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Bliepbot

Robot – work in progress
 
frankfiles's picture
By frankfiles
@ March 18, 2010
Balancing on two wheels,
Cost to build: 
$350
Weight: 
-7000 grams

 

Hi,

This is my first post to this forum, maybe time to let you see my robotic project.
Five months ago i planned to make a two wheeled balancing platform.
I wanted to make something with a n old asus eeepc, two usb i/o cards, imu sensors (adxl203,adxrs300), home brew motor drivers and some nimh batteries.
And this is the first result of my work: (my kids call it bliepbot)
http://www.youtube.com/watch?v=rHoz5QwNRf0

I had some problems with finding motors.
On the video i use cheap chinese motors bought on ebay. (lot of sound, to many backlash, no encoders).
Later i tried emg30 motors. (unsuccessfull, plastic gearwheels broke on tuning pid).
Now i ordered the 'Parallax Motor Mount and Wheel Kit with Position Controller'.
I am looking forward on recieving the Kit.

regards frank,

 

--- update 24/3/2010

Today i recieved the Parallax motor and wheel kit.

i like to share some pictures of it:

next step is to place them under bliepbot, make some finetuning and implement the position feedback,

to be continued...

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By Prettybird
@ Sun, 2010-03-21 23:37
Prettybird's picture
 You have more guts then me trusting a laptop on a balancing robot. Wonders if it can carry cocktails. Looks about the right height.
By frankfiles
@ Mon, 2010-03-22 19:36
frankfiles's picture

Hi,

Good idea to mount some kind of wooden service plate on top of it.

Serve cocktails and playing a song  "i stand here at the bar, i hold an empty glass..."

Is there anyone with an idea how to scan for empty glasses, got a webcam onboard, maybe humidity sensors can help.

cheers, bliepbot,

By OddBot
@ Thu, 2010-03-18 12:24
OddBot's picture
It seemed very stable in the video. I look forward to seeing it move around with purpose
By fritsl
@ Thu, 2010-03-18 12:26
fritsl's picture
Hey Odd, you never made a balancing bot did you?
By OddBot
@ Thu, 2010-03-18 12:52
OddBot's picture
I want to. Especially now that I can use the Arduino's which run faster.
By damo
@ Thu, 2010-03-18 13:12
damo's picture
I've just completely scrubbed using the arduino software/libraries completely on my arduino board... now I'm basically doing AVR coding which runs faster( and you can do a lot more ) but more confusing and takes longer to learn to do stuff which I could do in a few seconds with the arduino libraries... but in the long run will serve me better as I can then code for almost any chip
By fritsl
@ Thu, 2010-03-18 14:11
fritsl's picture
That makes you a Techie!
By damo
@ Thu, 2010-03-18 14:34
damo's picture
I think I'm both :P even though I scored like top marks pretty much for techie but I've always been an arty/creative person and programming is just another art form to me :) but I love knowing how something works and all in the in's and outs... but I'm also a musician at the same time! I guess programming has unfortunately taken over more of my life now days as its my job... where as in my teens it was all about music
By fritsl
@ Thu, 2010-03-18 11:21
fritsl's picture

Hey Frank,

Thanks for sharing in here :) And congrats on making the balancing robot!

Do you have some closeups? I am trying to figure out what is what. And possibly fill out more of the forms on this page (Edit at the top) - More info on the sensors?

Looks like you have gone your own ways here, so there might be a lot to learn from you :)

Thanks!

By frankfiles
@ Sat, 2010-03-20 23:45
frankfiles's picture

Hi,

here some detailed pictures:

bliep2.jpg

-center: the imu sensors

-left: 7812  12v power for the eeepc

-right: usb io board

-down: the L6203 motor drivers

 

bliep1.jpg

-battery tube contains Memorex HR20 4000mah 1.2V batteries

 

bliep3.jpg

 

more posts and videos when bliepbot is standing on the parallax motor and wheel kit.

regards frank,

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