Let's Make Robots!

Venus Fly TrapBot - Solar Powered - Papillon Captured

Solar Powered Venus Fly Trap.

Following up an idea posted by (-: rik :-) here is LMRs first Solar-TrapBot that will eat anything in its path.

Its powered with a Solar Cell Miller Engine with a whopping lip-smacking 1 Farad Super Cap to power its Hungry Jaws.

If anyone whats to save Papillon the Solar-AirBot Butterfly then you have to put your Bid in Quick as its looking to be very Sunny this Weekend ...............

VenusFlyTrap__4_.jpg

Picaxe 08 M and IR

 

Can a Picaxe 08M receive a IR signal transmittet by another Picaxe 08M ? And when it receives a IR signal transmit a high on a pin so that it could act as a digital input on a picaxe 28X1?

I have looked at the manuals but cant figure it out....

Thanks

Simple motor control for Mr. Basic

I have seen a few people asking questions about controlling Mr. basics motors. One problem is that they draw more current than an L293D can handle. A L298N will do the job but you will want at leat 6V. Below is a schematic of the simplest way I know of to control your motors. Using a 5V relay you can run from 3.6V to 6V. I suggest a 9V relay if you want to use 7.2V.

It begins!

Atom Massager lit up

UPDATE: 22 MAY 2009

Have four cellphones on their way to recycle for motors and batteries (and whatever else I can harvest from them).

______________________________________________________________________________ 

  Having spent a bit of time looking at the many creations here on Lets Make robots, and on other websites, I still wasn't sure what type of robot I wanted to build. Then I stumbled across the Atom Massager at a local DSE (NZ) store.

The Pulse - 2009w21

LMR on the Brain
Sensing the living LMR community since 2008w43.

Famous last words

Some of the most promising of LMR projects withered into oblivion with these memorable closing statements. A short selection from the LMR video archives:

Laser Tag Project

Hi guys.

I thought that the best thing to do to save all my progress so far about Laser Tag was to write a page in the blog, so here i am!

This first entry only deals with the various possible setups i might use for this project, i haven't made up my mind yet. I'll start by listing the most probable ones.

 

SETUP 1 (voodoobot)

voodoobotssetup.png

-3 SERIN MCUs at the top, each one runs the SERIN command and as soon as they get something they tell that to the master.

START: first robot

Hello

I would like to buy my parts as soon as possible, but would you like to check if i haven't forgot anything ?

I would buy

- 1 sharp IR sensor
- Tamiya Dual motor gearbox
- Tamiya tracks

(www.sparkfun.com)

- picaxe starterpack
-l293d motordriver
-picaxe servo upgrade pack

(www.techsupplies.co.uk)

 Greetz Laurens

LASERS!!!!!!!!!!!!!!!!!!!!!!!

So I have this laser tube lying around and I was wondering how to use it. It is a Helium-Neon (HE-NE) gas laser tube built by Uniphase.

 

Photo_28.jpg 

horrible picture, just like most of mine

 

It's description is very vague, I'll read you the label.

(clears throat)

 

Uniphase

 HE-NE GAS LASER

THIS TUBE DOES NOT COMPLY WITH 21 CFR 1040. USE ONLY AS A COMPONENT. SEE INSTALLATION INSTRUCTIONS.

MADE IN U.S.A.

 S/N 183475

 

Buying the same is so cosy!

Just my 5 cents:

It should come as no surprise that I am really happy that DAGU has chosen to be friends of LMR. It has a lot of advantages!

However, it also broght something new and unexpected with it; We are all (50 of us) getting the same toy! 

I dont know, I just think it is so cosy, in the need of a better word. So I had to write a blog entry about it.

And then we all had the same problems, and we all had the same talks with Claudia from DAGU, and we all thought she is so nice, and we all got a free mouse, that we all..

:D

Gift for LMR Mr.Basic Buyers

Sounds everybody is waiting for my good news.

 

But firstly I want to s

Price and function, which Pic axe?

Well its a bit late in the year, but i have started our schools first robotics club and have attracted a suprising large crowd. I intend to show them them basic concepts, much of which are covered here, with the final project being the start here bot (final planned project).

Dagu's Ultrasonic Sensor testing

I've made some testing with the ultrasonic sensor from Dagu. Tests were made on the platform the sensor is build for, the Asuro. The sensor works pretty well, most of the the time. The range of obstacle detection is from 0..25cm. Sometimes the sensor dismiss an obstacle, when the objects is not directly in front of the robot.

 The video gives some impressions, how this sensor works.

Japanese vending machine

You just got to love the Japanese vending machines!

Back home, the vending machines just pushes down the goodies when you order someting, here a robotic arm picks up a little tray, gently moves it to the opening, and waits there for you to pick it up. Then it parks the little plasic tray. First time I saw itm I could´nt beleve my eyes!!!

Any robotics enthusiast just have to love it!!!

 

New robot in the making

My Mr basic is almost completely assembled now. As many of us, I ran into difficulty with the axles of the front wheels.

axle_soldered.jpg

DIY CNC Part II

26/05/09

2 more draw slides to use for the Y axis purchased from here. High quality slides with ball bearing inserts. Still have to work out how I want to mount them. They were only $15 each.. money well spent now that I can see them close up.

P1000793-500.jpg

P1000792-500.jpg

 


 

PAPERduino

This is a fully functional version of the Arduino. We eliminated the PCB and use paper and cardboard as support and the result is.. the PAPERduino :D

This is the the first version of the layout design, next we will try more designs, and another materials.

You just need to print the top and the bottom layout, and glue them to any kind of support you want. We hope that you start making your own boards. If you do, please share your photos with us, we would love to see them  ;)

See the Swedish Mastership in Robotics live!

Hey everybody just want to tell you that the Swedish Master Ship in robotics is currently being held in Gothenburg.

And it is all sent live on this page

http://crf.nu/RobotSM-Live/Live-All.php

 title1.gif

They are competing in:

Mini sumo, robots that are max 10cm X 10cm and weight max 0,5 kg.

Standard Sumor, robots that are max 20cm x 20cm and max weight  3kg.

Almost a robot page worth

1069d1_putting_together_640.jpg

My Theo Jansen Walker is getting closer and closer to a robot-project-page-worthy machine/creature. The port side is now complete but not finished.

Complete in the sense that I have all components designed, purchaged, built and even assembled. Not finished in the sense that it will not move! Hence the lack of video. Photographs will have to do.

1069d1_belts_too_tight_640.jpg

Qwerk control with processing

So I was doubly inspired by Chris the Carpenter's recent experiments with robot control via processing, and f5pql's heavily-equipped qwerk-based robot to do some more tinkering of my own. I'd been programming the qwerk for autonomous operation through the SimpleRobotClient, and controlling it directly through the telepresence DiffDrive client, but was beginning to wish I could somehow construct a hybrid of the two. But building a client from scratch - or even just tweaking the existing ones - looked scary!

Choice of servo

Im part of a group designing a quadruped robot. We require servos on the leg for one for vertical and one for horizontal movement. We undergone torque calculations for the robot to remain stationary which eg. calculated at 3.75 kg/cm. We looked at torque specifications on the servos and it gives you stall torque for hitec servos. I am unsure for what range of torque for the servo to select. Eg like 3.75 kg/cm for 5 volt supply what torque from the servo specifications must be selected? Please help me out. Also what model of the hitec servo must I choose. Not really worried about speed.