I wanted to start building robots the moment I saw the sci-fi movie classic The Day the Earth Stood Still the original, mind you, not the remake.
My initial attempt, shortly thereafter, was cobbled together from nothing more than random TV parts and scrap wire I had scrounged from my dad's electronics junk box. The machine didn't really do anything—other than get me into trouble. My father informed me that those "random" parts were actually rather pricey RCA picture tubes.
Still, it was my first robot, and your first robot is one you never forget.
Watching your creation do something as simple as scoot around the floor is exhilarating, particularly if you've built it from scratch. Companies such as Lego and Vex offer inexpensive prefab robotics kits aimed at children and educators, but you'll get far more flexibility in the long run by learning to build a true, circuits-to-servos DIY robot. Plus, it has never been cheaper or easier to put one together, and the result of your efforts will greatly exceed what was possible even five years ago.
Trust me, I've been at it for over 20 years. Best of all, robot building offers something that's increasingly rare in the world of electronics: the opportunity to create a moving, working machine with your bare hands. I've worked with Popular Mechanics to design a robot project that anyone with a bit of technical skill can complete, even if you've never built a bot before.
It's affordable, readily expandable, and a great deal of fun. Our double-decker beginner bot uses a miniature computerized brain to move across the floor, mindful of nearby obstacles. If it gently hits something or someone, the robot emits an apologetic tune, backs up, and sets off in a new direction. In terms of basic behavior, it's a bit like a Roomba self-driving vacuum cleaner.
To DIY roboticists, this style of machine is known as a roving bot. We've also designed the robot to work with almost any universal remote control, so you can manually command your robot to stop, start, and turn.
We've tried to keep it to a reasonable ambition level: It should take 2 hours or less to construct, and it doesn't require special tools. There's no circuit assembly, and only basic soldering is needed. This microcontroller serves as a small programmable computer that connects software to actual, real-world functions. Programs, or sketches in Arduino-speaktell the microcontroller what to do. You use a personal computer to create sketches, then those sketches are uploaded via USB cable to the internal memory of the microcontroller.
Sketches can do things like run motors or monitor the state of switches and sensors. We chose the Arduino microcontroller because it is designed specifically for DIY projects like ours, and because it's open-source, meaning that its hardware and software designs are open for modification and free of licensing fees.
Since it lowers the entry barrier to robotics in virtually every sense, from cost to difficulty, the Arduino is becoming something of a superstar in the world of bot builders. Software for programming the microcontroller is free to download from the official Arduino site and is relatively easy to use, because it was designed not just with programmers in mind. It runs on both PCs and Macs and includes intuitive tools that allow bot-builders to download and install ready-made programs.
The vibrant community of Arduino users has even designed super-simple, graphical-software-design apps, such as Modkit and Minibloq. These ease the learning curve not just for Arduino, but for basic programming in general. The Arduino gets wired to your robot's hardware through a breadboard.
Also known as a plugboard, this device routes electronic signals from one part of the robot to another. Breadboards make it easy to wire everything quickly and recon-figure your connections on the fly without hard-soldering everything together. It's a sort of switchboard for your robot's servos, sensors, switches, and processor.
If the Arduino is the bot's brain, this is its nervous system. Our bot uses two gear motors for propulsion, with a free-rotating caster out front. These motors are specialized versions of radio-control servos typically used for model airplanes. Instead of rotating just a few degrees, they keep turning.Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. The last step before we start putting it all together.
Bending the whiskers is quite straightforward. Use pliers and a mm length of 1. The pattern below is the one I found to work best, however it is quite interesting to experiment with different shapes. I was surprised how even small changes could drastically alter the navigational behavior of the robot. If you've made it this far and your robot is walking and avoiding obstacles then you may skip right over this step.
However if it isn't quite working or is not working at all hopefully you'll be able to find the solution to your problem here. If you have a problem not addressed mention it in the comments and I'll try to help or if you have a problem that's addressed here and have a better way to deal with it please also comment I'm afraid I haven't figured out how to do tables on Instructables so this section will be formated Problem Cause 1 Solution 1 Cause 2 Solution 2 Troubleshooting list: Left legs walk backwards when they should be walking forward.
