So, besides little cars and stuff like that, I was never able to really make use of them until recently-ish that I got a 3D printer and learned CAD, so it was time to categorize them.

I built a humanoid robotic arm for my latest YouTube video but nothing went according to plan. I went through my whole design process, assembly and more demos. Luckily I was able to get some nice shots of the arm in action before it broke. Here I’m using these super nice harmonic actuators and 3D printed all the parts. Stay tuned for next gen and integration with ROS!

Took almost 4 months to complete this robotic hand. The hand uses 16 N20 motors with encoders. It has 16 active DOF, each finger has 3 with thumb having 4. There are additional 5 passive DOF with each finger having 1. Since many parts are so small, 3d printing was not possible , I had to mill those using alluminium myself. Few complex alluminium parts I ordered using JLCCNC service. Hopefully I should be able to code basic movements soon and then I will try some reinforcement learning techniques etc. The size of hand is almost 1.5 times of myne. I should be able to reduce the size by 10-15%. But i am planning to replace them with smaller bldc motors and redesign, if everything works out well.

full video: https://youtu.be/477QG21PAys?si=yQRtfvW8X-yyEz3X

This is my latest project: a 6 DOF, 3d printed robotic arm built using ODrives and BLDC motors.

It’s my assumption that for quadrupeds, the lighter the better. Rev Core Hex Motors are both on hand, cheap, and really light. They’re decently strong and fast, but I will be using robotic actuators. Would it be a good idea to make the legs of my quadrupeds, something like the Boston Robotics SPOT, out of Rev Core Hex Motors?

Hey, i’m making a tails bot/doll inspired by peter knetters roommate tails, and i want to make it talk but c.ai uses wifi which i don’t have at my school (this is for science fair) so does anyone know a chatbot app that doesn’t use wifi to make tails talk? i also posted this on the sonic the hedgehog reddit.

Watch full video here: https://youtu.be/477QG21PAys?si=365CnlnEh0Qk4I5f

This is the same video but different perspective and higher quality. Clearly no CGI because the robot drops after its performance was finished and iShowSpeed comes in action. Probably part of the performance.

There are two different types of turns that 6 wheeled rovers can make. Since the middle wheels have no turning motors, of course, they cannot turn. In order for one pair of wheels to make a turn, they have to be facing the same direction. 6 Wheeled mars rovers not only have the ability to use this, but can also use the rear pair of wheels to turn the other direction in order for the rover to make an arc path. They also have the ability to make all wheels turn in order to make the rover make a zero-radius turn. My question is: Have any rovers made any ackerman turns on mars, or do they only just make zero-radius turns?

This little guy always demands to be included in everything I do, and we have been inventing a large computer-controlled LEGO robot that we have named Robert. Usually he is just happily doing something very unproductive like throwing LEGO pieces on the floor, or trying to drink my coffee. This morning, however, he was fed up with not getting undivided attention, and bit Robert in the tire and then grabbed a screwdriver to destroy him. This was a very obvious message so we just took a break, and sat down in the living room. After punishing me a little bit by trying to nibble on my toes, he is starting to close his eyes. Probably just tired after all of the "work". It is impossible to fire this little assistant, since he has learned to say: "Nice to see you" and "I love you". Therefore he gets away with anything. We have made a lot of improvements, and soon we can start thinking about making building instructions. We just have to find out how to to market them successfully, so that we can make money to go and do something fun.

For the past months I've been working on my own BLDC motors for a future robotics project. The motor is 3.8cm(1.5 in) deep and has a 9.4cm(3.7in) diameter. All parts except bearings are 3d printed! I coiled the stator myself, the motor has 43 turns per slot with 36 slots wound with single enameled wire of .4mm. The rotor has 40 poles arranged in a hallback array. My tests estimate the motor (wothout the actuator) to be about 20kv and make about 3Nmeters of force, but I'm building a better testing setup to get better numbers. The actuator in the center of the stator is a cycloidal reducer with 2 disks to counter each other's vibrant. It has a reduction of 1/7 while fitting inside the stator!

There is lots of work to be done still, but I'm very happy with my progress. I'm now working on it's cooling system and taking better measurements, I'll update as soon as I have more info!

Any suggestions are welcomed I'm not an engineer at all and I'm learning along the way.

Hello Robotics Community!

We are a student-based FTC rookie robotics team looking for new members and mentors. If you are interested, please fill out the form and contact us. We are located in Irvine, California.

What are the current limitations in hardware and electronics when it comes to advancing robotics, particularly in areas such as processing power, energy efficiency, sensor integration, actuation, and materials?

Ive seen many fast line followers like the Cartis04, and I want to build one but i dont know where to start. I dont know the components that i should choose, like the motors, SPM32, and other such components. I want the robot to be fast so its able to compete. Thanks in advance!

Hi Everyone,

We are selling Qty 3 2021 Universal Robots UR10e arms for sale with low usage and great cosmetic condition! Message me if interested!

Auction starts 04/16 on www.edispositions.com

I actually don't think it's too far fetched given the 2050 timeline and I've seen videos of people riding the unitree robots

I've been trying to approach the <3cm/km translational accuracy for a long time now. Even the latest generation MEMS IMUs like the ADIS16507-2 in Conjunction with barometer and Magnetometer cannot approach that figure.

Not even VSLAM can approach this, only LIDAR slam that costs thousands.

RTK base stations do not work from hundreds of KM away. But, what if I can have the drone land and drop a RTK module at a visually recognizable setpoint from aerial imaging, and use that as a RTK station? Would this work? Thanks.

Hello,

Does anyone have any experience with modeling a robot arm in UE5? I am setting up a photorealistic simulation, and for this purpose I would like to use any robot arm model and be able to pass in joint angles to make the robot move (with physics enabled).

So far, I have seen there are two approaches:

1. Skeletal Meshes: This seems to be the way the gamedev people usually set up a robot. I do not know much about this, but it seems alright for creating animations, don't know if I can get realistic movement (and most importantly, control in the joint space) out of this method.

2. Serial chain of Links bound by Physics Constraints: As someone coming from a robotics with ROS background, I'm keen on this approach because I can use the URDF to set up the links and then the joints are Physics constraints. I even tried using this approach, but I don't get a realistic simulation from it.

I have no experience with UE5, as such I'm struggling with setting the robot up. Looking forward to hearing from people who use UE5 to build simulations. Any help will be appreciated, thanks!

...to Make Music Videos! lol. And at 16 cents/share post-market downturn, XBOTF Realbotix stock is looking pretty good too! Plus these lifelike companion robots are the $11k popular version of the $150k Aria robot animated from the ankles up and showcased at CES 2025. They are animated from the neck up and also the only lifelike companions that are made in the USA and insulated from the Trump Tariffs.

Anyone have the pdf of this paper: A Multimodal Robotic Blackjack Dealer: Design, Implementation, and Reliability Analysis ? Any 'pdf' link just brings me to this website, which blocks it with a paywall: https://link.springer.com/chapter/10.1007/978-3-031-44981-9_24 . Looking for anyone who may have bought this already and is willing to share ! thanks