Let's Make Robots!

Device signature 0x000000 while burning bootloader


So I bought 7 Atmega328's and burned bootloader's into 5 of them.However for 2 of them I get the following error:

avrdude: Device signature = 0x000000
avrdude: Yikes!  Invalid device signature.
         Double check connections and try again, or use -F to override
         this check.

I'm using Arduino Duemilanove as ISP and got the com settings,board selection and programmer settings correct.

MDIBs - Metadata Driven Internet Brains

I'm always asking myself, "What is logical for how to build a smarter bot with today's tech and the tech soon to come?"  

Max did it!!

he final broke the SB with MR speedo,:


Help with Beaglebone Black balancing robot

Hello everyone, I want to start by saying this question post might become long and I hope you guys hang on and are able to help me. So here we go :)

First of all the robot is barely able to balance. Here is a video of the robot trying to balance. The problem seems to be that the robot is not able to reach the setpoint fast enough. This is a speculation so you guys give me your ideas on what the problem is also.

picaxe and Sparkfun COM-11644

I am trying to get a Sparkfun COM-11644 working using a serial connection from a Picaxe 08m2.  I have tried every combination of 08m2 pins and commands and the display responds to nothing.

The connections from the 08m2 are Vcc, Gnd and c.4 as the serial pin.  I also have this post on the Picaxe forum and have gotten several replies all of which I have tried with no success and I have sent an email to Sparkfun technical support (no response yet).

The current code is here:

#picaxe 08m2


#com 3

setfreq m8



Right now I'm not really concerned with understanding the sound, but more with localizing it so I can point the bot's head at the speaker.

I was thinking of two cheap microphones with something behind them that would absorb sound. Then I could just focus on anything I could hear with both mikes and point the head until the sound is the loudest in both ears. If the sound is directly behind the bot, it should be possible to determine this by a very small microphone in the rear of the head.

Has anybody used a scheme like this?

Get $10 Back for 3D Printer DIY Kit For Reprap Prusa Mendel i3

ICStation is into the 3D printer market now. And the first DIY kits is online for sell. We had provided with detailed installation info and debugging tips for learner/ hobbyists.

My Teen/YA Science Fiction Books


 New release !!!

Book 5 in the series is now available !

The first FIVE books in my series are available in either PAPERBACK and EBOOK forms at Amazon.com:


Book 1 - SOUL KEEPER  [ Introduction of the main characters. This story is a bit like a Harry Potter story. The main characters consider their powers to be magic.]

Just a quick note

I know I've said this before in different ways. I know it's gushing, and I know it's kind of mutual admiration society stuff, but I don't care.

Ladies and Gentlemen of The Letsmakerobots.com community, you are the finest human beings I have ever been exposed to.

Thank you all for your continued participation here, from sharing your brilliant or modest or silly ideas and creations to teaching n00bs to lmgtfy or rtfm, or just goofing around in the shoutbox.