How to Build a 3D Printed Robot Arm Tutorial (Arduino Based) - Part Two 

Looks really good! Can't wait to get the parts and build this.

It's amazing!!! Congrats!!! Beautiful and useful project!! I'll use with my postgraduate students!!!

Great job!! Awesome build for a simple robot. The tutorial was great too. Thanks!

Awesome project brother. Qidi on the other hand are a different story. They offered to donate a used printer to me last year as i lost mine in a hurricane. I was starting a channel to do video lessons for the local makerspace and they lead me on for over 3 months. Then one day said no. I asked them for a discount as i had donated thousands of dollars worth of arduinos and such to the makerspace . I have severe social anxiety due to ptsd from being a first responder, i have a software engineering degree i never used and found that getting back into coding and building stuff helped me so i wanted to help others and help myself at the same time as I've barely left the house in a decade and figured it would help me get over the anxiety. They crushed me and i gave up on the whole thing, they could've said no or just give me a discount or not have lead me on for so long. I was looking for a good printer and had enough to buy a crappy one or a decent xmax (i was 200 short of the retail price) and i wanted to buy proper recording gear. I ending up being soured on 3d printing for 6 months and bought a new guitar and oscilloscope instead and donated the rest. I send arduino learning kits anywhere in Canada or the US for free. I include a decent multimeter, soldering station, aalong wirh a ton of other stuff. All i ask is that the person be genuine with not having the means to get it themselves and if they dont like the hobby to let me pay postage for the dmm and soldering station as i spend over 200 on those two items alone. Ill help people if they want to learn but there are no strings attached. Seeing them sponsor people triggers me hard because of the dishonesty. Every video wouldve mentioned them and i was just looking for a discount. I respect the fact if someone said no as well. I havent solicited any companies for charity since. I spend half my disposable income on helping others. Enabling others is a better way to look at it as i dont even need to know the person's name. Being a good, honest person is no better than being a criminal these days. Being honest is more important and saying what you're thinking (while treating others in a way youd like to be treated) seems to stop the most outspoken person in their tracks if it means they have to say no to something when asked. I could see if it was in person and i put them on the spot. Qidi sent a friend their most expensive printer and he gave it a 2 minute review and threw it away. (It was too expensive to ship as i was going to buy it). Theyd rather that then to be known as caring about the community, even the ones who keep us safe at night and now suffer from illnesses that will never go away. Another creator friend threw their printer out a 2 story window in a short after an interview. He was moving and lived too far away to ship it as well. I hope they read this. Im disappointed more than anything. I still plan to purchase a printer off them as well. But anonymously with my wife's Amazon account. If you know anyone who wants to get into the hobby or would like a robot arm kit like the awesome one you shared, just email me. I have all the parts. It can go through you if you want. Ill laser engrave the acrylic too and add leds to the kit haha. Thanks for the content.

Love Beastiarum! Even better to see the models painted and played with!

Awesome Video Man. Thank you so much for making such a detailed video. Go Engineerrs Baby !!!!

printing as we speak looking forward to build this project

This is a really nice project, and I am in the process of building it. There are many such projects on RU-vid, but I've yet to see anyone who has then used the arm for a revenue-generating practical purpose.

Awesome build and tutorial! Well done! I'm looking forward to see the next project!

nicely done

amazing cant wait to build it !!! 😛

Just excellent!... Thanks. Liked... already Subscribed.

I program UR Robots at work and I have to say that your controller concept is genius. Having a scaled model that you can actively move makes so much sense. Yes, Freedrive mode is helpful, but it's so awesome to be able to move it in real time like that while also being out of the way. Really awesome project, I'd really like to build it soon.

nice moves!

BRAVISSIMO 👏👏👏👏👏👏👏

Beautiful work.. from an 'old' maker to a 'new' one! The only thing I would add, use silicone grease on all gears and moving 'sliding' components. I was planning on making a third hand for my bench like this. I may use your arm. Currently, I have a modified Inmoov arm helping out but while it looks cool, this is much more practical. Thank you for sharing this! subscription well earned! I am curious, what made you blow 3 servos? programming over limit or load issue?

Just finished building this and the only major improvement I could suggest would be to make all the clamshell pieces have locating features (pins and holes, tung and groove, etc) to make the pieces fit and stay together better.

Im new to 3D printing and this is amazing! How did you manage to screw your 3d parts in? Did you just brute force them through the holes?

Thank you for sharing this video, It looks great. Could you tell which weight it can lift?

I’m doing a similar project like this(I’m a beginner) but I have learned a solid foundation during the first semester of school. What exactly do micro controllers help with. I’ve seen tutorials using potentiometers without microcontrollers but when I try, the servos will work for short periods of time until they start stuttering, moving on their own, or not moving at all. Any ideas if a micro controller could help this or even something else?