The left motor is connected backwards. Reverse the wires from the left motor connected to connection point 'G' and connection point 'H' ie. Right legs walk backwards when they should be walking forward. When whisker is pressed relevant leg continues walking forward.
The Reverse Battery is wired backwards. Switch the wires from the Reverse Battery holder connected to connection point 'A' and connection point 'I' ie. The elastic band is too tight and not letting the switch arm swing. Use a larger or less powerful elastic band. The bolt holding the switch arm in place is too tight. Loosen the bolt holding the switch arm. In the off state when one whisker is pressed the legs begin walking.
This is unfortunately a flaw in the wiring design. If you wish to fix this add a switch on one or both of the battery boxes or remove the batteries when not in use. After hitting an obstacle one side continues walking in reverse after the obstacle has been cleared.
The Elastic band is not powerful enough to return the switch arm to its forward position. Use a stronger elastic band The bolt holding the switch arm in place is too tight.
Batteries are in but the robot does not move. Washer is not contacting the powered bolt.One of the most difficult robot is two legged walking robot. Its balancing mechanism needs a complex circuitlots of sensors, gyro, servos and mechanics. All the parts are controlled by microprocessors with complicated Firmware.
But here we have made a very simple two legged walking robot for kids. To drive the legs we have used old CD player's door opening mechanism. Mechanical structures were made from iron wires. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Video Link: Walking Robot. The circuit was powered by a small 3. Two green 3mm LEDs in series with Ohm resistors were used to make eyes.
Website: www. Otherwise can you suggest the metod to decrease rotation speed of the little motor DC?
Thanks a lot. By Saurav Chakraborty brainergiser Follow. More by the author:. Add Teacher Note. Did you make this project? Share it with us! I Made It! MatteoD13 3 years ago.How to Make a Walking Robot
Reply Upvote. Please, I need a circuit valid for regulation also of rotation speed motor if wil be too fast. LaKidd07 4 years ago.The Boson kit breaks down complicated circuits into simple, functional modules that are easy to understand.
The kit requires no coding or soldering and is ideal as a STEM classroom teaching tool. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson.
Note that the selection of cardboard should not be too hard. As shown below:. Let us first use the four pairs of screws and nuts to fix the Servo on the cardboard, pay attention to the direction of the installed Servo and the location of the hole, to ensure that the Servo bracket is able to rotate at the position of the previous hole.
Fix a pink base in the appropriate position on the cardboard. The base and the battery case can be attracted by magnetic force. The robot uses the rotation of the servo to realize the function of walking, then how will the rotation of the servo be transmitted to the body of the robot?
Need iron wire. It is bent into a roughly 90 degree shape, one end can be connected to the servo bracket, one end fixed to the body. After the connection is good, the left and right parts of the body of the robot show a certain angle. Introduction: How to Make a Walking Robot. More by the author:. Add Teacher Note. As shown below: Let us first use the four pairs of screws and nuts to fix the Servo on the cardboard, pay attention to the direction of the installed Servo and the location of the hole, to ensure that the Servo bracket is able to rotate at the position of the previous hole.
Let the robot walk! Did you make this project? Share it with us! I Made It!How to build a passive walker by PVC tubes, no battery required, I show you how to build 1 for just 8 bucks, very easy, just watch my video instruction. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. Hey can u help me make a pocket sized one. My teacher was thinking it would be great to show this.
I won't take ur idea. I was gunna ask. Project for my class Reply 10 years ago on Introduction. Reply 11 years ago on Introduction. Way cool! Once you got it started, it would "walk" down the stairs.
Make your own walking, talking, living....robot
I'm not sure if that's considered a passive walker I think that to be considered "passive", it must be powered by a natural element, not the initial momentum that you're giving it.
