, which itself grips on the (plastic) cog bar. Does anyone know how to prevent the cog from shifting on the shaft? The shaft is 10mm long and I'd like to make sure the cog cog sits at... |
I have a iRobot Create model 4400 and I need to send commands to the open interface through Ubuntu. I'm using gtkterm at 57600 baud but when I press play button, it only drives around itself. I have tried to send commands as raw data and as hexadecimal data but it doesn't work.
What am I doing wrong?
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I bought a 3-axis magnetometer (Similar to this one ) And plugged into an Arduino in order to read the heading value.
I mounted it on my robot and I drove with the robot for around 30 meters, turned 180 degrees and drove back to my starting position. I plotted the heading value and it shows inconsistent values. The 180... |
I'm looking at the N20 DC motor which is fairly popular. Does anyone know if the shaft could be swapped out for a threaded shaft?
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I am thinking about building a small robotic arm with 4 small servo motors and an arduino uno to apply basic neural networks concepts.
Is it a good idea to use a hand made robotic arm to learn more the power of neural networks?
Thank your for your time and Merry Christmas
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I am currently in the process of writing a pose estimation algorithm using image data. I receive images at 30 fps, and for every image, my program computes the x,y,z and roll, pitch, yaw of the camera with respect to a certain origin. This is by no means very accurate, there are obvious problems such as too much exposu... |
I have studied Claus Brenner's lectures on how to implement the FastSLAM 1.0 algorithm, where each particle maintains the robot pose, and maintains EKF's of the landmarks.
However, I'd like to implement FastSlam 2.0. Which I understand uses particle filters completely. Is this the same as FS 1.0, but instead of each pa... |
Good day,
I have a robot with an IMU that tells Yaw Rate, and Magnetic heading. It also tells Xvelocity and YVelocity at that instance of the vehicle, on the vehicle frame. (So irrespective of heading, if the robot moved forward, yvelocity would change for example)
Assuming my robot starts at position (0,0) and Heading... |
I have to program an autonomous robot to traverse through a grid given in the following figure.
But the main problem is that the nodes to visit is not known beforehand, it will be received by the bot in real time.
E.g.- after reaching the node 19, the bot now has to go to node 6. The shortest path(19-17-7-6) can be cal... |
I just got a Create 2 for Christmas, and while I'm planning to create with it (obviously), I'd like to use it around the house as a vacuum if at all possible. I've heard that you can buy parts for the Roomba and throw them on to this chassis, but I wanted to confirm/refute that before I bought anything. Is that possibl... |
I recently googled about Pepper robot and I wonder how one could write apps for it and get money for them. As far as I know they have app store, but does it sell apps or give them for free? (All info I googled myself is rather incomplete and old - probably outdated)
Also I believe that apps for such (or similar) robots... |
I'm hoping to move a plate (3MM x 45MM) back and forth using a DC motor. Here's my idea so far:
The motor drives a threaded shaft which is attached on one side of the plate. To help alignment, a rod is added to the other side of the plate (red). My guess is that if it's just a rod in a through hole, it could potential... |
Does anyone know of a good (low profile) way to attach the threaded (chamfered) end of a M5 screw shaft to a 30MM (30T 1M) plastic cog wheel? Would it be a good idea to widen the shaft hole and just let the threads grip the hole?
EDIT The torque will be around 6kg-cm and the plastic I'm looking at is POM.
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I have a Panasonic MSMO22F2G Servo Motor that I'm using as a stepper motor. The motor has 4 wires coming out of a port farther to the front, and 11 wires coming out of a port towards the rear of the unit (presumed to be the encoder). I am trying to drive the motor with an arduino motor shield.
My question is this, how... |
Just a short question: The iRobot Create 2 Open Interface spec says:
Serial sequence: [167] [Days] [Sun Hour] [Sun Minute] [Mon Hour] etc.
Can somebody explain to me, what "Days" stands for?
|
I have a friend who is getting into quadcopters and being the good techie buddy, I'm trying to find the right technology for battery monitoring so his expensive machine does not fall out of the sky unexpectedly.
So far the only technology for hobbyists that I am seeing is voltage monitors, which aren't really useful f... |
I've built quadruped robot which is using 12 servos (TowerPro SG90 Servo) and Raspberry Pi (model B 1). Right now I'm "feeding" it with 5V 2.5A charger.
