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1  Using Arduino / Motors, Mechanics, and Power / What are some good motor controllers for two wheelchair motors ? on: December 20, 2011, 03:22:48 pm
What are some good motor controllers for two wheelchair motors ? they are 24V a piece, and I really want them to be controlled off the arduino smiley

Thanks smiley
2  Using Arduino / Project Guidance / Re: can you make a 240 and 460 volt version of the tweet-a-watt ? on: November 29, 2011, 02:57:11 pm
alright great ! Thanks !
3  Using Arduino / Project Guidance / can you make a 240 and 460 volt version of the tweet-a-watt ? on: November 24, 2011, 06:43:57 pm
Hello, I was wondering if it wold be possible to make a 240 and 460 volt version of a tweet-a-watt or something equivalent to a tweet a watt to monitor the electrical usage on freezers at my father's brewery ? any advice would be great on how to tackle this.
4  Topics / Robotics / Re: help needed for humanoid on: October 28, 2011, 10:15:33 am
I don't want to start a flame war here, but I really am not a huge fan of using the arduino for large amounts of servos, it gets a little sketchy past 3-4 servos unless you are a really skilled in programming, and wiring. the pololu maestro series servo controllers is what I use for servo control for a lot of servos, but I have never tried to interface it with arduino. as for servo selection, do what everyone is saying, get some high torque (the more the merrier) servos and metal gears FOR SURE !!!!!! also, if you have enough space on your bot, make sure your batteries have a lot of Mah. just my advice though.
5  Using Arduino / Programming Questions / Re: Memsic 2125 Programming help !!! on: August 22, 2011, 11:11:52 am
I tried PaulS code and it worked great ! Thanks folks ! This code worked perfect !  smiley-mr-green smiley-mr-green smiley-mr-green smiley-mr-green
6  Using Arduino / Programming Questions / Memsic 2125 Programming help !!! on: August 21, 2011, 07:28:12 pm
I need some help with coding the Memsic 2125 for the Arduino. what I Want to do is make a light appear on the Arduino when the Memsic 2125 recieves 900 or more milli-G's on either axis (X or Y). I however, have a problem I can't seem to fix, I can't make the light stop when the arduino encounters less than 900 milli-G's, and I need to hit the reset button to make the LED stop lighting so that I can re measure the values. so if anyone could edit my code here so that I could be able to have the LED stop automatically when it is less than 900 milli-G's. anyways, here is my code !

Code:

const int xPin = 2; // X output of the accelerometer
const int yPin = 3; // Y output of the accelerometer

void setup() {
  // initialize serial communications:
  Serial.begin(9600);
  // initialize the pins connected to the accelerometer
  // as inputs:
  pinMode(xPin, INPUT);
  pinMode(yPin, INPUT);
}

void loop() {
  // variables to read the pulse widths:
  int pulseX, pulseY;
  // variables to contain the resulting accelerations
  int accelerationX, accelerationY;
 
  // read pulse from x- and y-axes:
  pulseX = pulseIn(xPin,HIGH); 
  pulseY = pulseIn(yPin,HIGH);
 
  // convert the pulse width into acceleration
  // accelerationX and accelerationY are in milli-g's:
  // earth's gravity is 1000 milli-g's, or 1g.
  accelerationX = ((pulseX / 10) - 500) * 8;
  accelerationY = ((pulseY / 10) - 500) * 8;

 

if (accelerationX > 900) digitalWrite(13, HIGH); 
if (accelerationX < -900) digitalWrite(13, HIGH);
if (accelerationY > 900) digitalWrite(13, HIGH); 
if (accelerationY < -900) digitalWrite(13, HIGH);

}

7  Using Arduino / Microcontrollers / Re: Mini Maestro 18, and arduino HELP D: ! on: August 20, 2011, 08:37:34 pm
Ok I read it and I am totally lost, What I really need is just some sample code that makes a servo on the mini maestro move a little bit back and forth, and I need it narrated so I know how to adapt the code for my robot smiley If you could do that I would be really grateful, because I am a noobie at this :I
8  Using Arduino / Microcontrollers / Re: Mini Maestro 18, and arduino HELP D: ! on: August 18, 2011, 11:11:45 am
ok, so now that I know that it works, can I get some sample code for this, or even just some explanation on how to code it ?
9  Using Arduino / Microcontrollers / Mini Maestro 18, and arduino HELP D: ! on: August 18, 2011, 09:37:53 am
Hello, I need some info on how to use the Pololu Mini Maestro 18 Channel servo Controller, with the Arduino, because I want to build A self aware humanoid, but I have no real control over the servos, because the logic for the bot (Which is almost done smiley.) Needs to communicate via xBee, and I really only know how to do that with Arduino :I. All I really want to know firstly, is it possible to do the Mini Maestro and the Arduino Together to control a 16 DOF humanoid ?

here is the link for the servo controller

http://www.pololu.com/catalog/product/1354
10  Using Arduino / General Electronics / Re: What Electrical Component Can Reverse the Polarity of a Circuit on: June 14, 2011, 06:57:40 pm
Ok guys, I;m a little lost here. Relay or H-bridges ? i mean i dont want a serial-controller like the pololu ones (the pololu low voltage dual serial motor controller sucked). the relay seems simpler but the h-bridges seem more effieceint. someone tell me what is better for a 3V motor. like the ones on the tamiya dual gearbox. (p.s im not sour !)
11  Using Arduino / General Electronics / Re: What Electrical Component Can Reverse the Polarity of a Circuit on: June 12, 2011, 09:25:28 am
How do i wire it correctly ? what is your advice ?
12  Using Arduino / General Electronics / Re: What Electrical Component Can Reverse the Polarity of a Circuit on: June 12, 2011, 09:01:08 am
I had to deal with H-bridges a while back, they are terrible, plain terrible. I don't want to use those things ever again, is there anything else that JUST changes polarity ? becasue i already have two transistors for on/off control
13  Using Arduino / General Electronics / Re: What Electrical Component Can Reverse the Polarity of a Circuit on: June 12, 2011, 08:44:46 am
On a 3V motor.
14  Using Arduino / General Electronics / What Electrical Component Can Reverse the Polarity of a Circuit on: June 12, 2011, 08:33:50 am
I want to reverse the polarity of a circuit with some type of electrical component, that doesn't require a human to do a task to change the polarity of the circuit every time (such as a switch, that wont do). What component is capable of doing this ?
15  Using Arduino / Motors, Mechanics, and Power / Re: New Soft Serial Motor Controller Noob Queston on: April 03, 2011, 08:15:31 pm
i Still dont get any movement on any motors, just the same solid green light followed by a blinking green light
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