Let's Make Robots!

Arduino

Plays reels, piobreacheds and marches.
Something about getting married made me interested in my genetic cultural heritage.  According to the adoption agency, I'm about 1/4 each Scots, English and Irish … Read more
Bipedal movement, obstacle avoidance
Using a
From the start, I have admired the 3d printed bipeds named BoB. I considered buying a 3d printer of my own but I couldn't justify the expense, nor do I know a … Read more

how to implement the Wavefront algorithm

I am thinking of creating a robot that can navigate using a map it is controlled from p.c and it is having 8 bit controller to do low level task were the PC doing image processing I planned to implement it in a single room where the robot is placed and it (robot and environment) is tracked by a camera from a height or in the ceiling of the room. First the robot need to be mapped, like this http://www.societyofrobots.com/programming_wavefront.shtml

Avoid walls and obstacles.
Using a
I am building a tracked robot using Tamiya gearbox and a Tamiya trackset. I made the body out of acrylic: And i used this aluminium rod wich is M4 to fit the … Read more

Accurate Indoor Localization using OpenCV, OCR

Just got this pieced together...Robot looks around, recognizes words written on walls and determines compass bearings to each.  Robot then determines what room it is in based on its memory of visual landmarks, and loads a map for the given room.  At this point, the robot calculates its location in the room to within a few inches.  Robot then knows where other features are within the room based on its map (Doors, Windows, Obstacles).  In the video, the robot announces the heading to the door.

It acts as a theremin instrument and avoids obstacles also entertain :)
Using a
Hello to all, this is my first lmr added project, i've build robot in arduino ide, it's verry simple code, i've made this robot from scrap as you can see i found my … Read more
Moves around via control by a wii nunchuk
Using a
This is a robot I built for fun. It is designed to be a test-bed for different things I want to try. It is mostly salvaged from an earlier robot I built, except for … Read more

[SOLVED] Strange compilation error

Hi everybody!

I'm making a little robot using Arduino and it works fine (you can see how it works on the embedded video).

The robot walk alone perfectly but today I tried to use an infrared remote with an infrared receptor to use my robot like an RC car, and I had this error at compilation (I'm using IRremote library):

 

core.a(Tone.cpp.o): In function `__vector_7':

D:\Program Files\Arduino\hardware\arduino\cores\arduino/Tone.cpp:535: multiple definition of `__vector_7'

Autonomous room navigation, possible cleaning capability
Using a
I just built this little bot this morning! The shape (and code) seems excellent at keeping this bot from "getting stuck" and if I were to add a small sponge to the … Read more
This is yet another of my data loggers for my brother. He needed a low power data logger that would fit inside a 50mm acrylic pipe. So this is what I came up … Read more
This is a review of the new Official Arduino Robot. There is no doubt this robot is priced too high for what you get, yet it does have some interesting features and … Read more
Sheldon is currently in its third frame on his second microcontroller.  He started in an altoid can using picaxe and worked his way up to his current body using … Read more
Walk forword,back.left,right,balance one leg, up-down 1 or 2 leg,Turn right-left,Control With Bluetooth
Using a
My new Biped Robot "Red-Dragon V3"   what's new -Remove the camera Read more
Control a WiFi robot
Grabbed an Arduino Esplora board and decided to use it as a controller for one of my old Arduino WiShield bots. The Python script runs on a PC connected to the … Read more

Lawn mower bot

Hi all, this is my first post to Let's Make Robots so if (when) I make a mistake, please forgive me.

WhiteBOB - preview

This is WhiteBOB, my member of the BOB family. Because I have no access to a 3D-printer this robot is build from polystyrene sheets (3 and 1mm) and a piece of PVC corner strip.

Sneak preview of T'REX robot tank chassis prototype

 

Inspired by the Rip Saw tank, I have designed a new robot chassis called the T'REX tank chassis. I finally received all the parts for the prototype chassis. The entire chassis including gearboxes and tracks are all metal. The tracks have been anodized a gun metal grey colour.

Arduino Robot Review

Here at Banana Robotics, we're very lucky to have a sneak peak at the Arduino Robot. It's about 7 inches in diameter and features two separate Arduino microcontroller boards. The upper deck is the Control Board and the lower deck is the Motor Board. Each board has TinkerKit type connectors for expansion. The two boards talk to each other via a serial port.

stabilizes a camera using an accelerometer and an attiny85
As a small proof of concept (stuborness about attiny tiny core capabilities) I made a small camera stabilizer using a Attiny85 and LSM303DLHC breakout board.  To … Read more
This is MURtle my drawing robot. Inspired by Oddbots Doodle Bot competition, I decided to build my own drawing bot. MURtle is a combination of MURCS and Turtle. … Read more
Hey! Here is another guy in the BOB army! :) This time Yellow one! So, it started when I was watching photos of the BlueBOB by TinHead. My daughter saw it and … Read more

Guangzhou Science Center robot competition

As an advisor to the Guangzhou Science Center I occasionally have to go there and do some work. This time I was one of their judges for a local robot competition. There were 2 categories, non-programmable robots for younger students and programmable robots for older students. All teams received a sheet of 2mm thick heavy duty cardboard for their chassis and a kit from DAGU that included:

This is an idea I wanted to try for a while. Basically, it uses one servo to drive the main wheel and a connected (90 degree) servo to turn that servo for steering. … Read more

Just a quick question regarding battery use on a hack RC car.

Would it be a bad idea to power my robot with one battery. I would be using 5 rechargerable batteries which will give me 6-7volts or should I just power my atmega328 and maybe ultrasonic ping sensor with a 9volt batteries and the rest with the rechargerable.

Standalone atmega328

1 dc motor with L293D

1 micro servo

1 ultrasonic ping sensor

6 leds (3 sets each)

Issue with L293D

For some reason I can't get my H-bridge to turn my motor both direction. It was working a week ago when I was working on it. When I turn Input 1 High and Input 2 low it will turn the motor forward but when I turn Input 1 Low and Input 2 High and doesn't do anything. Well actually I can feel like a buzzing sound like its trying to work. I am powering the H-Bridge with it own power supply on pin 8 (Vs). Maybe something I'm missing.  I will tried adding some capacitor in to see if that help any.

navigates via ultrasound, controlled by wii nun chuck
Using a
This is a robot that can be controlled by a wii nunchuck, or it can navigate on its own. It avoids cliffs with the ultrasonic sensor on the front arm, and it avoids … Read more

Using Sabertooth 2x12 with motor and servo.

 

I have an RC car that i've stripped down to it's bare essentials.  It has one motor that provides forward/backward movement and it has a servo that turns the front wheels left/right.   I can use the Sabertooth 2x12 fine with the motor.  The problem is however the servo.