Let's Make Robots!


Drifting around and avoid collisions via ultrasound
Using a
Drifter is based on a cheap RC toy car I found at Toys'r'us, named 'Fast lane Monster Drift'.  I think it's the same model Frits has been used in an episode … Read more

[SOLVED] Burning bootloader to Arduino Nano from Dagu Red Spider via circuting

So I recently got an arduino nano, but it came without a bootloader. I am trying to burn the bootloader by using the only other board I have, which is a Dagu Red Spider. By looking at the schematics, I figured out MSIO was on pin 22, MOSI was on pin 21, SCK on pin 20, and SS on 19. I connected those to the Nano's pins 12, 11, 13, and reset, respectively. Unfortunately, it still gives me "avrdude: stk500_getsync(): not in sync: resp=0x00" error.

Can anyone offer me any suggestions?

MARS ROVER Autonomous Desert Roving Robot (Help Needed)

Autonomous Navigation Requirements

Guy's I'm completely new to this and just ordered my first prototype kit with the following components as a starting point.

1. Arduino UNO Rev3

2. Dagu Rover 5 4wd

3. Parallax PING

4. Motor shield kit

I saw a tutorial that Ro-Bot-X did on controlling a robot with homemade IR Sensors so i decided to try it.  I am using two 38KHz IR Reveivers from RadioShack and … Read more

Dagu Rover 5 2WD + 2Encoders + PCB + Arduino Mega + Pan & Tilt with IR

Hi All, As a complete novice at this I thought it would be a great idea to get a Dagu Rover 5 with the addons for the kids at school and start up a club to program it. How wrong I was! I am in need of some serious help guys... I've managed to plug everything in, the 2 motors and encoders on the underside of the PCB board and have chosen not to use the 6xAA battery pack (9V) in favour of a single 9V battery (fits better under the PCB with all the cables). Problem number 1 is this: I think I am plugging in the black and red cables into the PCB in the correct locations - on the top

Low-power remote power-independent (solar charged) sensor node!

Well, for a while now I've been entertaining the idea of building a remote sensor node to keep track/record of my indoors "balcony orchard".

This project here will be my starting point, a Low-Power Wireless Sensor Node where most of the work is already cut out for me.

It's power consumptions are reported to be:

Sleep Consumption 0.14 mA

Web controllable mobile platform for webcam mounted on pan/tilt turret
Using a
This is my first robot project though I have been working with Microcontrollers and Embedded Linux for a little while. As of writing (3/1/13) this is still very … Read more
autonomouse navigation
Using a
I managed to finish my first robot on witch I spent a lot of time, mostly because a lot of stuff was new to me. It is not very complicated but it seems to do it's … Read more

RFBees and AVR Watchdog Timers...bark!

In my last post I mentioned using RFBees for a communications link between a remote sensor and a laptop PC. During my testing, the RFBees would become unresponsive at random intervals for some reason.

Cant get my processing sketch to wait for a response from the arduino

sorry if im getting boring. i promise i will get onto a rock crawler rover thing once i have got some life out of the polargraph...

Saying HI again. Still here building bots...

Hello again!

It has been ages since I have been on LMR and I missed you guys something fierce! :-)

I have just built another "generic" Arduino based bot (it WAS NOT fun getting the driver to install in Windows 8!!!)

(I will try and get a picture and more details up when I can, but basically it uses a Arduino Uno, a servo/Sharp rangefinder combo and a L293D bridge chip to control 2 very low power motors driving the wheels in differential form. Like I said, pretty generic.)

use mains AC as a switch for arduino?

hey gang, does anyone know if it's possible to use mains AC as a switch for the 'duino?

A little background:

Calculon is working on a project that he hopes will take advantage of his doorbell's AC power. He wants the old-school analog doorbell switch to activate a function on his arduino instead of firing off a solenoid in the door chime. Is this possible with some sort of voltage divider? He doesn't need to measure the current, voltage, phase, or anything liek that, he just needs to sense on/off like a pushbutton. He assumes the initial doorbell voltage will be 120V.

This would be the most advanced robot I have ever done. It's a humanoid robot based on arduino mega 2560. I created several functions like the attack mode which … Read more

Picaxe as an I/O expander for Arduino

As I was thinking of new features for my robot, I realised how painfully short I was on pins! The Arduino Mini just doesn't have enough! I'm not thinking of upgrading to a Mega, seeing how pricey it is and also because it's pretty huge. That's when I though of I/O expanders. Unfortunately, most are designed to be shields for anything but the Arduino Mini, so, again, I didn't know what to do. That's when I thought of using a Picaxe for expanding! I'm thinking of using a PWM or an analog pin from the Arduino as an output to a Picaxe input pin.

Navigate around via ultrasound
This is my first robot, it simply avoids obstacles by using an ultrasonic sensor. It uses an Arduino as its brain, a pair of DC motors for locomotion and a small … Read more
Remote Controlled Robot, Navigate around via ultrasound
Using a
After some weeks of browsing this website, I felt inspired to built something, so, here is the first robot that I'm currently working on. The idea of this project … Read more



Has anyone tried using These LCDs with an arduino? I'm not sure whether they're HDD44780 compatible or not, and I can't seem to find much of a datasheet.

Thanks in advance.

Solves Just About Any Maze (When Completed)
Update: My robot placed 4th in the touch sensor maze at the National Robotics Challenge, and was nominated for the Honda Inovation award as well! The next step for … Read more

Controlling servos using processing and standard firmata

I am working on a biped robot that I am running using Processing and servo firmata on an arduino uno.  This works fine and I have a decent walking gait.  I would like to include an accelerometer into the robot to give the robot more stability.  So I decided to switch over to standard firmata on the arduino so I can use the i/o.  The problem is that with the standard firmata none of the servos work eventhough the servo library is still included in the standard firmata.  

Thats an interesting an captivating slideshow of some pics captured during programming a RGB LED to glow in different shades through Arduino... Read more
So a while back I splashed a little cash on Kickstarter. I hadn't seen or heard of any Arduino's that were as small as the Digispark and I thought it'd be … Read more
Navigate around via ultrasound.
Using a
  This post is just one of the first steps of my build. I have made my robot's housing ready for powdercoating.             UPDATE 15-2-2013 Servo's arrived … Read more

Car alarm remote control repurposing

A while ago, I got hold of a car alarm unit and its two remote control fobs. When i hooked it up to 12V I realized that it didn’t  work, not responding to any of the commands from the two fobs even though their batteries were OK. Naturally, I opened up the unit to start harvesting parts and noticed the RF module within (the one that sticks out perpendicularly) and I figured it shouldn’t be too hard to use the module with an Arduino.

RGB LED Glows in 7 different shades.
7 different shades of RGB LED.. Enjoy watching it.. And the URL that I have provided abive is for watching a slideshow of some pics captured during programming a … Read more

Cant find a tutorial !

Hi everyone,

Recently I came across some very good hexapods designed with 6,8 and even 12 servos.I have a duemilanove and would like to build one.

But unfortunately I have not ventured into this domain and my search for a step by step tutorial on google(on multilegged critters like hexapod) and instructables proved futile.Any Links that can help me get started or rather a complete tutorial link would be awesome.Thanks!

Pick things up . Manual control using Nunchuck
Using a
I found some micro servos lying around and thought of making this robotic arm. I had some broken blinds and got the bracket to use for the servos and some scrap … Read more