Let's Make Robots!

2 wheel self balancing robot using arduino and IMU6050

I want to build a two wheel self balancing robot using Arduino and the IMU6050. After a few weeks looking around robot and arduino forums, without much luck, I thought perhaps users might share their experiences, ideas and code on this forum.

For starters, I built the platform out of 5mm plywood, using the following componnents

2x Tamiya 70168 Double Gearbox Kits
2x  Pololu Wheel 90x10mm
1x L298N Dual H Bridge motor driver
1x Arduino Uno
1x IMU6050 board
1x bluetooth module

Help to convert a blank ATmega328 into a speech synthesizer chip for under $5

Introduction:
Some time ago when I was looking at the cost of speakjet and other hardware speech systems I remembers that back in the 80's there was a program call S.A.M. (software automated mouth) that ran on my Atari XL. It was also available for the C64, Apple and possibly some other systems.

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:

YourDuino.com Low-cost Arduino-related boards and parts

Hi Everyone,

This is Terry King. I run YourDuino.com along with my friend Jun Peng in Shenzhen, China. 

We have a lot of How-to stuff on our WIKI here: arduino-infoWIKI  

And our shop is here: YourDuinoSHOP

LMR Intro Video

 

 

Whilst editing my newest video I found I was getting a little sick of just having an LetsMakeRobots static image at the end of my videos. Because of this I thought I would throw together a short LMR clip to make it look all fancy and stuff.

You are free to download these and use however you like.

The YouTube video is of the clip.

 

Download links can be found using the link below:

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....

Android LMR app ..?

Google has made it pretty easy to create apps for their Android OS, that I am sure you have heard about, and possibly use.

I am a heavy user, and I'd like to try and make an LMR app, just for the fun of it. Or have yours on my phone?

But what on earth would be fun or possibly even useful?

Perhaps it's  an all together stupid idea, because one can always just use the phones browser, and get "the real thing" there, even log in and all. Several of my posts have been made that way, from my phone.

Calculating Resistor Bridge

***Update***

Well, I messed around with a lot of resistor combinations, and got really frusterated with sorting through my resistor box looking for all these different values. Instead, I grabbed a pot. I got this one --its a 15 turn, 10k trimmer. I did some preliminary tests and I would love if someone could check my math and calculate the current it is going to draw. Following is the values read with a measure thingie on either "side" of the center pin of the pot.

At 12v:

The Latest In Hobby Robotics

 

Frits has partnered with MAKE to present this video blog of the coolest things happening on LMR. 

Check back on this forum post for new episodes as they air.

Here the YouTube Playlist:

Converting an STL file to Gcode to drive a CNC mill or lathe

As mentioned in my blog, "Multipurpose Mini Machine" DAGU wants to develop a low cost CNC machine kit. The models shown here will not be the final product, they are simply what I used for testing the quality of the components.

Part of the kit will be an Arduino compatible controller. Ok, I know, nothing new so far.

Xbee conference notes

Gareth, David, Glen, Chris and I discussed Xbee radio modems. Here are some notes I took.

Watch part I  here.  Watch part II here.

TAG all your Xbee related content with the tag "xbee", please.

 

New cheap sonsor for the Start Here robot?

The Sharp IR sensor that is used in the present "start here" is no longer being produced.

We need to find a replacement, and all ideas welcome.

Conditions: It must be a cheap distance sensor that can be purchased "in the shops".

Cheap, and commonly available.

Self-transforming robot

Hello everybody!

Check out this amazing self-transforming robot if you have a couple of minutes to spare. It was designed, built, and programmed by Muhammed Hasan Shariq at Heriot-Watt University, Dubai campus.

Enjoy!

Student robot maker

 

Would an LMR Marketplace work?

This past weekend I thought a lot about a separate entity that would run the commercial side of LMR. Very like how Adafruit.com represents a company,and Ladyada.com is a supporting community site.

I have an idea for an LMR Marketplace that I think would allow a commercial side to LMR, that stays true to the spirit of LMR.