I have worked on localization and trajectory generation for little over a year as research fellow in a college and am trying to gain some experience from labs which are more focused on these topics. IT would be great if you could point me to some labs which offer research roles or suggestions to other sources from where I could work on similar topics.

I have read through probabilistic robotics for basic understanding of SLAM, implemented some of the ideas on hardware and worked on some variants of A* and RRT. What are other related topics that are used more prominently that I should be aware of.

Hello Everyone,

Do you think this mobile robot good?

Let me know your idea, thanks in advance.

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https://preview.redd.it/7bl2n2vzh2oc1.jpg?width=654&format=pjpg&auto=webp&s=4488a239a22dd76585e8e58b9c21ac22ec89e2e5

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Hi everyone. I have a big project to build a mobile robot that can climb and clear the hall ship container. However, I have a problem with calculating the torque for the motor. As you can see in this picture, Fr=545N is the thrust of the pressure nozzle. Fms1 is the friction force of the wheel. FA=2000N is a magnetic attraction. H is the distance between the hall ship and the vehicle's center of gravity. It is a 3-wheel mobile robot with 2 driving wheels and 1 multi-directional wheel ( caster wheel). So I don't know how to calculate the torque to pick the motor. Can anyone give me an idea to solve that? Thanks very much. Sorry for my bad English.

picture of dynamics robot

Not sure if this is the right place to ask this but does the epuck2 robot have volatile or non-volatile memory?

I intend to make a two-wheeled self-balancing robot. The wheels are driven independently at different speeds. It’s chassis extends upwards, so it can be thought of as an inverted pendulum on a cart.

I want to test different controllers which can steer the robot while simultaneously keeping the robot balanced in a simulation environment. I need a simulation environment where I can model this robot, actuate wheels by controlling their velocities and have the robot actually move as a result.

I have tried simulink and I cannot command the wheels independently (so I can only make the robot move backwards and forwards). Furthermore, I cannot command the velocities of the wheels (as I can only command the force applied to the wheels or their position). Pybullet is rather finicky and I can't find many projects made by others to learn from.

Any suggestions or advice will be greatly appreciated.

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Improving workplace safety

With typical 2D "Roomba" style delivery robots, we have the ability to tag areas by plotting a route task in a simple 2D mapping system. The programming is performed by driving the robot throughout the desired task route and assigning a task name, waypoints, and no-go zones. Generally, the drive mechanism is equipped with a collision and avoidance program that utilizes Lidar to trigger slight path deviations in order to avoid unwanted robotic contact. These features only aid the robot in knowing its location on the 2D map; however, they do not give the robot the ability to know exactly where it is physically located within the workplace. In a static work environment, this can be sufficient for simple repetitive tasks. However, in a public, changing, dynamic work environment, this simple 2D plotting can become a serious workplace liability due not only to the changing nature of the workplace but also to factors such as high RFI and other environmental variables that can cause frequent mislocalizations. To improve upon this technology, we need to incorporate visual markers to account for the possibilities of mislocalizations and improve route efficiency. By placing something as simple as a QR code in line of sight of the workplace robots, we can not only reinforce a no-go zone by programming an immediate drive line shutdown, but also use uniquely assigned QR codes to designate each route's progress waypoints. In most cases the only areas that remain unobstructed to a work place robot is the ceiling. This will require a scanner to be mounted on top of the robot. These QR codes can be used to call for tech assistance in the case of entering a no-go zone, as well as allowing the robot to perform a route true-up en route. These recommendations can be easily adopted to enhance work place safety.

3D navigation is certainly the long-term solution. Diligent engineers will need to design a navigation system of their own and move away from the Fetch cloud based 2D map plotting system that they currently utilize. During my brief association with Diligent back in 2022, I negotiated a unlimited lease on Leica Geosystems software, and had Leica ready to ship one of their scanners to Austin for Team Diligent to get a scan of the headquarters in order to start the process. They passed on my efforts. I think their focus was to get Moxi with all of its flaws installed in as many locations as they could. A short-term fix is urgently needed for public safety reasons. Sometimes you don’t get the fix; you get the work around. I think a quick work around would be best executed utilizing a scan able QR\Bar code over a RFID “proximity” type badge system. Shut down needs to be immediate. A simple NC relay with a manual reset wired into the power line feed activated by the roof top scanner will be the answer. This work around will not require any program changes and buy them time to develop a long term solution. I am sure that this suggestion along with my EDR recommendations will be ignored by their team of unimaginative engineers, and their solution prevention team; at least until someone gets hurt.

