/r/AskRobotics
Have questions about which motors, gears or batteries to choose? Wondering why your code doesn't work? Have questions about CAD or simulations? Looking for the perfect robotics kit to gift someone? You're in the right place!
/r/AskRobotics is for asking questions about building, troubleshooting and learning robotics.
For academic, industry and news related discussions, please visit /r/Robotics.
/r/AskRobotics
Hey I’m a kid who wants to learn how to build robots and other machines but I don’t know where to start does anyone have any recommendations on what to buy to start? I have a couple 3D printers I want to use to create my own robots and I just don’t know where to start so any recommendations thank you! I’m mainly looking at arduino but I have a price range up to $150
I have scoured the internet far and wide for resources on how to structure the interior of my robot properly, but alas, I have found little. My robot is pretty simple, just a wheeled robot that can avoid obstacles and follow lines, things like that. I'm also making it into a chatbot, but that's unrelated to my current issue.
Basically, I'm having trouble with the actual structure. How to make the frame and also make places for the motors, battery pack, raspberry pi, speaker, microphone, and the robot's screen face. Before I order the parts I'd like to have at least a loose plan for how everything will fit to ensure I have enough space. How can I ensure all the inner components are fastened correctly, and how can I make sure the wires are organized, etc?
I was watching the limx dynamics tron-1 videos (because its a cool robot) and noticed one of its 3 leg configurations and the one used when it was walking in nature just ended in a ball instead of a foot. Boston dynamic’s spot also has similar feet. So i was wondering what the advantage was in not having feet for a walking robot? (I understand spot not having feet was because its quadrupedal and doesnt need them for balance, but tron-1 is bipedal so i wanted to ask)
Hi, I've been a robotics enthusiast for about 10-12 years (since middle school lol), and am currently studying a Bachelors in Electrical and Electronics Engineering.
Now I need to pick a field of study for doing Masters/PhD course, and I'm a bit stuck. Here's the thing: I am interested in robotics in general, and not in any specific domain. The thing I like about robotics is how mechanics, software, and electronics come together, but everybody keeps telling me it's better to specialize.
Can you please advise me, given that many of you will know better than I do about the state of the industrial and academia world, what area(s) of robotics should I pursue?
I do realise that diving deeper into Electrical/Electronics seems like the obvious choice based on my prior experience. But my end goal is to be something like a Robotics Architect (if there is such a thing), so I imagine I would need other roles too.
So when I'm older i want to own a robotics company like engineering arts and want to know some advice from robotic engineers and i also want to know if getting a gaming laptop hp victus 15 to learn coding and getting a like robot spider kit is a good idea https://www.amazon.com/Freenove-Big-Hexapod-Robot-Kit-Raspberry-Pi-Balancing-Recognition-Ultrasonic/dp/B08M5DXS2P/ref=sr_1_3?crid=1IYTJPMK3RE82&dib=eyJ2IjoiMSJ9.Qs7Am4PV9iE8mP-vQ3ewyTWtHci39TPT-2JkR5Etd5X-zYmgqGo68gd5_inUfbod4x6AwBLzktXapFhgrktG2X81hgVjHhi8zeb4m13AUpX2Xd75EyLN5aGYdQzdl4-_8SOZ-LTwrWmjAwoyx-PMLH2Zy8O2FWimoSsRhPrspO4H-Sv-v4TpxBVFiITtHN92LGykyGykEPEQ8GR4V4Wttbwj5eqTcALB5fa8oAcnzJgBBBanXwKCw4_UX6VqyoSXRjS8i3Jo2K-YfBFPe08HGm9VyYsu_lh3Xjb40oZrWEU.aSzLA_MbMSgn64mZNK444WGoaGwyXbWAqSr5UXp0juY&dib_tag=se&keywords=robot+spider+kit&qid=1733261388&sprefix=robot+spider+kit%2Caps%2C255&sr=8-3 Here is the link also i just moved from London to Qatar and want to know if paying the shipping fee is worth it and what is the future of robotics like what will jobs be like? Anyways thx for reading.
