Let's Make Robots! | RobotShop


drives around with wasd or gamepad control
Scrapsberry Sucker is my second robot project. It's been a long while in the making, and the aim is to create a self-navigating mini-hoover robot. However, during … Read more

OpenNI & Kinect error "no devices connected.... waiting for devices to be connected"

Dear: LMR

Just to let you know I am trying to use a kinect sensor with openni and slam but am running into a few problems. I keep running into this error "No devices connected.... waiting for devices to be connected" inside my terminal. I've tried using freenect_launch, I've tried installing KinectSensor-unstable repair files, and I've tried different methods like using openni2 and nothing is different. Here's what my terminal shows when I put in "roslaunch openni_launch openni.launch" into the terminal after pressing enter.

I just received my OSLRF laser Range Finder!

So I received this awesome package in the mail yesterday from LightWare Optoelectronics in South Africa.

GY-521 and motion in a straight line

Hello all

I have a few questions about using GY-521 MPU-6050 gyro. If you have experience - please, help. 

1) Different sources indicate different allowable voltage - 3.3V or 3.3 / 5V. Can I use it with my 5V Arduino?

2) Is GY-521 enought for motion in a straight line of such platforms as dagu 4wd/6wd wild thumper?

Many thanks in advance.




Semi-Autonomous Roaming - Data Collection
Using a
Robbie-Robot (Have to change that name!) is basically "intended" to be a mostly autonomous rover using a Raspberry PI for processing sensor data from the arduinos, … Read more
  This Robot is based on home-made Aluminium chassis. The size is 40cm x 30cm x 4cm. This Robot has the following: Read more

arduino and SLAM


I am developing a robot platform for children for educational purposes. My aim is to build a sub 100$ bot with arduino brains. I myself is a good programmer, and if I were to do it for myself, I would use an ARM or a better platform, but I have to constraint this project with arduino.

I have already designed some parts, and I have access to a 3d printer, so it is going all well. I already have a servo/sharp IR sensor scanner, and currently I am using a tamiya tracked vehicle for platform.

CURRENT PROJECT WORK (Most recent first)   August 19, 2011 More body work, cutting and filing...and thinking about where to place the boards... Cutting an … Read more

Slightly more advanced LDR eye

Read this history first, if you have an hour to kill.

The challenge: make your bot rove around your house. Use no active beacons. Use observations by your bot only. Now, does your bot know where it is?

One possible answer: an eye and a brain.

Room Recognition

Each room in the house has a unique lighting situation. A simple eye that looks around in eight directions would "see" a pattern of light and dark segments. Each cell is connected to one ADC on your uC.

LDR Cyclops - holding, scanning, seeking, recalling

Continuation from here.

Video straight from the camera to Youtube (Sorry Oddbot).


 Continued here.

Rudimentary LDR eye

Old idea rekindled

This idea about very basic robot vision haunted me ever since I first saw AmandaLDR. Even before it was named after a canine. It's somewhat inspired by the evolution of the first eyes in nature: just a bunch of light sensitive cells on your rump.