How can I make it un-tethered? What should I look out for when selecting batteries? Also, I think that I need to separate powering of RPi and servos because power is ... |
I have a rather simple setup for my robotic extender. The DC motor turns a shaft with a worm on it. The worm connects to a small worm gear (green) which itself has a small gear (red) on the same shaft connecting to a large gear (blue):
The DC motor's gearbox gives around 50-100rpm and has a stall torque of around 2kg-... |
I just received my first hobby-grade quadcopter.
It's the Eachine racer 250 and comes preassembled with transmitter and receiver also included.
It comes with some kind of CC3D flight board, most people say it's not the original one, but can be configured with the same software.
It is actually flying very well right out... |
I'm looking at this setup:
where the POM bevel gears are fitted with some kind of metal (bronze?) tube inside which fits over the shaft. What benefits does this method provide? Is it to allow the shaft to free-spin? The metal fitting wouldn't be able to grip on the shaft - right?
Is it supposed to be a canonical appr... |
I'm now considering to choose Gazebo or SimMechanics for simulating my quadruped robot.
I set some standards for the simulation:
Support Real-time application with ROS
Simulate contact impact well(with ground) (deformable if possible)
Good rendering Quality.
I have learned Gazebo for months, and see it has some limit... |
I am building a Quadcopter and I was wondering if a 5200mAh 30C 22.2V 6S Lipo battery will work with a 40Amp Esc's, MT4108 370 KV Motors, and GEMFAN 1470 Carbon Fiber Props. The over all payload will be about 5-6 pounds.
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http://www.irobotweb.com/~/media/MainSite/PDFs/About/STEM/Create/Create_2_Wheel_Hack.pdf?la=en
Scroll to page 3.
I'm trying to interface the Roomba's preloaded navigation system with a pair of motors not attached to the roomba itself- however, to do this I need an interface board of the same dimensions as the one pictu... |
What is the most accurate way to locate the position and orientaion of the body during some motion (rotation and translation)?
I need to track the body very precisely, the required accuracy is 100-200 microns, and with rather high frequency - at least 1kHz. The body has one rotation axis. This axis can translate along ... |
I am working on an Arduino robot project. This project requires a base with 4 wheels where the back wheels are attached to two DC motors that can be controlled independently of each other. I am thinking that the robot will turn by giving power to just one of the motors but I am having trouble with how the front axis sh... |
As part of a sorting machine, I need to orient a pile of plastic brick-shaped objects (which are all identical in size - about 3cm x 2cm x 1.5cm) so that they always end up with the white side facing up:
These will then be fed into a bowl feeder type of machine for further re-orienting.
How can I accomplish this, pre... |
If a Lipo battery has more mAh will it be slower to run out of energy or will it have larger power output?
Thanks in Advance
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Are joint-state vectors $q$, which define the position and orientation of a set of joints, limited somehow?
I know they are used for the rotation part of the transformation matrix => therefore I would think they were limited within 0 and 2$\pi$
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I am using arduino mega to run 4 motors via 4 motor controllers. I am using a ps2 controller as the remote control. When the joystick is at rest, the motor should stop.
The problem is the motor still moves randomly when the joystick is at rest. Sometimes, the joystick can only produce forward motion on the motor but no... |
How can it be used to determine the transformation matrix?
an example could be at computing the inverse kinematics for small displacements:
J(q)$\Delta$q = $\Delta$u
$\Delta$U is a vector defining the difference between current and desired position. The desires position can always be computed, but if keep solving this ... |
I have just disassembled a RC car (a BBR 1:18 Scale Ferrari Enzo from 2005). Attached to the stepper motor that controls the steering of the car was a small circuit board with a cog wheel attached to it. I am trying to figure out what this circuit does. My idea is that it is responsible of keeping track of the wheels p... |
Is there any general problem in using precise positioning (centimeter-accurate GNSS RTK system meant) for autonomous car guidance given I have a predefined path the car should follow? I mean, autonomous cars were the topic #1 at CES 2016 yet no such simple system seems to have been introduced to date... Of course the "... |
I want to open a door using a DC motor. I've estimated that the required power in the worst case would be around 35-40W (considering a ~80% efficiency). The whole is controlled by a Particle Photon.
