Let's Make Robots!

Subsumption Archecture

Hey all I found this very interesting idea in a book (The Robot Builder's Bonanza) for a way to code a robot. Instead of having a robot that merely goes straight till it hits something you have several "levels" or "layers" of code. The first one being an obstacle avoidance sorta thing, and then on the next level an aimless wander. This wander section of code which would ask the obstacle avoidance level if it was OK to move. If it was OK then the random wander would do its magic but if there was an obstacle then the obstacle avoidance would take over like a sort of reflex.

Can I check if my new flashy Futaba s3003 is fair dinkum?

Okay so I got a few new futaba s3003 servos cheapish, and while I'm looking around on other sites to see some prices, I notice that somone left someon else some negative feeback for the servos they bought, claiming that they were not legit futaba servos.

Not knowing a lot about futaba, I'm not entirely sure if I have real futaba servos - at this stage, they were so cheap it hardly matters, but for future reference - how does one spot a fake?

Bearing mounts

Hey there LMR,

 I've hit a bump in a project of mine. I need a simple assembly to house a small ball bearing that will support part of a robotic arm assembly. It plays a part in the wrist joint, as one side is directly servo driven but the other needs a bearing to hold in steady. The bearings I have are 8mm in diameter and have a 4mm diameter hole for a shaft or bolt. I have access to aluminium sheet, acryllic, and MDF wood, as well as M2, M3, M4 bolts and rivets for fasteners. Anything else I will have to source, but it shouldn't be too hard of a problem.  

CMU cam 3

Is there anyone familiar programming a CMU cam 3? I was just wondering if we could program the camera using Visual Basic?

Choosing the right connection for a network of robots

I've been reading up on robots, and in one of my books there's a chapter called Multiple Robot Interaction, which mentions having one robot as the queen, and the rest as drones. There are several ways of connecting, WLAN, Bluetooth, Infrared and I'm sure I'm forgetting lots of others. But which is the most commonly used/best way of connecting?

Picaxe.xml in gedit ?

Is it possiable to the picaxe.xml file in gedit-for gnome users, rather tha kate ?

Declare an Array in picaxe basic?

I want to make several led's blink in one direction the the other, i figured the best way to do this would be to have the output pins in an array then use a 'for next loop' to loop thru them.

But the manual dosen't say how to declare an array, so how do you declare an array?

Using Picaxe 28x1


Rat Brain Robot

This robot is controlled by the brain of a rat - making it the world's first cyborg rodent...

(click here for HQ video)

Complet newbie needs help with Picaxe 28x1.

I m such a newbie, please forgive me.

I have the picaxe 28x1 starter pack and i'm trying to do the "Test the System" tutorial, but im am so lost.

When it says 'connect to pin 4' i notice there are two pins side by side on #4, which pin do i actually connect to ?

do i have to connect both? Been using the pin closest to the Darlington chip, with out success.

Also there are two 'v' pins on oposite sides of the board, which one should i use? or does it matter .