Let's Make Robots!

Arduino

Best Arduino (compatible) board?

I want to make the next generation of the "Start Here"-instructions be based on Arduino instead of Picaxe.

Some will say that it was about freakin time, but so far the advantage of the Picaxe has been that I could chose a single board that "did it all": Hook up Motors, Servos, sensors and everything.

This, and the fact that the Picaxe Basic Language needs very little introduction, made it the choise - even though the Arduino series has been a lot more popular recent years.

A complete new update :) Since the old robotic arm was so terrible I decided to spend a pound or two on some acrylic and make robot arm version two, and here it is. … Read more
This is my first arduino project ever. I at first wanted to create a wireless car with a camera mount so that i can drive around the building. I started at the car … Read more

Which platform is better? Arduino or PICAXE

Hello LMR world..:) Im a complite beginner.. Im studying robotics and Automation first year.. i know ill learn this stuff in the university  but entusiasm in me doesnt let me to sit down and wait for 2 3 years..:) While i was searching for PICAXE one of ma seniors sugested to me to laern and explore PIC microcontrollers... he said ull be better prepared for universyty exams in future and can design your own development boards which is chipper and easier..

cr2cX - The long story

cr2cX was born as a robotic platform to test and experiment various concepts of the robotics field.

Because I have designed and build a robot 16 years ago I considered that it will be useful to start again and teach my kid some things. I have taken the hard way by designing and building every module and piece of software. To be able to speed the building and experiments a little, I've taken some shortcuts:

Navigate and avoids obstacles
Using a
A robotic platform far various experiments related to this field and to teach my kid some things about robotics. It's 16 years since I have build my first robot and … Read more

virtual wire and sound

hello .... i am trying to have a machine (equipe with an arduino (virtual wire library ... TX ) ) sending information over another arduino equiped with virtual wire library(RX) and pduino firmata ( the cicuit is  (resistor 10k from pwm ... to the ground) 330 ohm from pwm to the analogPin() so that i can read analog input into the pd patch ... right?????)

i think the key is how to convert the rx signal into (map, 0, 255,) ... or something like that but the question is how ???...

Camera controller for time lapse photography, flash control, external event trigger
For my second hobby, photography, I need an intervalometer to make time-lapse photography. Before building one from scratch I searched for a ready-to-use Arduino … Read more

It's Alive!

After finally getting all the parts and assembling my new uBotino board, it didn't work! So I grabbed my multimeter and began probing around to find the problem. Got my Dad to hep me since he spent his entire career in electronics. Apparently, this particular board had a couple of places where the etching didn't complete properly. Found a short on the input pin of the voltage regulator and a short on pin 14 of the motor driver.

CNC Machine V2 with RepRap Controller

I finally finished my Fireball V90 CNC build.  In May, I got the frame, and I planned to use the motors and electronics I purchased for upgrading the Valkyrie-clone CNC.  So I made some NEMA-17 to NEMA-23 adapter plates from CD-R disks, and got it all up and running.  It's running off 12V for now, with 24V planned in the future.

 

This bipedal robot is built as cheaply as possible. Hence there are no sensors, fancy servos or brackets. Height of robot: 20cm Weight of frame: 150g Weight of … Read more
Navigate around avoidance object via ultrasound sensor
Using a
Hey there, ALB-E it's a small and autonomous Arduino robot builted on iPhone package as chassis. I've used two Tamiya sport wheels linked on a two GM9 motors with … Read more
Face tracking and light up the face with its leds
Using a
The Turret Robot 2.0 is a face tracking robot. The robot lights up the face its tracking when it points the face. The turret is controlled by a software written … Read more
nothing yet, soon it might walk
Using a
A.P.O.S.T.O.L. is short for Armoured Prototype Of Systematic Takeover Of Land. It doesn't make much sense, but when me and my robotics group were thinking of a name … Read more

microcontroller choice

i have  a problem: i only have on uc, an arduino, and have to build a tx unit with some cheap ebay radio modules. does anyone have any suggestions as to a small microcontroller for this unit. it only needs 2 or 3 channels.

 

First day with Arduino

Hi all, After a long search got an Uno yesterday.. The Getting Started page in the arduino.cc website was very easy and followed the exact steps.

I went ahead did few changes in the led blink program in the example.. Got bored with the orange light (the inbuilt) one in the board. So I wanted to connect few colour leds to the digital pin and ground. I realised I may need a breadboard for this. Planning to buy one today.. Any suggestions / pages that will me help me learn more abt the Arduino and also please let me know the components I may need along with Arduino..

OPB704 Line Sensor

Intro:

I have received questions regarding the line sensor that I'm using on my mini sumo bot. Here I will post the schematic and pictures of the board. 

The OPB704:

An update to the Duemilanove
Using a
I started with the Propeller, but I've also used the PICaxe and played with AVR's and PIC's. With the release of the Arduino Uno, I thought it would be a good … Read more
navigare around via sharp ir sensor
Using a
this is a silly thing, had to make my own version of a clasic robot...... using meccano (erector) pieces, Arduino S3V3 single sided board, a pair of servos and a … Read more
I wanted to make a small Arduino robot using an original Duemilanove and the Robot Builder's Shield. But I also wanted to have a chassis plate so I can mount the … Read more

Many questions

Hi everybody. I have alot of questions and don't know how to find answers for them, so I would be very gratefull if you could tell me a precise location where to look for my answers.

So the questions are:

1. How to connect arduino severino to intellibrain board? I need to connect 3 of arduinos to one intellibrain only to send commands with coordinates so the arduinos can calculate the angles for servos to put the legs there, so i would only need to send 1 boolean to choose a leg and 3 integers to specify the coordinates.

Avoids obstacles, follow the line and solves mazes
Using a
<added basic Maze Solving video> <added wii nunchuk control video> <added line following video> Read more
Introducing Penny. She's beginning her existence as a Start Here style robot. However, she's based on an Arduino Mega. Video 1: Early testing of the servo and Sharp … Read more
Well, this is probably the simplest robot I've ever made. It is just this event's robot mounted in a old IBM box. I've built it just to serve as a testing platform … Read more

(Solved!) Low current from Arduino Output (Arduino Start Here robot)

 

EDIT: LED problem solved thanks to RobotFreak. I forgot to set the pins to output mode using the pinMode command. As RobotFreak points out, the Arduino sets all pins as inputs by default. I added a For loop to set all the pins to outputs, and everything worked great.

void setup() {
  pinMode(13, OUTPUT);  
  for (int pinindex = 0; pinindex < 14; pinindex++) {
     pinMode(pinindex, OUTPUT);  // set pins 0 to 13 as outputs
  }