I was thinking to use a L298N to control the output of current to the motor. However, when I looked for powerful enough m... |
My application is composting with worms outdoors inside an a styrofoam cooler. I use a heat lamp and a thermo-electric cooler to maintain the temperature in the bin when the temperature outside is out of bounds for healthy worms. When the temperature outside is in bounds, I'd like to exchange the air in the bin with ... |
I am working on a project where I should perform object tracking using the camera of Parrot AR Drone 2.0. So the main idea is, a drone should be able to identify a specified colour and then follow it by keeping some distance.
I am using the cvdrone API to establish communication with the drone. This API provides functi... |
Our thesis is about Multicopter using two batteries wherein the first battery is used and when the power goes out, a switch is placed use to charge the first battery while the second battery is powering the multicopter, the process repeats again and again until all the power of the battery is drained. Is the process po... |
I'm planning to build a small (probably around 30 centimeters in diameter, at rest) hexapod robot, but, currently, it would only be able to walk on even ground. To improve this, I would have to, somehow, detect when each leg collides with the ground.
Ideally, I would be able to know how much weight each leg is support... |
I have a IMU that has 3-axis accelerator, 3-axis magnetometer, 3-axis gyroscope and row, yaw, pitch value. I want to get the location of the IMU coordinate(the beginning point is (0,0,0)) but I know just using double integration will has dead reckoning problem. And I found a lot of paper just talking about combining IM... |
I’ve made a datalog from a MPU6050 (IMU: gyroscope and accelerometer) at 500Hz sample rate. Now I want to calculate the characteristics from the gyro to evaluate the sensor.
For the gyro I’ve found following values in the datasheet:
Total RMS Noise = 0.05 °/s
Low-frequency RMS noise = 0.033 °/s
Rate Noise Spectral De... |
I have built my differential drive mobile robot in solidworks and converted that to URDF file using soliworks2urdf converter. I successfully launched and robot and simulated with tele-operation node. Since i am intended to use navigation stack in i viewed the transform of the robot in rviz which resulted as below.
As ... |
Please have a look at this youtube video.
When this mobile robot operates, the rack (which is said to weight up to 450 kg) can have its Center Of Mass (COM) distributed at any location. For example, this COM can be located 5 or 10 cm off from the center of the robot. Because of this, when the robot revolves, the center... |
I've got a project that will require my drone to perform a circle turn while the drone is always facing the tangent of the turning curve. Similiar to a car that is performing a frictionless banked turn.
Just wondering which method should i use to achieve it, the throttle control can be ignored since i already have a p... |
I want to make a drone. But my budget is very low. Brushless motors are very expensive. I want use the Brushed CHEAP ones. can i us them ?
|
Where can I find a general implementation of Canny's Roadmap Algorithm(or Silhouette Method) for Robot Motion Planning?
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Hello I am new to the field of robotics but have some knowledge of raspberry pi, arduino, python.
I want to make Robotic arm which can be used to find the centre of any disk.
There may be disk of different diameter coming one after another on conveyor.
I need to make hole at the center of disk using robotic arm. How ca... |
I am building a quadrotor with a CC3D (OpenPilot) and a RPi.
My first idea is trying to communicate the CC3D with the RPi using the main port of the first one but I can't find any information about how to communicate the board with any device (or other information about the commands or serial configuration).
Anybody k... |
I have all the specs from a quadcopter, everthing, would it be possible to figure out the pid from those specs?
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This is my first week with Gazebo. The tutorials are clear (except for my dearth of C++ knowledge) but now that I'm working to move out on my own things are getting cloudy. I made a model comprising two boxes and a revolute joint. The file one_r_test.world loads this model. A plugin is "loaded" (?) in model.sdf and... |
I would like to know how the header in this MakerBot printer moves in the vertical up /down direction. Is there a detailed explanation of it including the parts involved?
|
Good day,
I am a student currently working on an autonomous quadcopter project, specifically the stabilization part as of now. I am using a tuned propeller system and I also already considered the balancing of the quadcopter during component placements. I had been tuning the PID's of my quadcopter for the past 3 1/2 we... |
Consider the system
$$
\tag 1
H\delta x=-g
$$
where $H$ and $g$ are the Hessian and gradient of some cost function $f$ of the form $f(x)=e(x)^Te(x)$. The function $e(x)=z-\hat{z}(x)$ is an error function, $z$ is an observation (measurement) and $\hat{z}$ maps the estimated parameters to a measurement prediction.