I just bought a 3d printer and I’m ready to dive into robotics. I’m currently a second year cs student and I wanted to get into robotics maybe even as a career for the software side. I wanted a nice fun first project. I’m familiar with c++ and python. I would want to try and keep the parts under 100 if I could.
Hello. I am new to robotics/electronics, so PLEASE have some mercy on me…
I have FOUR 12V DC motors, each with a current rating of 0.06A.
I am trying to use TWO L298N motor drivers and trying to connect them to an Arduino MEGA 2560.
I am trying to essentially power a “robot” that will go up some stairs, weight a total of 25-30 lbs. All it needs to do is run autonomously for a total of 45 seconds in an attempt to climb 13 steps. It doesn’t need to go backwards, etc. I just need to set it down and let it do its thing. (Project for a class)
Before you suggest that I just need 2 good DC motors that can be used to rotate 2 shafts, I know that… but I’m limited in time and honestly wouldn’t have time to concoct some gear set up. Plus I already have these motors and I’m already not sure if they have enough torque for my application as it is (these particular motors have a rated torque of 6.5 kg-cm and I have a “wheel” diameter of 14 inches).
My idea was basically to connect 2 DC motors do TWO separate L298N motor drivers. Obviously there is a learning curve for me, so I focused on getting one pair of motors to work, and I successfully did that. The road block I am hitting is whether my 12V battery with the following specs will be able to provide enough power for the 4 DC motors:
And after purchasing the L298N motor drivers, a little further research kind of bursted my bubble because I didn’t realize this was out dated technology, but this is what I have on hand… so if I can make it work, then that would be great.
If I can’t, then I guess I’ll just take my loss… unless anyone has suggestions.
If my current DC motors did not have enough torque, I was planning on swapping them out for a 12V DC motor that has 70kg-cm or torque, but has a rated current of 1.6A.
Hypothetically if I did this, could this work with the battery pack I already have?
Honestly, ANY feedback would be greatly appreciated! ;( Perhaps there’s something I can order and get expedited or if anyone knows any stores I can go to in person in the Los Angeles area so I can get what I need before my deadline, but if I can make this work with what I might have on hand, that would be great…
Please go easy on me, I think I’ve way in over my head trying to make this work, I’ve been trying to figure this out for days.
This topic is pretty foreign to me so I ask-any new products or kits out there that would interest a future mechanical Engineering/Robotics major? She is 17-got a 3D printer last year for Christmas that I came here for input on and that was a huge success. Any rec's would be so appreciated!
I've looked and DeepRacer doesn't appear to be available in the UK, I can't access any of the links for DonkeyCar, and I'd far prefer this to be an "official kit" with a company that provides support than something I 3D print myself/buy from a random company on AliExpress or Amazon
I'm probably looking at a budget of around $200USD, and it's literally just to learn the basics.
Hi, I bought some of these relay switches but they are quite large. Does anyone have recommendations for good, small relay switches. I’m trying to control a 12v LED “headlight” with a GPIO pin on a Raspberry Pi.
I built a normal line follower robot using 2 ir sensors and chasis which was available online ... i want to make it faster as i am entering into a national level contest and i have 2 months of time... how do i move forward to make it really fast...
I don't quite understand why backdrivable motors are necessary for humanoid robots. I don't have much knowledge about robotics and I've spent a long time searching the internet but couldn't find an answer. Could someone explain this?
Hi,
I’m working on a robot that is made almost entirely with goBilda parts. I have a good set of plans to follow for the main part of the robot. However, I would like to add a 6 DOF robotic arm and I’m wondering if anyone has done this with goBilda stuff. Although I don’t have to keep it goBilda, I’d like to just to keep things consistent. In a perfect world, maybe someone would have already done this and they have an OnShape link share? Look for any all feedback as this will be my first robotic arm build.