I built a mobile robot that can move about outside, answer spoken questions and follow spoken commands. It doesn't have arms yet. I built a web site to show other hobby robot builders how it was done. The web site is loaded with photos, parts lists and videos. https://youtu.be/W10MxWOAkIY Check out all of Zoe's videos on You-tube. [ I'm not selling anything, I am providing free information to persons that want to learn about building robots]

Hello. I need an IMU for my humanoid robot. It is about 160 cm and 65 kg and it will move autonomously. I use ROS2 Humble. The robot will make a map of the place, make localization and make obstacle avoidance. I use Raspberry Pi 4(8GB). I use YDLidar S2-Pro as lidar scanner. I am planning to use Bosch BNO055 IMU.

Is this sensor suitable for my project?

A link for Bosch BNO055 IMU:

https://ozdisan.com/optolar-ve-sensorler/sensorler/ivmeolcerler/BNO055

A link for the IMU driver:

https://github.com/flynneva/bno055

A link for my lidar's driver:
https://github.com/YDLIDAR/ydlidar_ros2_driver

If this IMU is not suitable for my project, can you suggest an IMU model?

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this shiny tube is special. it’s flexible after shrinking. i have no data on it. can anyone help?

We built an open-source (OSHWA certified) ESP32-based dev kit to learn robotics in LeetCode style (challenge and project based).

Kit is packed with sensors and peripherals (IMU, I2S speaker, microphone, 33-LED NeoPixel display, 12-LED NeoPixel LED ring, micro SD, smart power system (charge/discharge) with 18650 batteries, PCA9685 12-channel servo driver, etc) and works with C/C++, MicroPython or block programming. We are building 1,000 challenges to cover skills in embedded system, IoT, control, machine learning/AI and robotics.

If you are interested, here is the source:

• Hackaday link: https://hackaday.io/project/193061-cyocrawler-open-source-quadrupedal-robot
• Github: https://github.com/CYOBot/CYOCrawler

If you want to get it directly from us, the kit is 40% off on Kickstarter right now (2 days left): https://www.kickstarter.com/projects/cyobot/cyocrawler-building-tomorrows-innovators?ref=ap7ywx

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https://preview.redd.it/nvfoujnphq2c1.png?width=3138&format=png&auto=webp&s=49fd4e7662595f5984bb6c36ad5d1b6497b044b3

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Would you invest in an aerial-ground network product that seeks to assist in surveillance and mapping applications such as military operations, monitoring arctic conditions, and assisting less fortunate individuals in underdeveloped countries?

View Poll

Let's say you want to drive 2 brushless DC motors, each having an AS5048A position sensor. You also want to obtain data from a 9-Axis IMU, and drive these 2 motors based on that data.

I was looking at https://makerbase3d.com/product/esp32-foc/, but I don't think I can feed the IMU into this unless I try via USB.

Do you know of a solution for this? The microcontroller/ SBC to control this motor board can be anything (for sake of finding something). Also hoping to find a solution that is not, like, 200 dollars but if I have to I have to.

There's another new bot online: https://remocon.tv/d/654ecfffbea046001894e220
A mobile tank bot controlled over the internet!
Control it with W/A/S/D
If you want to make one of your own bots internet controllable then join the associated discord, I won't link it here but a number of people from this subreddit are members.

Hi there,

I'm Albert, and I'm thrilled to introduce you to our latest project. 🌌

You know, I've always been that curious kid who couldn't help but look up at the night sky and wonder about the mysteries of the universe. Back in school, I often found myself bored in class, yearning for a more exciting way to learn about STEM and electronics.

Today, I'm excited to share the result of that curiosity and drive. Together with our friends from Geek Club, we've embarked on a thrilling journey to create the DIY Perseverance Space Rover. You can explore all the exciting details right here:

But what exactly is the Space Rover, you ask? Well, picture this: a robotic explorer that's not only super cool but also incredibly educational. It's like having a piece of NASA right in your own hands, ready to roll on exciting missions.