Th... |
How do I read real time values from the GY-85 IMU sensor at Simulink connected via Arduino? Also, I intend to interact with the Virtual Reality environment at Simulink using this GY-85 IMU sensor.
Is this possible?
How do I make MATLAB read real time values from this GY-85 IMU sensor connected to Arduino via I2C commun... |
We're working on a quadcopter that will carry a solar panel on top that will continually charging the lipo battery of the quad. What's the smallest and easiest way to recreate a charger that will allow safe charging for the lipo battery?
|
I am trying to find the inverse kinematics formulation of DLR/HIT II hand. Till now I had success in finding an analytical method described in the thesis of Mavrogiannis, Christoforos I. named Grasp Synthesis Algorithms for Multifingered Robot Hands, given in appendix B.
My question is regarding the A.28 where the aut... |
I am working on building a line follower robot using ATmega2560 and I want its movement to be more precise. I am facing a very typical problem.
It consists of three(3) IR sensors. The thickness of the line to be followed is 1.2cm and the gap between the sensors is more than that, around 1.8cm.
So if the black line com... |
I've been trying to understand image rectification. Most of the time the result of image rectification is illustrated by the original image (i.e the image before rectification) and the rectified image, like this:
The original image:
The rectified image:
To me the original image makes more sense, and is more 'rectifie... |
I'm working on a little project where I have to do some simulations on a small robot.
I my case I'm using a differential-drive robot as one of the wheels of a bigger robot platform (which has two differential-drive casters), and I really do not understand how to find its kinematics in order to describe it in a model fo... |
Is it possible to speed up execution time of a c++ program in raspberry pi solely by increasing the i2c baudrate and increasing the sampling frequency of the sensors?
I have the issue of sudden jerkiness of my quadcopter and found the culprit which is the frequency at which my loop excecutes which is only about 14Hz... |
My aim is to actuate a pneumatic muscle based on signals received by EMG sensors placed on the biceps. Is there any Matlab code which can process the received EMG signals and convert them into any form which can be useful for muscle actuation?
The linked video gives better insight to my question: exoskeleton arm pneuma... |
Is the notation of the geometry of robots from Khalil and Kleinfinger be considered as one of the probably "many" Modified DH Parameters?
|
I'm working with a differential-drive robot that has odometry measurements from wheel shaft encoders and heading information from an IMU (I'm using BNO055 in IMU mode to get Euler angles, primarily the heading angle).
I'd like to use the IMU header angle to augment the odometry which is prone to slipping and other erro... |
I ask this question to clear my concept about hardware structure of humanoid autonomous fire robot, Here is scenario a fire robot detect humans from fire, there are some vision cameras some temperature and smoke sensors which help to perform this task. Now a days in market there are many processors like ARMV7 and Snapd... |
I have added hokuyo laser plug-in to mu urdf file. I successfully launched the robot in gazebo and done required changes to visualize it in rviz. I didn't get any error but the laser scan results are not published.
Fine my results below
Terminal while launching gazebo model in world
Result for rostopic echo /scan
I ... |
Can someone tell me where can I find some specifications about the iRobot Create 2 IR bump light sensors?
We have an SDF model of the Create 2 that uses the Hoyuko laser range finder sensor and we have to simulate the behavior of the IR sensors starting from the laser scan data.
Hence we would like to have some additi... |
I've taken a class and started a thesis on robotics and my reference for calculating the Jacobian by product of exponentials seems incorrect, see:
http://www.cds.caltech.edu/~murray/books/MLS/pdf/mls94-complete.pdf
Specifically the resulting Jacobian matrix for the SCARA manipulator on page 118 would have us believe th... |
What will be the best approach to get the most localization accuracy out of only an accelerometer and gyroscope?
|
i have been playing with mbed since few week ago and would like to create a test program for dcmotor speed control. im using a 24V dc motor with encoder attach.. then test,
at first i test with supplying a 5v and 3.3V from mbed to the motor. the thing work fine giving a 16 and 10rpm respectively.
later i try using 12v ... |
I am building a simple robot with two driving wheel.