Hi! I have a jimu robot that is now basically falling apart and I wanted to repurpose it by using arduino. I was thinking to do something with the sensors maybe...is it possible? And if it is...how could I do it?
I've never done something like this and I am not at all an expert, but I still wanted to try...
Thank you in advance if you help me.
I've recently made an animatronic eye mechanism, but the 9g servos I'm using are rather noisy.
Are there other methods of actuation with a similar cost that would not be as noisy? I was thinking of small stepper or bldc motors, but those are likely not as widely available, and would need a more complicated drive mechanism.
If I'm to learn online and buy tools and equipment necessary would I be able to build enough skill to make cool stuff?. I am interested in becoming one but I do not the option of commiting to a university program for years because of life stuff so was wondering if it's something that can be worked on part time whilst working and at the end actually become good at it
As the title says, what are some resources for learning about dynamics and inverse kinematics?
For context, I've completed a BA in Electrical Engineering, so I am comfortable with circuit design, programming, and basic control theory. However, I'm lacking the more mechanical engineering related knowledge for robot building.
What are some resources for learning the aforementioned subject areas? Also, is there any other subjects I should learn about?
Thanks
Service robots are rapidly transforming industries, and their applications in exhibitions are particularly exciting. A standout example is the UBTECH Autonomous Mobile Robot for Exhibition Navigation. Designed to enhance visitor experiences, this cutting-edge service robot uses advanced navigation and interaction technology to guide guests through complex exhibition layouts seamlessly.
Imagine walking into a large exhibition hall and being greeted by a robot that not only provides directions but also answers questions about exhibits, schedules, and nearby amenities. UBTECH's innovation combines precision navigation with engaging interaction, making it a perfect solution for large-scale events, museums, and trade shows.
What makes this service robot unique is its adaptability. Whether it’s adjusting to changing layouts or tailoring responses to individual visitors, the UBTECH robot represents a significant leap in customer service technology. Its autonomous mobility ensures smooth navigation, while its AI-powered capabilities deliver personalized assistance that elevates the visitor experience.
The integration of service robots like this one is shaping the future of exhibitions, making them more accessible and interactive. As we embrace these innovations, it’s exciting to imagine how they’ll continue to enhance engagement in public spaces. Have you encountered similar robots at events? Let’s discuss their potential and impact!
Hello there! I just founded my high school's robotics team. They allowed me because last year I won a prize at a very important robotics competition. Anyway I needed a raccomendation. I always used dirt cheap servos because I didn't have any money bu now we have a budget of 260 euros.(For everything. I'm sorry, our school isn't funding us and we also have to pay to stay in the class) We need at least 8 robotic actuators to build the arm and then we would need to buy the microcontrollers, transmitters, 3D printing spools and other things. Would you have any piece of advice? More on the motors; they have to be controllable with an arduino or esp32. They need to have a nice balance of torque and speed, without failing too much on precision. I've used servomotors in my past projects but I find them unusable for robotic arms that need to have good structural stability and torque. I've never any other kind of motor because I never had the possibility to buy one. Thank you all in advance for the support, if you have any other penny saving tip I will be glad to hear it!
Hey all,
Has anyone ever seen someone with a Psych BA get into a robotics Master's program? I'm interested in changing careers, but I'm also interested in human robotic intereactions and exploring that as a career path. I plan on gaining some comptia certs over the next few months.
On that note, are there any robotics-focused certs that I should work towards to showcase an understanding of robotics?
Thanks for any suggestions or info you all can provide.
Hello hello 👋 , I'm looking for a suitable Christmas present for my father, an engineer, mechanic, hobbyist, enthusiastic 3D printer user, etc. I was thinking of a kit for a robot. But I don't know what would be suitable, fun, and challenging (without frustration) for an adult. Something to tinker with, maybe even basic programming. Budget is around 50 Euros. Maybe someone has specific tips or other ideas. I'm grateful for any advice!
