0
votes
1answer
8 views

How can I send a jpeg image to a microcontroller via USART?

How can I send a jpeg image to a microcontroller via USART?
0
votes
2answers
12 views

2 Wheeled , 2 motor robot control

i decided to work on a 2 wheeled robot position mapping problem .I have of course for that 2 DC motors with encoders from pololu. I have the following two questions: 1.Do i need to know the model ...
1
vote
1answer
5 views

Creating an xbox remote that replaces spectrum dx3c or dx3e without wifi

Hello I'm a new rc enthusiast, Is anyone interested in rc's controlled through xbox remotes? The project is to use an xbox one or xbox 360 remote to either hijack a dx3e or dx3c remote or create a ...
0
votes
1answer
17 views

HXT 900 Arduino Sweep Problem

I tried to implement the Arduino 'Sweep' program using an Arduino UNO with an HXT900, but the problem I was facing was that the servos wouldn't turn at all or would turn at wrong directions and ...
0
votes
1answer
19 views

Rocker bogie suspension system - pitch angle

What does this sentence mean : "The chassis maintains the average pitch angle of both rockers." Put in other words, " the pitching angle of the chassis is the average of the pitch angles of the two ...
0
votes
2answers
24 views

How to run custom hardware from a laptop

I am looking to build some custom hardware (nothing too fancy, just some motors, cameras and the like), and I need it to be controlled by my laptop (its going to have to do a non-trivial amount of ...
0
votes
1answer
14 views

what is the price of Pioneer P3DX

I wanna know how much does Pioneer P3DX cost? nothing mentioned in the website and I don't want to fill out the form regarding this matter.
0
votes
0answers
7 views

yocto -emulating pandaboard on qemu?

I am not an expert in embedded systems and all, but everything is going nice.... I have ordered a Pandaboard ES, and it is being shipped. In the mean time, I made a kernel for the machine using ...
0
votes
1answer
12 views

How to connect HC-sr04 ultrasonic sensor to APM 2.6?

I am working on my final project by autonomous Quadcopter. my tasks are to make a quadcopter which should do object avoidance and it should auto land using ultrasonic sensors. any possible ans to it, ...
2
votes
1answer
34 views

Is there a name for the steering style/wheel actuation used on Curiosity?

I read up on the wheels of Curiosity, and also about the suspension. But is there a name for the steering? It looks similar in nature to the front landing gear on an airplane, but searching those ...
0
votes
2answers
79 views

help for robotics interview

I am studying electronics engineering. I am fond of robots since my childhood. I have small doubt i.e. if I want to get placed in robotics and automation based company ,what should I study(reference ...
0
votes
0answers
10 views

Battle robot weight tolerance

I would greatly appreciate if someone who knows could let me know whether battle robots that fall within a category (for instance 12 lb / 5.44 Kg Hobby-weight) are allowed any sort of tolerance on the ...
0
votes
2answers
18 views

Single Touch Based Sensor and Odometry SLAM in Noisy Rectilinear Enviroment

A Co-worker said he remembered a 2011(ish) ICRA (ish) paper which used just a touch/bump sensor and odometry to do SLAM. I can't find it - I've paged thru the ICRA and IROS agendas and paper ...
0
votes
1answer
12 views

beaglebone black doesn't autoboot when powered over jack or vdd pins

I have a BBB and it works quite well however when I power it over the Barrel connector or over the vdd pins rather then use the usb connection it doesn't automatically boot. When I put the barrel ...
0
votes
0answers
12 views

Relative frame calculation

what's the quickest way to calculate a relative coordinate of a frame, as shown in the code below. The Kuka robot language this ":" is referred to as the geometric operator. I would like to perform ...
1
vote
4answers
34 views

Fuses for mechanical systems

** If there's a better stack exchange site for this, let me know--the mechanical engineering one is closed so I'm not sure where else is appropriate ** Do mechanical systems have fuses? In an ...
2
votes
1answer
13 views

role of chi2 in SLAM back-end optimization

All-most all SLAM back-end implementation compute chi2 estimates. Chi2 computation is usually used to compute the best-fitness score of model to the data. How it is related to optimization framework ...
0
votes
1answer
42 views

How do you design Quadcopter PID algorithm?

