Let's Make Robots!

Blogs

Second iteration of 08Lunchbox project board

Few days ago I recieved a package from Fritzing Fab with 10 PCBs of the second iteration of my 08lunchbox project board.

It is now smaller: 50x50mm and interfacing pads are completely redesigned to allow more versatility and eliminate jumper wires for some components. Here is visual comparison:

V0.5 on the left VS V0.9 on the right.

ProtoPrusa Printing

ProtoPrusa PrinterFirst off - Tips from a Noob

Interactive Stochastic Learning Automaton - cleaned up code

I have cleaned up the interactive Stochastic Learning Automaton code I once wrote and attached it in this short blog. Just send '0' or '1' via serial monitor, if a chosen action was favorable or unfavorable and see how the automaton learns to chose the right action over time.

KellerRobotics and its progress

Well I've been working http://kellerrobotics.com, the website for my business KellerRobotics since August or so, and I finally have the first printer of the fleat of printers which is a RepRap Prusa Mendel i2. I ordered a new hot end and it should be here early next month. I was a little bored tonight so I downloaded Blender since its one of the few full-feature and free 3d modeling programs available and its not that bad of a learning curve, Had a pretty decent wolf head made within a half hour of downloading the program.

Speech Recognition - Robot Thinking and Understanding

Programming a robot to do a single specific task such as following a line is hard enough for most people. So how do we program a robot so it can perform many different task? How do we command / control it?

Recently I have been wanting to use the speech and voice recognition of an Android mobile phone. My friend Bing wrote a simple app for me that allows my controller to connect to an Android phone via Bluetooth and then send the phone a list of words that I want the robot to recognize. For example: "OddJob,go,forward,backward,turn,stop"

Delta Printer WIP

Hi,

Been on this for a while now, thanks to Ossipee and Hoff  and Mogul :/ 

They kept pushing me to build a delta so here is my WIP on it:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Idiot and his Form-1

A short blog to provide an update.

Those who were in the ShoutBox a few hour ago, would have seen how I was excited to finally receive and setup my Form-1... Shortly followed by the cries of a broken man who could not stop kicking himself for stupidly overfilling the resin tray... and then had overflowing resin all over the insides of the printer...

I have been busy cleaning and think I got most of it. I also spoke with Jory from Formlabs who gave me some advice on cleaning (and sent me some extra instructions as well). They were great.

Servo Power Gearboxes - revamped


We have recently revamped our line of Servo Power Gearboxes! Our gearboxes have always been top-of-the-line and super powerful (up to 3,402 oz-in of torque!) but now offer upgraded features and a more durable construction.

Rostock

I thought I would start keeping a log of my Rostock build.

 

Actual Purchases:

Proposed BOM and Vendors:

T-800 reloaded

A funny afternoon in the office, some robot talk, and one of my Chinese artwork girls with some photoshop fu came up with this (it's me!)

That said, I really want to build a life-sized humanoid robot...And it will kill us all!

No comment

Getting ready for the service droid :)

So I've ordered the Dagu service droid :) http://letsmakerobots.com/node/38776

I'm getting the service droid with a Rover 5 (4 motors/encoders), 4 channel motor controller and Dagu Red Back Spider.

I already have a Rover 5 with 4 motors on which I use the 4 channel motor controller and Red Back Spider. I'm powering everything from a 2S Lipo (3000mAh). You can see it here: http://letsmakerobots.com/node/31410 or on my blog: http://www.bajdi.com/category/rover-5/

On my current Rover 5 the 2S Lipo feeds 3 devices:

Stupid robot trick I've never seen...

We recently had a spate of doodle bots entered as projects for various reasons, and we never have a shortage of line followers in the queue. I have never seen anyone attempt to make one follow the other. It would be amusing to me for about 39 seconds I think. Especially if the doodle to were programmed to draw its line in a random way and if there were multiple line followers-kind of like a row of ducklings. Video would be great with an electronica version of the "Bridge Over the River Kwai" march.

(This is a 2 am post. I bet I regret it when I wake up tomorrow.)

Troubleshooting 3-d Printer

This blog is a place to collect notes to be worked up into a Tips post for trubleshooting 3-d Printer problyms.