This rover is equipped with four precision-controlled gear electromotors, six robust polypropylene wheels for conquering rugged terrains, and a meticulously crafted chassis built from genuine electronic circuit boards, ensuring a robust foundation for your adventures.

I must say, developing this rover has been the adventure of a lifetime, and I invite you to become a part of it. 🛰️

Whether you're a young explorer hungry for knowledge or a grown-up STEM enthusiast, the Space Rover is a fantastic gift that lets you delve into the mysteries of the universe while gaining valuable skills. 💫

And let me tell you, it's a hoot! Learning about electronics, coding, and all things STEM has never been this much fun. Plus, it's open-source, Arduino compatible, and highly customizable, so you can make it your own. 💡💻

https://preview.redd.it/izgdcb4kt3xb1.jpg?width=2362&format=pjpg&auto=webp&s=0be2f8b043905882ed503cccd9245280a7d9d336

https://preview.redd.it/tb2mnb4kt3xb1.jpg?width=4096&format=pjpg&auto=webp&s=41193b6c6155d647f0103a16f4534b83f31c25cb

I'm using a as5600 encoder to measure the shaft angle of a step motor and, because I have four wheels and consequently four motors, I need more I2C ports on my arduino. I tried to use the Softwire library to convert digital I/O ports to I2C entries, but it didn't work. Does anybody know how to solve this problem? Thanks in advance!

I am using 2 mdds30 for my robotics project.It is 3 Wheel drive ,I have connected 2 motors to 1st cytron and other motor to 2nd cytron .Problem is the 2nd motor does not work properly ,most of the time it gives error light and sometimes actuates itself.It had stopped working many times .I want to know if this is because I am using only 1 motor in cytron or do I have to use some other code. Any suggestions?

I hope to build a mobile robot that can improve people's lives in some way and feel very stuck deciding which problem set to go down. What are some specific problems we face as humans which robotics is solving, which are within the reach of hobbyist to solve? (I know this is terribly open-ended, lol)

To bring context, I created Desert Eye and Desert Eye 2 after the pandemic, but hope to create something more useful to humanity this time.

I'm part of a team that participates autonomous path finding competition every year (IGVC). We have a fairly high budget... for a group of students (about $2000 to $3000 can be allotted for 3d scanning). We've been looking at different solutions, and the best solutions that fit within our budget so far seem to be 3d cameras/radar since 3d lidars are very expensive. But not entirely sure what the best scanner for our budget might be.

We already have a camera for computer vision, but it does not provide 3d mapping and we would like to do as little ai as possible since it takes a lot of processing and energy. If anyone has any recommendations they would be greatly appreciated.

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(btw, the obstacles are pylons and potholes, and there is a ramp at the half way point.)

Hello.

I am planning to make a ROS2 robot with a lidar and a camera. I will need to use gazebo and rviz to visualize data coming from lidar and camera. I will use ROS2 humble in docker in ubuntu server (22.04) in Raspberypi4 and connect from my desktop by using SSH to use graphical tools in my desktop. What kind of challenges I will face while processing data of sensors? How can I deal with them? Can you recommend any resource to help me with this?

Any advice will bw appreciated. Thanks.

Hello! I’m a beginner in the world of remote controlled robotics, though I know a bit about robotics in general, and am looking for someone to help me find the electronic parts I need to make a chassis for a ~25lb robotic Dalek (from Doctor Who, at half scale). I need a chassis that can move the weight of the build (different drive with 2 powered wheels and 2 castors, or 2 wheels each side on 1 motor), 3 servo motors, and additional motor for a rotating head, as well as the necessary other parts and controller. Hopefully for under $1K CAD but willing to go higher if necessary due to the weight.

As said at the beginning, I have no experience with rc parts, but I am willing to learn! I was a part of my high schools robotics team and now go back to mentor, so I’m most familiar with FRC legal parts. Any ideas and help are really appreciated, as I don’t even know where to start with the motors 😅If there are kits that can perform the basic chassis function that I can add servos and their controllers to I am interested in those as well.

Canadian sites are appreciated but not required, just makes avoiding duty easier! I have checked out servo city but am looking for other options.