Let's Make Robots!

Recently Collected Posts

Fetch a beacon, Follow Me (beacon), and obstacle avoidance
Using a
Work in progress. I don't know if this will be 2 robots or one yet. My wife got me an OWI Robotic Arm kit and a DFRobot 4wd Chassis for christmas. I picked up … Read more

bluetooth com and processing language rig

These are the source files related to the setup I mentioned in CTC's post about wireless serial com.

 

Reposting info on the setup just for ref.

Alrighty, ctc, got the rig working. The setup is the following:

<ir beacon> transmitting byte sequence from 1-9

<relay station> picaxe 8m with ir receiver showing correct data in the debug window.

Transmitting the byte sequence received from ir beacon via bt to my desktop running the processing code.

Uses openCV to track and chase a coloured object
Using a
Using openCV running on a completely underpowered laptop to identify and track an object. For this proof of concept, a blue ball is tracked. I send calculated … Read more
The MSP430 is a 16 bit microcontroller line designed and produced by Texas Instruments for low power applications. A few years ago texas instruments released the … Read more
line follower using two linear neurons (controllers) PD for differential and I for speed; both with antiwindup, error filtering and simulated annealing tunning … Read more

12 DOF hexapod kit now sold by SparkFun

The 12 DOF hexapod kit from DAGU is one of the simplest hexapod kits ever! You can buy it from SparkFun here: https://www.sparkfun.com/products/11497

Quick and easy to assemble, the body only consist of 12 leg segments, 12 foam rubber feet, 12 servos and a base plate with a hole pattern that allows controllers and sensors to be easily mounted.

Navigate around via ultrasound
Using a
UPDATE - October 1, 2013 Hi all!  Mechanical changes: I changed design of a hip. Now the hip and the knee stay on one axis. And I also made leg and body … Read more
Seek light or dark (Randomly) avoid obstacles with ultrasound
Using a
I have been amazed and inspired by LMR to make robots. This is my third robot, but the first I have attempted to document on LMR. My first two were not especially … Read more
Originally this was going to be a bicycle light seeking robot, but what the heck it turned into an object avoiding trike lol.  Read more
Navigate around via ultrasound, Navigate around via Infrared, Light Seeker
Using a
This is my attempt to master different navigation sensors in one single robot, via the upload of the appropriate code. Made of two CDs, some spacers, 2x 6V DC … Read more

Arduino Nano on PCB

As I wrote in Chopstick Junior 1.0 (there you can see it in the robot) here comes the part with the Arduino Nano on a PCB.

Why I did this?

Well, it's just a try to use the Arduino Nano for other robots too. This gives me the chance to remove the MC and put it in another robot or just upgrade this one with a new Nano. But the most important is that I can connect all the servos I need directly to the board without any solering or using male-to-female cables.

Chiro! Named after the order Chiroptera, which are bats!I named it this because of the ultrasonic distance sensor. Read more
How to make world's smallest line follower robot (vibrobot) "roboRizeh" weight: 5gr     size: 19x16x10 mm by: Naghi Sotoudeh www.roborizeh.ir Read more
NanoSeeker is a very small, autonomous underwater vehicle. Almost all of the structural parts were 3D printed on a Dimension uPrint, including the propeller. It … Read more
right now all it does is avoid obstacles, but i hope to program it to have other functions.   Read more
Navigate around via ultrasound
Using a
Hello everyone First of all I would like to congratulate everyone for such an amazing community. I don't have a robotics or electonic engineering backgroung (I'm a … Read more
Price: $17.5 USD

 Collected by one member
Adafruit has added to their shop a Slip Rings with Flange. Six wires 26 AWG, gold plated rings rated max 240V @ 2A. Read more … Read more

Roz

Roz is a Bioloid-based quad walker. It has a BeagleBone Black linux single-board computer controlling it using Python. The Bioloid bus is connected to the BBB over … Read more

OB1

Introduction: OB1 is a Service Droid I bought for experimenting with at home. I am not a professional programmer so I want to experiment more with relatively … Read more

PID Tutorials for Line Following

Hey there guys. This post is outdated. Visit http://letsmakerobots.com/node/39972 for the updated tutorial.

Hello LMRians,

In this writeup, I will try to create a tutorial for tuning your robot using PID to follow a line. This tutorial won't go deep down into the details of PID and its applications but will just attempt to show how a robot can be tuned with the PID parameters to follow a line.

Hexapod Circuit Diagram & Code Problem

Hi guys. I had to make an hexapod for a school project, and I've decided to try this one http://www.webx.dk/robot-crawler/robot-crawler.htm because it meets all requirement.

Hexapod controlled by arduino+devantechSD21

Hello there,

I am working on a hexapod robot and i am trynig to controll it by using aruino + SD21 servo controller.When i am  test each servo separately ,are acting like i want but when i am connecting all of them its like most servos are not moving at all.

 

This is my code:

#include <Wire.h>

#define ADDRESS 0xC2  

 

int servo1  = 63;

int servo2  = 64;

int servo3  = 65;

int servo4  = 66;

int servo5  = 67;

int servo6  = 68;

int servo7  = 69;

Buzzes around trying to find balance of life... I mean LIGHT
Using a
Buzz - Because that’s What He Does Read more
Update: uCee is now fully running MicroPython on a custom ARM board I designed and made. Update: So I've printed the lid, and it looks much nicer now. Update: I've … Read more
Seeker 2x was my final mini-sumo robot, designed from the start to be low, fast, and aggressive. It was a "spare no expense" kind of project, and probably cost … Read more