Just to give a bit a context, here are the equations I'm using for the Angular accelerations. φ** =(1/Jx)τφ and θ** =(1/Jy)τθ So my plant gains would be φ**/τφ =(1/Jx) along x axis and θ**/τθ ...
1
vote
1answer
41 views

Ways of reversing motor direction easily

My set up consists of a brushed motor (ex cordless drill type) connected to a motor controller which is in turn connected to a LIPO battery and an r/c receiver. All my cables are fitted with XT 60 ...
0
votes
0answers
21 views

Quadcopter multiple ESC angles glitch

I'm developing my fligth controller board on Tiva Launchpad for quadcoper and while calibrating PID I discovered an unexpected behaviour: sometimes quadcopter seems to experience random angle errors. ...
0
votes
0answers
12 views

How to stabilize color sensor for VEX IQ?

I am using Vex to build a robot with a color sensor, but the color sensor (12 colour mode) is very unstable. For example, when I was debugging my program with a touch led, it flashed colors ...
1
vote
3answers
46 views

How to provide power to a robot/raspberry pi?

I'm building a robot and powering it with a Raspberry Pi. I am looking at this battery pack, but I am flexible with which one to use. My problem is that I need to be able to charge the robot while it ...
2
votes
1answer
24 views

Choosing a WiFi antenna for outdoor robot

A time has come for my robot to get some more permanent computer than my laptop balanced on top of it. I have selected a mini itx board that can be powered directly from battery and some components ...
0
votes
2answers
35 views

differential robot yaw estimation using kalman filter

Hello i am building a differential drive robot which is equipped with quadrature encoders on both of the motors. My aim is to be able to predict the heading (yaw angle) of the robot using a kalman ...
1
vote
1answer
53 views

How does a two-gear pull-back car toy work?

This is not a robotics question, but this Stack Exchange is the closest I could find to mechanical engineering. Please refer me to a better place to ask this, if one exists. Hopefully someone might ...
1
vote
1answer
19 views

Grid mapping probability calculation algorithmic complexity

I have stumbled upon an equation (http://i.stack.imgur.com/hv64E.png), where the probability of an occupancy grid map cell is calculated. My teacher insists that it's possible to approximate the ...
0
votes
2answers
21 views

Sensor that will produce a sinusoid phase locked to a high RPM Shaft

Is there a sensor that will produce a sinusoidal signal phase locked to a high RPM (7000 RPM) shaft? I am attempting to build a coaxial helicopter based on the architecture described in this paper ...
-1
votes
1answer
14 views

Choice Of Microcontroller , Atmega 8 or Atmega 16 or Atmega 32 or any other

I am building a Line follower. Which mcu should I use? Answer in terms of ease of programming and cost.
1
vote
3answers
47 views

Particle filter weight function

I am trying to implement a particle filter in MATLAB to filter a robot's movement in 2D but I'm stuck at the weight function. My robot is detected by a camera via two points, so a single measure is a ...
2
votes
3answers
39 views

Tracking Landspeed Underwater

I am hoping someone might be able to nudge me in the right direction (apologies for the long post but wanted to get all the information I have gained so far down. Basically I am after a solution to ...
2
votes
0answers
35 views

Comparing LQR and PID controllers for inverted pendulum problem

As far as i can tell, both LQR and PID controllers can both be applied to the cart-pole (inverted pendulum) problem. What are the pros/cons to using one controller over the other for this particular ...
1
vote
1answer
24 views

How do I control a servo using a beaglebone black running ubuntu

I have a BeagleBoneBlack and would like to use it to control a servo for my robot. I'm mostly programming in ros and as such am looking preferably for a c++ solution. Is there an easy way of ...
-1
votes
1answer
42 views

