Let's Make Robots!

Speech Recognition with BitVoicer and Arduino

The main goal of this project was to test the speech recognition performance of BitVoicer (http://www.bitsophia.com/BitVoicer.aspx). For this purpose, I designed a simple led control sketch which I integrated with BitVoicer. Of course you can do anything you want once you have received the commands from Bitvoicer, but to keep things simple, I thought a led test would do just fine.

Campus Party 2013 LMR division

Campus Party has been awesome meetup-events for LMR members, and we have often been given .. very good conditions, only we should not write about that in public, because it's a complex world of sponsors and participants and dealings.

Those who went can confirm that it is really the coolest thing to meet up and .. it cannot really be expplained, but it's really, really awesome, despite any possible trouble, it has been really, really awesome to meet each other!

Verbal Skills and NLP

I'm starting this forum for discussing verbal skills in robots including but not limited to natural language processing.  I'd like this to be a place to discuss conventional and out of the box ideas for improving verbal skills in robots.  This could involve:

Permanent Google+ hangout

We now have a permanent Google+ hangout for LMR users.

https://plus.google.com/hangouts/extras/LetsMakeRobots

What is a hangout?

Google+ hangout is a multi user video chat. Upto 10 users can join the hangout at the same time. A permanent hangout doesn't mean there is already somebody available. It just means the hangout is never ending, it is always available under the same link.

Why should I use hangout?

DARPA Robotics Challenge

Quote from IEEE Spectum:

DARPA to the robotics community: the challenge is on.

Recycling Bin with Rapid Prototyper

What if you put your PET waste into the 3D printer instead of the recycling bag?

Is that possible?

Can we outline what is nessessary to build this machine? And why it is not available yet?

Creative and Versatile Means of Robot Gripper

BotJunkie.com posted this article of a robotic gripper constructed out of a balloon filled with coffee grounds. It is activated by sucking air in and out of the balloon. It seems to work very well.

 http://www.botjunkie.com/2010/10/26/balloon-plus-coffee-grounds-equals-versatile-robot-gripper/

Discuss general guidelines for self-balancing robots

I'd like to start a discussion to collect general knowledge of what to do and what not to do when building a two-wheeled self-balancing robot (SBR for short).  My hope is that this thread can become a somewhat comprehensive set of guidelines to help beginners and non-beginners build their first balancing robot or  achieve a more stable and successful subsequent design.  Things that I would like to understand include:

Raspberry Pi offline Speech recognition?

I know a lot of the Speech controlled robots use the google api.

But I'd like a offline solution. It just has to listen for some key words like "time","temperature", ...

Would be great if someone could point me in the right direction....

Simple Audio Preamp

i found an easy to make audio preamp that i intend to use to measure a sound with an ADC input on my arduino. i want my robot to respond to me clapping and start a drumming sequence. I may have to use some aditional circuitry to turn the output to a simple high pulse when the sound goes above a certain level, this way i can use one of the arduino interrupt pins to start the sequence at any time. heres the link:

 http://www.reconnsworld.com/forum/read.php?9,10

here is someone who has used it with an avr chip

TOP SECRET [For your EYES only]

 In advance, i'd like to apologise for having some Upper-case letters in the Title, hope it isn't bothersome. 

Interrupts and wheel encoding... a beef with...

EDIT (June, 25th 2012):

The headache just doesn't go away...

Despite the photo below now I have a tube of black heatshrink shielding the sensor. It increase the analog output, for both cases (black and white). Regardless, the behaviour remains the same as without the shield when I move unto digital pins. I've been trying to deal with debouncing for the past couple of days with no luck.

// Playing with encoder digital readings

 

const int sensorPin = 7;

 

int lastColor;

int currentColor;

int count;

OK, I have just given up making a balancing robot. Ever.

Making a balancing robot - or even dreaming of making one just lost it's appeal.. because I will never make anything like this.,

Help me connect Xbee to Picaxe!

OK, so I’m going to make a remote control to my next robot. I want to connect a picaxe 28x1 to a Xbee and I have ben trying to find
some good examples but with limited success.

As the Picaxe operates at 5V, whilst the Xbee operates at 3.3V I understand that the signal from the picaxe has to be regulated. (not just the input voltage to drive the device).
Of Cause I could run both the picaxe and the Xbee at 3.3V, but that would just screw with everything else I'm gonna connect to it.