Hello. I am extremely new to robotics. I am trying to make a robot that ONLY moves forward. I want it to have 4 wheels, should I get a DC motor for each wheel? Because for my needs, I think 12V, 120 RPM DC motors would suffice for my needs (frame will be light, no large payload). What other electrical components would I need? I know for sure I need a battery, but how would I decide what battery to get. If I want the motors to stop rotating after a certain amount of time, what else what I need? Any help would be greatly appreciated, thank you!!!
Everyone keeps pointing at amazon to buy one but it seems like they're sold out and was wondering if anyone here has a link for said bots that is able to ship to the United States (even if one is used or broken)
My 5-year-old has asked Father Christmas for a robot for Christmas. I figure this is my chance to inspire him to explore coding and robotics, and it's something I'd love to encourage!
I'd love some advice on robot toys that have some educational aspect. It would be great to find something that could grow with him and be good quality - it could be pricier if there's potential for use for years into the future.
A bit about us:
Any ideas? I've done a bit of Googling, but it's hard to get a handle on what's out there and what's good quality.
I'm in my final year b.tech Mechatronics from India, I was planing to go to Germany for my masters in robotics and automation. But there were very few universities there offering this course so recently l've talked to a consultancy who told me to prefer USA over Germany as there are more similar courses and opportunities than Germany. But then all the courses they've shown me are just robotics and nothing much on automation(industrial) side. l've been reading and following few robotics pages here, the future doesn't seem to be great. So l've been having doubts if I'm really investing in the right place.
Will there actually be a demand for such jobs or is there any better alternatives similar to this field?? Can someone please guide me with your thoughts and suggestions on this.
So am making a project using Raspberry pi 4 4gb and arduino which would be an arm connected to a car and I'll be using ros (not sure if it's the best route cause am still learning it. am open for suggestions) and am not sure which is better Ubuntu desktop or server and which version is gonna be better for ros
Does anyone know a simple solution to synchronize audio to start playing when the servo animation starts? I’m using a mini maestro and the only thought I could come up with is to have a servo push a button to start playing audio. Any suggestions? I’m open to using arduino. Thanks!
Hey there, I'm thinking of majoring in Robotics and Control Systems. Can you help me out with some stuff?
I’m a final-year Electrical and Electronics student passionate about robotics and currently working on a robotic screwdriver arm project. The focus of my research is on path planning and torque control, and I’m exploring Model Predictive Control (MPC) and RRT* for implementation.
For hardware, I’m using a Universal Robot UR_5 with a screwdriver attached to the end effector. My goal is for the arm to detect obstacles and respond in real time while maintaining precise torque control for screwing tasks.
I’m still in the research phase and would love to connect with anyone interested in sharing insights, offering mentorship, or potentially collaborating. Whether it’s expertise in MPC, RRT*, or real-time control, I’d greatly appreciate your input!
Feel free to DM or comment if you're interested in discussing ideas or working together. Thanks in advance!
I'm doing the electrical design for an automation cell with a Kuka robot and I'm getting a bit frustrated. Hoping someone here knows more than I do.
My customer wants to use a Kuka KR 10 R900-2 manipulator with a KR C5 Micro controller. In the technical data for the controller it says that it has a rated connected load of 1.3kVA at 200 - 240 VAC. I'll be supplying 208V 3ph, so the controller will require about 4A. That seems small to me.
I've looked through the documentation for the manipulator to see its rated load, because I figure that will either confirm that 4A is all I need or it will highlight that there's a problem. I can't find an electrical rating for the manipulator anywhere in the manual.
This is my first time doing design for a Kuka robot - my time is all on Fanuc and ABB.
Is there someone familiar with the Kuka KR C5 controller or the KR Agilus series manipulator that can help me sort this out?
Thanks.