Let's Make Robots!

Connecting sensors to a computer


iam making a line following robot without using a microcontroller. i was wondering how would i connect my ldr sensors to a computer so data can be analysed. i done some research and i found out that i need an a/d convertor, but iam not sure how to connect it up. :/

my general idea is to get data from sensors that will be send it  to a computer from sensors then the computer will tell the motor whether to turn left or right by stopping either the left motor or the right motor. iam not sure how the computer will send the data to motor wheels any suggestions?

Listen to LMR!

I came across a website called www.codeorgan.com that turns the code of any website into music! put the url for the LMR homepage in, and it sounds pretty good. I wouldn't expect less from LMR.

i have some questions!!!!

hello all........

i have some questions...... help me.


is it important to connect the remaining 3 analogue to V. because i cant understand that part in fRITSL start here robot.

if i want to put LEDs... can someone tell me with some drawings how to connect three LEDs in ur PICAXE,

is this the basic change in code

red LED for left turn( connect this to output 1)

Yellow LED for right turn(connect this to output 2)



high 1:high 6: low 5: low 7: high 4(left turn)

Arduino Duemilanove

I see some robots with the Arduino Duemilanove, is that a good board?

Idea for Challenge? (Much needed!) (saving the fishies!)

I don't know what gave me the idea.. lol, I remember watching a video about this a while back.. but just remembered it today out of the blue.


Basically, it'd need to be small scaled for now, but maybe ideas for the future companies! (and/or countries!) But I can't believe it's seriously gotten to this point... a garbage patch bigger than the size of Texas, in the Pacific Ocean! They find fish and birds as well, their stomaches full of the plastic they ate. (I mean, FULL.. it's more plastic than meat inside of the fish!) But anyways..onto the "Idea":

powering a picaxe

Hello all LMR,

Calculon continues to work on his XMOS challenge, but has once again come across a snag.

The SNAG: He is trying to power his picaxe with a 5v out from a motor controller. It doesn't work.

What should be the resistance between clock, and data on an I²C bus?

trying some i2c devices, though they aren't working, so i thought maybe they where shorting, my cheap multimiter reads 3kohm, is it suposed to be like this?

the device is a cheap ebay nunchuck, made myself a wiichuck adapter with vero board, though i'm measuring the resistance directly from the original socket, so it's not my homemade adaptor thats causing the probems...



Safari problems - popups

Mintvelt posted in an obscure part of the forums about popup problems in Safari. I would like to hear from others as well. That's why I am posting in this forum. More people will notice this in the Recent posts and Unread posts.

All Terrain Vehicle

I want to build a robot that can go just about any where, this includes on flat surfaces, hilly surfaces, and stairs. I don't know how big or heavy this thing will be, but I do plan to drive it with either 2 or 4 black and decker drill motors.


Any suggestions are apreciated.