Let's Make Robots!

mouse

Hello everybody, Here is my last robot. The first one I post on LMR. I've been on LMR for quite a long time but never really posted anything. So it's time to … Read more
Scurry around under IR or iPhone Control
Using a
I've been wanting to build a simple "Mouse Bot" but one without ANYTHING sticking outside the main body for awhile. Something that LOOKED just like a regular mouse … Read more
Navigates via sound (as a contact switch) or IR for obstacle avoidance
Using a
A while back, JAX and I got to chatting about our first robots.  Mine was a "Movit Peppy Mouse:" Read more
It drives around fast!
This is my computer mouse. it is made out of a double a battery pack a computer mouse to motors and hard-core wire and a paperclip and led fun to build work in … Read more
navigates a maze with feelers that reverses the opposing motor
Hi all Thanks for letting me join your site Here is a bot that I designed for the scouts to build it was designed as a maze runner. This one was built by my … Read more

Devices not used to their full potential

It seems to me some very cheap devices are not used to their full potential in robotics. Currently I am focused on optical mice. There are tutorials on the web and even an easy to use PS2 library for Arduino but I never see a robot on LMR using them.

I am currently experimenting with a cheap PS2 optical mouse as a high resolution quadrature encoder. With a resolution of 800 DPI, I can get an accuracy of 3600 counts per revolution (1/10th of a degree) by having the sensor mounted near the outer edge of a disc about 40mm in diameter.

Avoiding obstacles, chasing light
Using a
Inspired by many other mouse bots I want to build my own one. Some parts are already collected and ready to being used. The bot should follow the light, detecting … Read more
run into things
Another Junkbot, this time from a dead PS2 mouse. Knocked out in a couple hours from parts that were already on hand. Its main purpose in life is to entertain my … Read more
I've started on my own version of the Herbie-stlye mousebot. They are so simple and fun, I couldn't resist. So far I have the basic circuit breadboarded and … Read more
Feels walls with paperclip whiskers
Using a
10/19/08  I got tired of waiting for my Arduino to "process" and ship.  It's been almost two weeks (apparently it's getting here tomorrow), and I'm just too damn … Read more

optical mouse as a sensor

I need help in using an optical mouse as a sensor for my mini-sumo. i read from some place that it could be used to let the robot know that it is slowing down and will react to it. Does anyone know how i could use a mouse to do this?