The idea is to list a symptom with a photograph and list sucsful fix actions to try.

 


 

For Example:

Printer: Printerbot LC

Material: ABS

Notes: Extruder temp 230C, Bed temp 110C, Fan on 100%,Polymide (Kapton) on a glass bed 

Problym: Poorly formed vertical edges, Keystoning (wider at the top then the bottom)

Insect Bot Mini Workshop

Last Saturday I held a workshop in Xinchejian, our Hackerspace in Shanghai. The workshop was about to build an Insect bot mini.

PlayStation 2 Touchscreen Robot Remote

This is a project I've been working on for a while.

It's supposed to be a robot remote control. I have had it working as a remote but currently it's in the middle of an upgrade so it doesn't really control anything yet.

As you can see it uses a PlayStation 2 controller as one of the input devices. There's an enclosure strapped to the front of the controller.

Here's a side view to give you an idea of how the two main parts join together.

Hello LMR Community!


 Hi Friends,
We've been watching and reading the LMR site for several months now, and we have really enjoyed it! We recently decided to begin posting regular blogs on LMR that will include customer photos, build logs, new product announcements, guest articles, helpful tech tips, and more. We hope you'll stop by every now and then to see what we're up to.  

The 3 'R's' - Rethinking my Requirements for a Rover....


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Life with Little Free time!

Right... It has been Way to long since I have had enough time to jump back into this amazing community so this is a quick Catch up on what has happened and what I've learnt in the last 9 months! (Why-Lumi once said if it's not on LMR it hasn't actually happened! & Some Pretty AWESOME Stuff has happened!)

 

The Low down....(More Info will Follow)

Moved to Australia, Got a Crap 60hr a week job driving-NO TIME for ROBOTS :-(

The case for lurking on LMR before starting on a large (ish?) robotics venture...

Ok... so let me start with... I've been humbled by the sheer simplicity with which some of these bots on here are made.  Functional and clean.

 

The one article that has made me rethink my strategy the most is  Oddbot's article Pushing the limits with encoders  

 

Pushing the limits with encoders

This is now a tutorial and can be found here: http://letsmakerobots.com/node/39098

I've been working on some code so that a simple Mini Driver using a lowly ATmega8A can drive two motors with encoders and 8 servos. This may not sound hard at first until you remember that the Servo library kills PWM on the ATmega8. To make matters worse, D2 and D3 are the external interrupt pins but we need them for driving the servos.

4.5 Children

4.5 Children

Thought i would catalog these here as a first for LMR (4:11:2013)...... (before any other maker feels the siberian wind)

These are the first members to be added to my family of Matryoshka dolls .

I designed them with "Blender" and 3D printed on my "Ultimaker" at 0.2mm Zaxis step. (so room for more Vodka)

Dagu Classy Chassis

What more can we ask for..... Awsome presentation of our very own LMRer OddBots & Tyler (Dagu) Classy Chassis.

BirdBoard!

I think I'm the first (other than Bird himself) to finish a "BirdBoard."  It took maybe 3 hours and some frustration with the convention that has circuit layout software label both caps and jumpers with "C" but check it out-It works!  Now to put it on a robot...  Thanks to both bird and Ossipee for their help on this.  When I make a robot with it I'll tell the whole story again, but suffice it to say this thing really is an elegant little bugger!

Hello , I am Josh Starnes

I started building robots beginning of last year. I live  in Tennessee USA.  There are not many local places to buy parts so many of my orders come from China or a couple choice online stores.  If I have everything I needed at once I would have a robot together in a matter of hours but it is usually the waiting game. I find parts , order then wait 2-4 weeks to get here and start back my work.  Though I am a begginner in robotics, I am a Jack of all trades. I can weld , solder , draw .

Why are we so crazy? More lubby dubby bull$#*!

In light of the recent forum topics and discussions in the shoutbox I felt that I also would like to contribute the 'lubby dubby' bull$#*!.

I joined this site just over a year ago now. I was nearing the completion of year 12 and had been doing YouTube stuff for about 2 months. I had learnt how to use Arduino and had created several little creations. However, having a history with robotics I was drawn back to my robotic ways.