I want to control the wheel rotation using a wheel encoder like this one.
Here is a code I have on Arduino to try to understand the problem I'm facing:
int count = 0;
void setup() {
Serial.begin(9600);
attachInterrupt(digitalPinToInterrupt(2), upL, RISING);
pin... |
Good day
I am currently implementing an autonomous quadcopter with stereo vision using raspberry Pi. One (Let's call this Pi_1) is responsible for stereo vision the other is responsible for motor control and trajectory planning (Pi_2). I was looking for a way to transfer a 480 element float vector via GPIO from Pi_1 to... |
I would like to know what software is available to control a timing belt with stepper motors for arduino board.Much like how its done in 3d printing.
But in this case i wont be making a 3d printer.Just one simple setup.
|
What are strategies used when trajectories, which are applied to a robotic joint, are interrupted? Say a robotic arm hits an obstacle, the controller just keeps applying the trajectory. Then at the end, the error gets so large, the torque can get quite strong and damage the robot or snap.
|
A lot of the Create 2's interior space is taken up by the brush assembly and the Aerovac bin. I'd like to take these out and put in my own stuff, but I'm concerned that the Roomba might get confused by the fact that I've unplugged these items. Is there anything special I need to do, aside from adding an appropriate a... |
I am trying to control a quadcopter using te OpenPilot CC3D board and a RaspberryPi. The main idea was first replace the signals from the RC emitter to the CC3D RC receiver for an RPi connected directly to the RC receiver inputs of the CC3D.
As far as I know the RC signals to the CC3D are PWM so the RPi should be able ... |
I was looking at these dc motors and I converted the torque to force at a meter distance and I got that two of them should be able to lift over 130 pounds, is this right? http://www.active-robots.com/high-torque-dc-servo-motor-10rpm-with-step-dir-drive There has to be some catch i am not seeing
|
I've used ROS for a while, my environment is Raspberry Pi + Ubuntu + OpenCV + ROS + C/C++. I also use several ROS packages (tf2, usb_camera, slam related, and laser scanner capture.) Also, in my projects, nodes are in multiple devices, and I'm using multiple master package for one project.
I did review some tutorials a... |
An aerial vehicle captures images of the ground using its down facing camera. From the images, multiple targets are converted from their pixel position to the camera reference frame using the pinhole camera model. Since the targets are static and there is information of the vehicle attitude and orientation, each sample... |
I am working with the CJMCU build of cleanflight on a small drone. As of now, the algorithm for altitude hold uses a first order complementary filter to combine data from the barometer and the accelerometer (after integrating the accelerations twice). However, I have noticed a considerable lag in the altitude readings ... |
I'm using the Delphi example to command my Create 2, I just adapted the demo code to Unicode (DelphiXE). I use the original iRobot USB to serial cable.
My Create 2 seemed to be responding fine to all the commands send via serial yesterday and correctly received all sensor data back this morning, until I recharged the ... |
My computer will not recognize the Serial to USB cable. I have tried it on a Mac and an HP.
Is there a driver that I need to install? If it is supposed to install automatically, it is not.
|
Before I start, I am a 13 year old, I would like to apologise because I am a beginner to all this and I wouldn't really understand any professional talk, I am only doing this for a hobby.
I am building a quadcopter,
Flight controller: KK 1.2.5
ESC: Q Brain 25amp
Frame: KK 260 / FPV 260
Frame Addon: KK/FPV 250 Long Fra... |
I am writing a code in Arduino IDE for NodeMCU Board to control a differential drive 2 wheeled robot.
I am able to steer only one direction for some reason and the steering response time is a little awkward.
Is there perhaps a better strategy for the code that I am using?`
I am using an app called Blynk that has a vir... |
I am reading SLAM for Dummies, which you can find on Google, or at this link: SLAM for Dummies - A Tutorial Approach to Simultaneous Localization and Mapping.
They do some differentiation of matrices on page 33 and I am getting different answers for the resulting Jacobian matrices.
The paper derived
$$
\left[ {\begin... |
I see that in small robots tracked chassis is implemented with 2 motors, each powering one side of the vehicle, like this:
(image stolen from here)
But in real scale tanks I assume there is only one motor so there must be some way of applying power to both sides independently.
|
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