Let's Make Robots!

a circuit to distinguish between 3 given sound clips.

hello guys I am totally new to the world of robotics but am trying to build my 1st robo. Please tell me how to make a circuit which can distinguish between 3 given sounds clips on the basis of frequency, amplitude or the sound itself prefarably without using a PIC because i dont know much programming. Thanks.
Price: $25 USD

 Collected by one member
This is the fastest legged robot commercially available, travelling at an amazing 1 foot per second! Read more
Price: $36.95 USD

 Collected by one member
This cylindrical, 2.62" x 0.98" x 0.98" gearmotor uses a brushed DC motor with extra-strong magnets and a 74.83:1 metal gearbox to deliver a lot of … Read more

DIY H-Bridge for Tamiya double motor gearbox

Newbie alert!

Hi all,

First forum post here. Go easy on me. I have not been able to find a solution to my problem in the forum, (even though a couple came close) so I´ve decided to go to the source.

Is this http://letsmakerobots.com/files/H_bridge_single_relay_DPDT.pdf a good H-Bridge to use with the Tamiya double motor gearbox? If not, can someone point me in a better direction?

My apologies if this has came up before and I have failed to find it.

Cheers,

Andrés 

LMR series of PCB's

I think that LMR should have its own series of circuit boards, with the designs open source for all LMR'ians to use. Heres a couple ideas for PCB's:

streaming video

Does anyone have any experience controlling their robot over the internet (not lan) via a webcam?

I'm trying to find some open-soruce code.  Preferabbly not C, but anything else would be managable. 

this is my last lo-tech beambot.i built is for artcraft fun. the bare bones photo vore is a very classic beam design by wilf.the sch on most website was wrong.the … Read more
This robot is a purfect bot if you want a down and dirty awsome junkbot that packs a punch. All and all the robot costs around 50$ but I am shure that that you can … Read more
Navigates with a PING))) currently. Used for experimenting with Propeller on a robotic platform
Using a
The PREP - Bot is my first robot using a Propeller Microcontroller, and my first robot post on LMR. P.R.E.P. stands for Propeller Robotic Experiment Platform. … Read more
Price: $22.95 USD

 Collected by one member
These modules allow very reliable and simple communication between microcontrollers, computers, systems, really anything with a serial port! Point to point and … Read more
Male Strip - 12 per Strip, gold flash on 2mm spacing Read more

What components for a navigation solution?

Hi All

It must be that my previous question http://letsmakerobots.com/node/28808 was wrongly phrased as I am sure there are plenty of knowledgable people here. Anyway, I will try re-phrase my question.

Could anyone be so kind as to tell me what components would make for a complete navigation module. ie. a module that knows where it is.

I am asking in terms of a small household or garden robot so GPS is probably not relevant.

Maker Faire NYC 2011 Summary

The Let's Make Robots team had a great time at Maker Faire NYC. 

LMR received two Maker Faire Editor's Choice Blue Ribbons. One from Becky Stern and one from Chris Conners

That doesn't include blue ribbons awarded to individuals who are also LMR members, like the two given to RobotGrrl!

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