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1  Using Arduino / Project Guidance / Re: Powering a floppy drive on: March 05, 2013, 01:54:22 pm
Ok, thanks. I think I have some of those that I can cut off.

I've seen various sources around the internet say it's 5V (this is the 3.5" drive not the 5.25" one). Which would mean it would only use 10 Watts at 2A? And do you have any sources that show it really uses 2A?re'

EDIT: Here's the spec for a random 3.5" floppy drive I found online (http://www.techtravels.org/amiga/SAMSUNG-SFD321B-070103.pdf), and if you look on page 9 (section 2.4) you can see that it uses between 0.3 and 0.7 amps depending on the operation. I'm only going to be controlling the stepper motor (no reads or writes). I'm not sure how much current an Arduino can put out, but 0.7A might be too high... I'll look for some other 5V power source.
2  Using Arduino / Project Guidance / Powering a floppy drive on: March 05, 2013, 01:28:55 pm
I need to power a floppy drive for a project. Currently, I have an ATX power supply powering it, but any five volt source will do, so I'm going to be switching to something smaller. The issue is, I don't know how to connect to the floppy power pins. Here is an image of how it looks:



The pins circled in blue are power pins. I only need two pins, the 5V and the ground pins. Is there anything like a 4 pin female to female connector that will allow me to turn this male power setup into a female one, so I can easily attach some wires to the pins? I tried searching, but I couldn't find anything.
3  Using Arduino / Project Guidance / Attaching a gear motor to a hook on: August 15, 2012, 01:24:25 pm
I'm trying to make an automatic blinds opener, and I'm having trouble connecting my motor to the hook that usually hooks on to the handle that rotates to open the blinds. I can post pictures of what I'm working with later, but has anyone attempted to attach a motor to a hook? Is there a standard part for that?
4  Using Arduino / Motors, Mechanics, and Power / Re: How to control a DC Motor on: May 24, 2012, 02:39:36 pm
Well the motor wasn't turning, and I wanted to make sure I wasn't doing anything stupid. I guess that's not where the problem is.

No problem, just let me know if you get a chance.
5  Using Arduino / Motors, Mechanics, and Power / Re: How to control a DC Motor on: May 24, 2012, 02:28:28 pm
Ok, so I guess I can't use that for debugging. How does the schematic look?
6  Using Arduino / Motors, Mechanics, and Power / How to control a DC Motor on: May 24, 2012, 01:38:09 pm
The playground and youtube haven't been very helpful on this, so I thought it was time to ask it on the forums. I have about a week's experience with arduino and I'm trying to control a DC motor, but it's not working. I don't care about the direction, I'm trying to keep it as simple as possible. I've attached my schematic, is anything wrong with it? When I print out the analog readings from Pin 9, I don't get the values I expect. It always starts off
high, around 900, then drops to around 220 and only move between 210 and 220. So either my schematic is wrong or I've wired it wrong. Here's my code:
Code:
int motorPin = 9;

void setup() {
  Serial.begin(9600);
}
   
void loop() {
  // Accelerate motor from 0 to 255
  for (int i = 0; i <= 255; i++) {
    analogWrite(motorPin, i);
    delay(10);
    Serial.println(analogRead(motorPin));
  }
 
  delay(1000);
 
  for (int i = 255; i >= 0; i--) {
    analogWrite(motorPin, i);
    delay(10);
    Serial.println(analogRead(motorPin));
  }
 
  delay(1000);
}
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