Let's Make Robots!

Servo Strength

Alright, so i've been out of the game for a while and most of my parts are being used. I now need to order several servos (12 in total) for a hexapod build I am planning. Each leg will have 2 DOF, with one standard servo (i'll come back to this) connected to turn the leg right and left, and a more powerful servo (coming back to this again) to move the leg up and down. I'm not exactly short on cash right now, but I really want this to be a relatively cheap build.

increase servo speed

Hi guys

 

i have built a well running heapod based on the picaxe 18x controller board

 

only thing i notice, compring with some  the bots here, is that the servos seem so slow

 

can i speed them somehow

 

rgds

ron

ultrasound interference

Another question. Am planning to use 3 ultrasound one directly above the other at about 3 cm distance from each other my question is there a possibilitty that their signals interfere with each other thus messing out the results?

Radio Controlled Servo?

I am completely new to robot building, and electronics in general.  I am currently working on a homemade airsoft claymore.  It is designed to be toggled via a wireless remote control. The issue is that I don't know much about wiring remote controlled systems. I've built a few remote controlled cars, but they were from kits, so I really didn't understand the electronic aspects: I just assembled them by following the instructions. Here is my problem with my current project:

controll phidget with picaxe

Can i use phidget sensors using a picaxe 28x1 and a picaxe poject board?

IR puls modulation reciver

Now i have been looking after some info about when you are making a IR obstracle sensor. Is it realy that important with modulation if it is used indoors? And if it is, how do you get it to work, with modulation?

Most people that have made someting with modulation, dosent describe how you make the reciver modulate, or how you proces the data.

I can easily get the sender to modulate, but my question is, how do i get my reciver to modulate, and how do i proces the data.

R-Dev-Ino

Intoroducing R-Dev-Ino

R-Dev-Ino is a Robotic Development Arduino compatible board, easily stackable. If you want to build a more complex robot, you need to modularize it. Instead of designing specific boards for each module, I have designed a multipurpose configurable board with a small prototyping area and an I2C connector made so the boards can be stackable side by side, one on top of the other like this:

IR Sensor Killer

Hi all,

 

My team is building a competitive robot as part of our course work. As all of us are using the sharp IR sensor, I;m thinking of ways to confuse opponent's readings.

 

So far, here's the list I've come up with:

1) mirrors to deflect IR--pasting mirror surfaces around robot

2) IR jam--using IR leds to shoot out beams in all directions

 

I'm thinking of using uneven surfaces that will diffuse the IR beam (not tested yet).

 

Any suggestions to disrupt the sensors?

Maze robot coding

As you may know i have built a maze solving robot that does left hand on the wall currently. I have been trying to add the refining part of the code where it figures out the best path to the end without going down the dead ends (i hope you understand what i mean). Well to do that i need a string of chars and a pointer to tell where to store each char which is a turn like 'L' , 'R', 'B' or 'S'. Ok so every time i turn i need to add 1 to the pointer which i call "path_length" meaning the length of the path ie the number of turns the robot has taken.

Making an variable strength magnet

I am in need of magnets where the strength of the magnet can be varied. Specifically I need 3 "settings", off, low and high. Low would be where the magnets have enough strength to connect but not more strength than they can be pulled apart. High would be where they connect but can't be pulled apart.