Great project man. I have a question about the male T plug connector. what is that connector connected too, power wise?(battery, outlet, laptop supply, stand alone power supply). Thanks again for the concise videos.

Could you be fixing that you could be programming the moves? So it actually memorise the moves? And you could just lean back meanwhile the robot are doing the preprogrammed things? For example adding some more buttons. Button one: You are moving the arm direction Z, X, Y When you are not pushing the button anymore, it stops. But you could also be pushing second button for the gripper and memorise that too?

Great video! I only have one question, how many Volts and Amps do i need to use it? Have a nice day!

Your tutorials are easy to follow and the quality of the movement is great! congrats on doing this w/ only a single arduino file ha! outstanding intro for any makers w/out a ton of programming experience. i2c w/ the PCA9685 is great and scalable. I'm curious if you have any upgrade vids planned. I don't see signs of filtering the servo data in adafruit's default driver code - I imagine that could be a great technique for folks too. I'd also consider capacitors and sharing the STEP files? Eliminating glue and adding inset hex nuts to the main parts would make this extremely serviceable

Congrat! awesome project, I will do it, question: why one of the servos is hi torque 20kg? can i use only Mg 996R? and at the time to upload code from arduino, how must to be the potenciometers? what position? you showed the position of mini arm controler, and said in started position, but we can't see the position of the potenciometers. Thanx so much!

Can you please make a mini tutorial for the controller, so that I know I am doing everything right.

can I use micro servo motors for the wrist and hand instead of the normal ones

What do you think? Any odea how to add a bluetooth tx to get it wireless?

Hey creator, it’ll be a awesome idea if u made a 6+ axis robot, I might improve on this design as well

if one were to want to record positions off of the controller to create a program and run it, what would need to be added to this design?

Idk what i did, but nothing but the LED on the arduino works. It's definitely something with the wiring i did, which is just barely holding together, but everything is pluged into the correct stuff (i think)

Hey, I have a question. Is the code that is shown on video the only code you need? Or is there more to it?

Hi! I ha e build the robot same way you did. I have a problem with power distribution. If I power the robot over the servo board, nothing is working. No lights no movement. If I power it over the arduino, lights are up, but still no movement. Wiring is correct and solid. I use a 9v power source .any ideas?

will the servo's get hot?

is there a way to make the controller wirless?

Can you make a tutorial on how to model this beast?

Nice project. Can I also use an arduino Nano instead of an Arduino Uno?

If you have a gaming laptop - would be very interested to see if you could replicate Mobile Aloha style training.

do you think you can build a car with robot arms on the sides?

Hi @build Some Stuff. Nice projects and thanks for sharing. One quick question, why is the wrist potentiometer wired differently? Based on the video (5:14) the positive and ground wires are swapped compared to other potentiometers. This is different from the schematic. Would appreciate your help on this. thanks.

You use two power supplies. One for the Arduino and one for the servo controller, right? What would be their voltage and amps? Can anyone help me with this question?

Hello very well made design. I have only one question about power supply so I read 7V power supply enough but what current works well. I have two options 5A and 10A? thanks in advance

can i do this but without 3d printing? i could make it out of cardboard and spray paint it but the design needs to be changed

Bro in upcoming days can make a record and play function for this robotics arm

How much power is needed from the power supply?

hello I have been trying to build this robot but for 1-2 weeks but yet still can't find out why my servo motors don't move when I am ready to put it in the starter position I did unscrew all the parts like in the video and also screw them back on like 10 times just to find out the reason on why it won't work I am thinking it is because of the wire's they are probably miss placed on my end from either the control or from the boards can anyone help me out here I would really apricate it thank you.🙂

Can someone tell me with what he powers the robot? I have his power source but when I turned the first time, it started smoking. And we all know that electronics run with smoke and if it comes out it's not a good thing

how did you learn this stuff

can i use stm32 instead of arduino

Hello, I'm from Spain and I find all your videos very interesting. I have a 3D printer and some Ardyino parts to be able to assemble it, but I don't know how to program it. Is there a way to copy your program?

My guys doesn't care about RU-vid Meta , uplodings each week to boost your channel and hype people about projet ...; nahh he 'aint got time for that , he got to Build Some Stuff 😄

Great video, and beautiful robot! But I'm curious ... why you are using the library from Adafruit? Why not do something more straightforward with built-in Arduino functions (such as using map() to connect the inputs to the outputs)?

Great project, how come the ground and 5v on the top potentiometer are wired opposite to the other 4 ?

Could i use a higher voltage power supply like a 12 volt or would i be able to use a buck-down converter to make it 7 volt? also is wattage gonna be a issue if i do this?

you are the best

Wait how do you build the controller?

