Let's Make Robots!

my first project

It might work, but I am not that much concerned with pressure applied to the given surface. And I can’t use motor amp changes to indicate when the “leg” is in contact with a surface because of inertia and movement speed of the “leg” that constantly changes. My pressure applied so to speak of will only be applied for rather short time periods and would almost constantly differ in pressure.

wireless camera and remote control.


i am very much interested in making metal detecting robot..but i am confused that which kit board you used and all other relevant information related to wireless camera...and what type of communication you used? is it radio frequency.infra red or blue tooth?? if possible then try to mail me at-   arora_grv030@yahoo.com       i will be very thankfull to you.... 

PIC16f84A line follower robot

can anyone help me how to build a line follower mobot with the CPU of PIC16f84a... pls post the components and the schematics..and if it is possible some code segments...

Embed Audio Signals?

So I got this nifty iPod plugged into Walter and I can easily control it with serial commands. If I were to want to sync say, movements of the head to the audio being played, I now can only do it manually... I.e. I would actually use a stopwatch and time when I would want each move to start/ continue and add the needed pauses to the code.

Motor control

hi all,

does anyone know if its possiable to control the speed of a stepper motor/ Dc motor with a pot?

also if you have any schemtics on how to do this it would be helpful

 thanks to anyone who replied :) 

Robotic frustrations

I'm sure many of you have been in the situation where you are making some simple part for your robot, it should be an easy job, maybe 15-20minutes tops but something goes wrong.  3 frustrating hours later (or more) you finally get it finish after trying to work out what went wrong.

It's 10:30pm on a Saturday night, I've been in the office since 11am making an Xbee remote control for demonstrating the 6WD robot chassis so we can make a video. I should have been finished hours ago and relaxing in front of the TV but I couldn't get a LM317LZ regulator to put out 3.3V for the Xbee.

XMOS XK-1, configuring to work with HD44780 LCD.

Well this is the first actual hardware I'm going to interface! (I tried with my color LCD.. but when that failed.. figured I should start a bit more simple)

 The code is borrowed from a MIDI Synthesizer project, I just took out the LCD part, along with the buffer code. He was using the XC-1, which is just a 4-core version of the XK-1. The code should be fairly easy to implement, but I'm afraid I'm missing some of the basics when it comes to the XMOS pin usage. (I've gone through the tutorials and understand them for the most part)


Which microcontroller?

Let me start out with saying that I bought a Picaxe about a year back and had absolute horror getting it to work with my PC. Nothing I did would work. I've been traveling for a long while now and am finally settling back down a bit, so I'm wanting to get started back in robotics.

I haven't built my first bot yet, but will be buying supplies soon. Can anyone recommend another MC instead of the Picaxe? Maybe the Arduino? Preferably something that has a good support group I can go to if I get stuck... which is more than likely.


Motor with Arduino

Ok, I've read around a bit, and I'm still not certain about how to power a motor with Arduino. I'm looking for the absolute simplest way possible. I don't really want to buy a controller or anything. I was wondering if I could use a 9v battery combined with a MOSFET to power a 9v motor. Would this work?

 Would this also allow for speed control?