Let's Make Robots!

Theo Jansen legs - possible applications

Here is an open invote to all of you to join yet another Shoutbox debate. Oddbot and I are both thinking of ways to mount a vehicle, or creature, on Theo Jansen legs. (use the search box)

Most creatures living on the 'net have two sets of three legs. Each set on a side. In the front and in the back. Many creatures I saw even double up on the legs: six in front, six in the rear. All connected to the same crankshaft in the center of the creature.

See the original Transporter or  Animaris Rhinoceros

My latest trash find!!!

My neighbor was throwing out this computer. I asked if I could have it. He said "sure, it doesnt work anymore". I asked what was wrong with it and he said "I don't know, it wont turn on". I told him I would take it and see if there were any parts we could use. I took it in the house, plugged it in and got an error message. The hard drive was pretty crappy and small. So I took the hard drive out of a DVR, formated it, and put it in this computer and installed a fresh copy of XP. I vaccumed out the inside (it was nasty).

Polymorph - How do you colour it

I would like to colour some polymorph - how can i do this.....thanks

 

Pic-axe 28x1 programming

I just got the all my parts for the start here robot, and its fully contructed however i have almost no clue on how to program it. Could someone posibly link me the most usefull pic-axe guide for basic? And/or have any tips or suggestions for programming of the start here robot?

Shoutbox Classics

This sort of classic material needs a good home.

 

SBC01.jpg

Multiple Processors

Not sure if this goes in here or programming ... I was wondering if it is possible to write to the brains of our boards using C+/+ or vis basic. net etc. I have grown up with Q/Basic and the only problem i havewith it is it can only excecute one program line at time, impossible for multiple executions of sub modules. And i was wondering if the above case = false, is it possible to have a couple of boards to process the same thing, talk to each other but action different modules? Difficult question maybe i know.. but thats me :P

Help for resetting Parallax Servo Controller

I'm using the PSC to control 4 servos of a robotic arm. 2 switches are used to select the 2 default positions.

When a switch is activated, the servos do not respond. They only do after the reset button on the PSC is pressed.

I'm wondering is it possible to write a code to reset the PSC instead of doing it manually.

 

Anyone done it before?

LM324 question...

So, playing with oddbots distance sensor, the subject of using an op-amp to beef-up the signal was raised... I got a lm324 and did a little looking over the data sheets and quickly found there are about 4000 different applications for this little guy. Does anyone want to suggest a schematic that would be best to amp-up a signal coming from a IR photo-transistor?

A Theo Jansen inspired transport

Check this video, from the Make blog, especially for Rik.

I want one. And I got the same drill motors used, I think.

 

4 CHIP BOARD BY R4 SYSTEMS INC. PICAXE

I BOUGHT A 4 CHIP BOARD MADE BY R4 SYSTEMS INC.  FOR PROGRAMMING AND TESTING PICAXE CHIPS.  SEEMS TO BE A GREAT BOARD, HOWEVER THE DOCUMENTATION ISN'T SO GOOD.  DOES ANYONE KNOW HOW TO OBTAIN THE SCHEMATIC ONLINE FOR THIS BOARD.  THE HARD COPY DOCUMENTATION SUGGESTS THAT I SHOULD OF RECIEVED A CD WITH THE BOARD WITH THE SCHEMATIC ON IT.  I WENT TO R4 SYSTEMS WEBSITE AND DOWNLOADED THE DEMO SOFTWARE WHICH INCLUDED MANY SAMPLES BUT NOTHING ON THE 4 CHIP BOARD.

Motion Detection

is this possible with the SRF05?and is it possible that it can do it while moving? SplatBot got me inspired to do this..

RF and Sharps not playing together?

 

***Update 3.21.09***
With my new found osilloscope skills and a little tinkering, I think I have found the noise. As far as I can tell, it is all on the ground. Here's what I did:

No cables... solder some?

Hello,

 I made my first newbie error and sent mail rather than a post ;) However -

I have all the parts for the simple robot, the one in the 'how to make your first robot' section' But i didnt read carefully and forgot to check parts.. so my sharp sensor doesnt have cables!

wondering if anyone knows how to solder a set of wires and make your own cable - im generally quite handy with my soldering iron ;)

 Kind regards,

 

BlueS

Push sensors aren't working right - Help!

Hi!  I am needing help again for my 10 yr old son who is building a robot.   (servos work now - thanks)

 

The push buttons are working (as indicated by the red light on the circuit board when they are pushed).  But, they won't cooperate with the program.  

 

Here is the part that references the button (basic stamp II):

 

 

COUNTER   VAR   Word 

IF (IN5 = 1) THEN GOSUB FORWARD

FORWARD:

FOR COUNTER 1 TO 10

PULSOUT 15, 2000

PAUSE 20

FOR COUNTER 1 TO 10

PUSOUT 13, 2000

why do it exists?

well

building robots and seeing other robots, always the same problem emerge in my mind:

WHY?

Why a robot is built and exists?

what is it's purpose?

who benefit its existence? 

it's a phylosophycal matter :o

 

 

 

Picaxe connection problems

I bought a PICAXE 20M for a new project, and I'm trying to download code to it over the serial port of my computer.  I set up the circuit with the 22k and 10k resistors and tried to download, but I got a 'memory validation failed' error.  In the options dialog, I can get the Firmware version with no problem.  After looking at the PICAXE forum, I did the following:

- Checked the voltage going into the PICAXE - at first it was reading slightly over 5V, but I added a 7805 and it now reads about 4.8V. 

- I tried doing the hard reset.

Make a Autonomous Tank Bot

Hello i would like to make a robot "look like tank bot" with ,3 servos ,tank wheels,distance detector,speak detector which i can program with my pc but i am so amateur to this!
Can you please send me the list of the parts i need  and some instructions?

Please make it cheap!

DIY Picaxe 28x1 USB Headphone Jack Programming Cable?

Hi, I'm somewhat new here.

 

I'm in the process of building my first Picaxe robot based on the 'Start Here' Bot. So far I've recieved  my motors and wheels from Pololu and my Picaxe 28x1 Starter Pack from Sparkfun Electronics. Sparkfun said that a programming cable wouldn't be included, but they charged quite a wad of cash for one, so I bought the kit anyway since I couldn't find it anywhere else relatively cheaply like I could here. The only other one I found cost like $60.00!

 

Start here components

I was looking at the start here and decided to start ordering Picaxe parts. I saw a shop in the US, finally, so I could order from there.

http://www.phanderson.com/picaxe/

First of all, they're out of stock on the 28X1. Would it still work if I got a 40X1 instead?

Second, they don't sell starter packs. They also don't sell USB versions. My computer doesn't have a serial port. Would it work correctly if I got the 40X1 and bought the USB to Serial thing, then downloaded the IDE online?

 

Thanks for the help :)

 ~~Xoxcm