The ide using for programming the Atlas robots

https://www.youtube.com/watch?v=27HkxMo6qK0 the new video of the Atlas robot is out so I'm curious about the IDE with witch they are coding this thing.
-2
votes
1answer
46 views

Can ReplicatorG or MatterControl drive a RepRap RAMBo motherboard? [closed]

I'm fairly new to 3D printing. I'm considering motherboards I might use to control my printer. I'm hoping to find a board that I can easily control using either: ReplicatorG MatterControl I like ...
2
votes
1answer
39 views

State space and control space

I would like to know the difference between state space and control space in relation to motion planning. I would like a simpler explanation.
3
votes
1answer
35 views

Difference between kinematic, dynamic and differential constraints

I would like to know the simple difference between kinematic, dynamic and differential constraints in robotic motion planning.
-1
votes
0answers
25 views

cnc airbrush arduino control code

I seek C code or arduino code to control the variation of the line width of a CNC airbrush in such a way that it traces the outline with a thin line and filling the pattern is made with thick line ...
0
votes
2answers
52 views

Eliminating Electrical Noise from my motor driver

Background: I am using an Arduino Mega connected to a RoboClaw 2x60A motor driver. I asked this question about the system, but I have since narrowed the scope of the problem. I tried adding a bunch ...
0
votes
1answer
36 views

Mobile Camera Calibration and rectification frame rate

I've been searching the internet for an answer to this question, but I haven't come across anything that will help me. Basically, we have a Meka Humanoid Robot in our lab, which has a shell head in ...
0
votes
0answers
20 views

Connecting PC and PI over celluar network

I was thinking of making an interface to control a quad using some kind of wireless connection, since the main problem (as I see it now) is the distance, I was thinking about connecting to it using ...
0
votes
0answers
12 views

Programmable Power Strip [migrated]

I am developing a system that requires I cycle on/off the power-state of each outlet in a power-strip. Does anyone know of a solution that uses either USB or a direct serial-interface to accomplish ...
0
votes
0answers
15 views

Controlled flow of a viscous fluid on a substrate

For my final year project, I want to generate an uniform layer of a viscous ink on a substrate. Basically it is a XY plotter fitted with this fluid-flow mechanism. For this purpose I tried filling up ...
0
votes
2answers
52 views

Robotics advice needed

For a high school project I will be building a robot that will draw an image on a whiteboard for you based on what instructions you give. To accomplish this a motor will move the pen on each axis ...
1
vote
1answer
38 views

PCB making at home [closed]

I've made many PCBs at home but still there are some mistakes. I tried ironing, drawing methods but it doesn't work very well. I use eagle CAD for design PCBs. Please help me.
6
votes
1answer
76 views

Can a Jacobian be used to determine required joint angles for end effector velocity/position?

I'm in the early stages of working with a simple robot arm, and learning about the Jacobian and inverse kinematics. From my understanding, the Jacobian can be used to determine the linear and angular ...
1
vote
2answers
38 views

ros send message on startup doesn't seem to work

I have the following code: ...
1
vote
1answer
33 views

Basic programming in arducopter

I am starting with a project using Arducopter. I am a person familiar with arduino, but seeing the arducopter for the first time. Commands codes and everything is completly different compared to ...
2
votes
4answers
86 views

How to combine an accelerometer and a gyroscope to find robot location and orientation in 2D/3D space [duplicate]

I have data from an accelerometer that measures X,Y,Z acceleration and data from a gyroscope that measure pitch, roll and yaw. How would I combine this data to find robot location and orientation in ...
1
vote
0answers
13 views

How can I improve the range of an XBee S6B?

Has anyone used the XBee WiFI modules? Done a range check on them? With my laptop i get a range of around 400m on industrial level Accesspoints on a football field, well how good are these devices ? ...
1
vote
1answer
41 views

How do I achieve this? Grid of dowels powered by piston-like movement

I am completely new to this site and robotics, but I have experience in programming, and programming microcontrollers. I would like to create a grid of "pixels", where each "pixel" is a metal or ...

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