I'm probably wrong, though. Awesome anyhow! Reply 12 years ago on Introduction. I think that's technically right, but the motion of this thing is pretty cool, anyway. Question: are those foam pads necessary for the walking motion?
It looks like the leg-swinging motion would take each "foot" below the walking surface, which is why you can't just have this thing walking around on the ground; the step points need to be elevated.
Is that right? It actually looks as if the pivot point is moving at the same speed as the swinging arm, but I can't really tell due to the low frame rate. That's certainly a valid possibility, though. By tycoyoken Follow. More by the author:. Add Teacher Note.
Did you make this project? Share it with us! I Made It!
How to Make an OAWR (Obstacle Avoiding Walking Robot)
Reply Upvote. Nice pipe trick!In addition, building your own robot gives you a good appreciation for the kind of engineering that goes on behind the scenes with commercial robots. If nothing else, building your own robot is an easy way to find out where the gaps in your knowledge are.
The goal is just to provide a map of the world. When most people think of robots, they think of a mobile platform, but not all robots move. Mobility is not a requirement, but it does help a robot feel alive if it can explore its environment.
There are wheeled bases, which are pretty common and easy to work with. Multi-legged systems like a hexapod allow the robot to walk like an insect across rougher terrain than wheels, but are harder to implement. And, of course, there are more exotic locomotion systems, like some of the two-wheeled balancing robots and even bipedal walking robots. What kind of locomotion platform do you want? Now you have your base. With these numbers in hand, you can visit nearly any hobby website and select the appropriate motor.
What about gearboxes? No worries. Many motors come with integrated gearboxes. This is absolutely the way to go for a project like this, and the numbers quoted on websites selling these motors already take the gearboxes into account. No additional calculations necessary! Having selected a roughly appropriate motor and attached it to the platform, it definitely needs some power.
Sure, you can just throw some batteries on your robot and call it done. But what kind? How strong do they have to be to power the platform plus anything else you want to put on it? To come up with a power budget, you need to start thinking ahead. What else do you need to power? Well, you want the robot to sense its environment, so you need to figure sensors into the power budget. And being able to send photos or video is nice, so you might strap a webcam onto it.
Arms, hands, grippers, and other robot appliances are a whole other topic! Most robots use rechargeable batteries, and with the proliferation of RC cars, Lithium Polymer LiPo batteries have become affordable and effective.Putting our community first.
Important update on Covid Learn more. Start by building the body of the robot, then discover the possibilities of the four different TRACK3R tools: the bi-blade blender, the blasting bazooka, the gripping claw, and the hammer. One of the most loved robots, the standing 35 cm. A robot that can draw? Using a standard marker pen, this printer draws lines on a roll of standard calculator or cash register paper.
Want a remote controlled truck? Got it! This is one fun cool ride. You can modify the truck to make it go faster by adding gears, and you can add a custom-built trailer so the truck can be used as a transport vehicle. Designed by Marc-Andre Bazergui.
Inspired by R2D2 from StarWars, this robot can interact with you, follow you wherever you go or move around the room wherever you want — all via the IR Beacon. The EV3D4 supports a wide set of behaviors that can easily be programmed or extended in the EV3 software.
How to Make a Walking Robot
Stroke the string, slide your fingers across its fretless neck, and bend the notes using the tremolo bar to produce the most amazing guitar solos! This robot is all set to play tricks on you. Hide the red ball under the shell, use the IR Beacon to set your level, and watch the robot shuffle and hide the ball — but where? Challenge your friends to see who can find the red ball first! This is an arcade-style game that tests your reaction speed.
The robot pops up disks that you have to whack as quickly as possible using the wack-wheel hammer. Challenge your friends and see who wackedy-wacks the fastest! Place paper under the robot, position a pen in its arms, and use the EV3 remote to draw your own fanciful works of art. The robot comes preprogrammed with three different drawing modes. It tells the time. And it has an alarm function that triggers a moving, shooting vehicle to get you out of bed. Previous Putting our community first.