Do you have like a list of bom for all nuts and bolts used?

question, do i have to have potentiometer at a particular position when attaching to the controller body?

how are the 3 gears connected in the wrist? i have glued one gear to the gripper part but the gear doesnt potrude far enough through the side plate to mesh with the other gears if that makes sense. in part 1 that seems to be the case for you but in part 2 its no longer an issue

Can i use the same 20 kg servo that you use at the base for all the other servos(i didn't pay attention at the start and bought 4 of the 20kg servos in the description😂)? i have yet to complete the build but i am afraid that i may have to change the code and i don't know anything about programming. Also i love your videos.

Hi, I was wondering how you connected the male T plug to the power supply. Did you just directly solder it to the power supply wires?

El primer problema que tube al armarlo es la sensibilidad de los potenciómetros los cuales se me arruinaron demaciado rápido y los tenia que cambiar muchas veces, algo recomendable para esto?

One more thing, how could I make the controller have motors instead, and have a claw instead of a button, any idea on how I could do that?

I’m at the step where you have to put the button into the controller. But it seems my button has… well… prongs on the back? I can’t fit it in there, as you don’t show it in the video. The prongs make it impossible to fit in there. Do I have the wrong button? Do I bend the prongs? Does the button need a depression? Please tell me, me and my friend are so confused. 5:07 Sorry if Im being stupid, but we are new to this. We don't really have any background knowledge of electronics.

How many volts does the hand use , what battery do you raccomend ?

Thanks for this tutorial.. I have got one problem..the MG996R servo doesn’t stop after move the Controller and keeps rotating in the some direction of the potentiometer..? But the servos stops after return the controller to start position! I tried to change the code and control each servo separately but the same problem..However,the Micro servo motor works just fine and follows the potentiometer.. Can you help please.. With All Thanks 🙏🏻

Heya, I'm in the final throws of the project and I've hit a brick wall of an issue and I was wondering if there's any advice available. I've wired everything up as shown and downloaded the code to the arduino. I've powered it up with a external PSU but all the servos (appart from the gripper servo) seemingly are fluctuating about 5-10 degrees before cylcing back. I'm guessing there's electrical noise somewhere in the setup somewhere, but I'm unsure where to look! Any ideas :)

I finally got it all hooked up but i'm having an issue with the gripper.. when i push the button it will open up but when i release it it just stays open forever, any idea what could be wrong? in the serial log it prints released and pressed correctly but it just doesn't move the servo

how many volts are you supposed to give the robot? is 6 the max? also what did you use to bundle the smaller groups of wires on the controller together? mine looks like spaghetti lol

Is it posible to change positions to do a routine?

Ok so i built it but a bit of issue. My servo keeps spinning instead of stopping at a position of the potentiometer. Any help?

Hello, I made this and I’m getting shaking from my servos they are the 20kg ones the strong ones. I’m using a variable desktop power supply which should have plenty of power. Any thought on what’s causing this?

what awg wire did you use ?

the micro servo cant overcome the strength of the rubber band apparently (bought the ones in the recommendations list). It can push the hands apart just fine without it there, but gets stuck and whines when the rubber band is on

Do you use two power supplies? one for the servo controller and one for the Arduino, right? What is their voltage and amps? Can anyone help with this doubt?

hey bro i am from india & your video and explanation is very very excellent and How do I contact you?

Awesome build! But how did you power the whole arm?

how do you attach the button on the controller? just glue it ?

Hi, I'm in the process of making this project, but I'm having some issues. When I connect the controller with the arm it doesn't really work, it's like it isn't receiving the signal of the potenciometers, I've checked the wiring but I don't see any mistakes in it. I really don't know what to do anymore

hello i have been wanting to make a robotic arm but i always find it so complicating thankfully this video has been very helpful but i have no idea how he assembled the controller can someone pls share the diagram or like explain it to me

Hello i like your videos so much. Can you please share the 3d robot Design because i am so fascinate of this Model. I also want to make a Robot like this but i dint have any 3d Design.

How much it may cost at least for all those things i need?

Can someone tell me or pass me the code for the arm please

how many collective hours of printing is the robot arm and mini robot arm?

In theory can you record movements of the small arm. save the movements and later with arduino recreate the movements with big arm? (Sorry I have zero experience with this kind of stuff) BTW nice job (Y)

How can I get the story for the little arm, the controller?

I’m just a fellow 8th grader who was successfully able to make this project! I just have one query, what should we do if the servo motors just break? Could anyone help? Thank you!

can you use 12 or 5 volts

did you desgin all of this robot by yourself?

Where is the code ?

source code pls

Can I buy this off of you for $100?