Let's Make Robots!

DAGU CNC mill controller - first prototype

I've been developing a CNC controller for DAGU. The project originally started late 2012 but got shelved because of other projects. Now we've dusted it off and plan to finish it in the next 6 months. Unfortunately blog post don't support video so watch the video that explains the basics by clicking on the link.

Automatic medical diagnosis device - Part 1

One of my long term projects is to develope an automatic medical diagnosis device. During my research I came up with the so called naive Bayes classifier and started to learn about this kind of machine learning. In the attached PDF I use the example given on the wikipedia page but in greater details. If you want to learn more about naive Bayes classifier, I recommend the following one: http://guidetodatamining.com/guide/ch6/DataMining-ch6.pdf

 

The darn H-bridge

I just want to be able to reverse a current. How hard can it be?

I just want to be able to decide direction of the motor to my pic, why does it have to be so complicated?

Well - perhjaps it doesnt! Jip / Jimmy, the most clever guy in here just drew me this and send it to me.P2290333.jpg

The smallest and most-likely-to-burn-something H-bridge in the world!

If it works, I will make a full walkthrough about it.

If it burns my robot.. well.. he did warn me ;) 

 

..:: XMOS Challenge - XK-1 ::..

Hey Everyone,

     Unfortunately I will not be uploading images or videos to this site nor will I be posting blog entries... Due simply cause I have my own web space that has been left abandoned for a long time and I feel it’s time to make use of it.

Absolutely not robot related rofl

Sorry, just had to share this :D

Mini Sumo Bot Parts!

Intro

I decided to make a mini sumo robot a few weeks ago instead of doing an obstacle avoider. Turns out that once you think about it, mini sumo bots and obstacle avoiders are pretty much the same! The only changes I would need to make would be to the code. Great! Sumos can also double as line followers. So in short, they're pretty versatile. Here is an image of most of the parts that will go into this sucker. 

Picture

Glen the Stove, Picaxe, Processing, Twitter and Thermsistors...

Yup, I got the Twitter-stove project done. The video is pretty self-explainatory and code is available upon request.

Glen the Stove on Twitter

Acroban robot

Wow! I just came across this recent work from a research lab in France. As you can see in the video, the robot moves a bit like a child -- it's pretty cute.

Their robot has structural stability due in large part to their use of *drumroll* rubber bands! I like that their components are cheap and off-the-shelf. It would be cool to try and reverse engineer it... or I guess we could just ask them for the schematics... hmm...

Of course, some people still find it creepy. One girl told me it was as scary as puppets.

Wii Camera and Easy PCB Etch How-To

Well, I got sick of having a lappy as a middle-man between my wiimote and my robot (via bluetooth). I decided to remove the camera itself and go with on-board i2c instead of sending BT data back and forth. Now, I have seen a lot of great "adapters" to go from the fine pitch of the wiicamera pins to "standard" pin spacing, but I need not only to adapt the pins, but also a good way to mount the device to the pan and tilt mechanism I have on Walter. I decided to etch a PCB for the task using, I think, the easiest PCB etching process around. Period.

Gareths Elvish Propeller Mini Computer Framework.....

I needed disparately a mini platform for development - the propeller can be easily set up to read ps2 keyboard/mouse and output a composite video signal, plus sound and if i play my cards right a usb bridge interface for my phone.

All i have basically done is sit the propeller usb board into an ic socket and soldered 2 IDE diskdrive sockets either side - allowing me to use the system like a breadboard for experimentation. On the back i have wired in sockets for mouse and keyboard.

My Wii-camera will just plug into the ide socket....... oh this is going to be soooo magic..

DAGU product support - Manuals

G'day everyone,

I have been designing products for DAGU for over 2 years now and have always tried to provide product support here on LMR. One problem I have had is that sometimes the manuals are too big to upload.

If you have any problems with these kits then you should ask questions in the component section. I answer questions there so that others with similar problems can look for answers.

The components on LMR are here:

Home made tracks + brushless motor

This 40A brushless motor kinda surprise me that they really works. Well, for now at least. I don't know if they works with 2 belt in different directions. Gotta go get 9 teeth sprocket for another motor.

The reason why I use brushless motor is because the controller is way cheaper than those high power brushed motor speed controller(50A+). Could anyone tell me why they are so fxxking expensive? like $400~$800 USD??

Polymorph frame for a base plate

Materials:

  • polmorph (of course)
  • 4 ice cream sticks
  • 1 long  and 1 short mechano panel
  • some flat plastic

Tools:

Elektro

Just a sneak preview: Elektro. Robot entry is following soon...

My Makerbot Thing-0-Matic Assembly Progress Blog

 

Hello LMR people I made this blog to show everyone where I have gone with the assembly of my makerbot tom .

What I have to say after all I have done ,you will see later on this blog ,is that it needs time a lot time and of course good will

if something doesn't going as you were expecting ...

 

Photos follow(its not of best quality cause I dont own a camera at the moment only my cell phone) :