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1  Using Arduino / Microcontrollers / How can I reburn the duemilanove bootloader? on: July 15, 2014, 08:00:13 pm
I bought an atmega 328 pu chip and come to find out it has the uno bootloader preloaded. Anyhow, I need to upload the duemilanove bootloader since that is my board. How do I do this?
2  Using Arduino / Motors, Mechanics, and Power / Re: Need help with RAMPS (reprap 3d printer shield for mega) on: July 10, 2014, 11:11:36 am
I have four steppers in total. My three axis drive motors are these:
http://www.ebay.com/itm/NEMA17-17-Stepper-Motor-36oz-in-2600g-cm-3D-Printer-RepRap-Medel-Prusa-/331084351443?pt=LH_DefaultDomain_0&hash=item4d162a47d3 They are 12v and 0.4 amps/phase. I have 3 sparkfun easydrivers to drive them if needed. My extruder motor is five volts 0.84 amps/phase. Lastly, the RAMPS controller I bought a-la-cart here: http://www.ebay.com/itm/111322422790?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
3  Using Arduino / Motors, Mechanics, and Power / Re: What kind of Driver and stepper motor should I use? on: July 09, 2014, 11:14:59 am
Not sure what motor you're using, but this is by far the best deal!

$2.33 (plus $1.00 shipping for the first item and free additional) for the easydriver shield which is normally $14.95 from sparkfun and is backordered there.

http://www.ebay.com/itm/EasyDriver-Shield-stepping-Stepper-Motor-Driver-V44-A3967-For-Arduino-/400522271040?pt=LH_DefaultDomain_0&hash=item5d40fcd940

The easydriver is quite simple to use and works well in my experience.
4  Using Arduino / Motors, Mechanics, and Power / Need help with RAMPS (reprap 3d printer shield for mega) on: July 09, 2014, 11:09:55 am
I just got a new RAMPS board in the mail.  smiley-lol

1. Can you hook the steppers directly to RAMPS board. If so, how much current per phase can it handle?

2. Does anyone know of any good tutorials for wiring the prebuilt board?

3. If you cannot hook the steppers up directly, how do you connect an easydriver to this since I have some?
5  Using Arduino / Motors, Mechanics, and Power / Re: 1KW motor control on: July 09, 2014, 11:06:37 am
For a simple solution you may be able to use a solid state relay. Solid state relays activate almost instantly. You can control the speed on it by hooking it to the Arduino pwm port.
6  Using Arduino / Motors, Mechanics, and Power / Re: Anyone know ho to use this CNC breakout board with Arduino and or easydriver? on: June 03, 2014, 10:50:09 am
Yeah what this one does is it plugs into my computer and sends out a signal based on what the CAD software tells it.
7  Using Arduino / Motors, Mechanics, and Power / Re: Anyone know ho to use this CNC breakout board with Arduino and or easydriver? on: June 03, 2014, 10:43:24 am
*CNC controller* not stepepr driver...sorry only provides 5v logic signal not power.
8  Using Arduino / Motors, Mechanics, and Power / Anyone know ho to use this CNC breakout board with Arduino and or easydriver? on: June 03, 2014, 10:42:39 am
How would I integrate this stepper controller with my Arduino and easy driver to use as CNC?

http://www.ebay.com/itm/USB-5-Axis-CNC-Breakout-Board-Interface-Adapter-For-Stepper-Motor-Driver-/321133023129
9  Using Arduino / Networking, Protocols, and Devices / Re: Can I use this ethernet header with arduino? on: May 29, 2014, 08:36:35 pm
So like this one right: http://www.ebay.com/itm/1-2PCS-ENC28J60-Ethernet-LAN-Network-Module-Schematic-Arduino-SPI-AVR-PIC-LPC-/251472502315?pt=LH_DefaultDomain_2&var=&hash=item3a8cedde2b

Also, out of curiosity, what does the shield do exactly other than break out the pins. What does the IC on it do?
10  Using Arduino / Networking, Protocols, and Devices / Can I use this ethernet header with arduino? on: May 29, 2014, 08:22:13 pm
Can I use this simple ethernet pcb header with arduino by just plugging it into a breadboard and routing the pins to the arduino digital pins?

 http://www.ebay.com/itm/1pcs-RJ45-PCB-JACK-CAT5-5E-6-10PIN-CONNECTOR-modular-network-plug-cable-ethernet-/301147774951?pt=US_Surveillance_Cables_Adapters_Connectors&hash=item461dce5fe7
11  Using Arduino / Project Guidance / Re: 2.4 ghz transceiver with arduino for wifi on: May 22, 2014, 08:43:52 pm
Ok, thanks for the response. Maybe I can get some of these on a different frequency (so it wont mess with my wifi connectivity) and use a peer to peer system for wireless between two Arduino boards.
12  Using Arduino / Project Guidance / 2.4 ghz transceiver with arduino for wifi on: May 21, 2014, 01:49:26 pm
Can I use this item to connect Arduino to wifi?
http://www.ebay.com/itm/2PCS-Arduino-NRF24L01-2-4GHz-Wireless-Transceiver-Module-New-/170819064718?pt=LH_DefaultDomain_0&hash=item27c59c138e

It's much cheaper than shields. Not a big fan of shields anyway. If I wanted to pay someone 3x as much to build my electronics for me, I wouldn't be playing with the Arduino.
13  Using Arduino / Motors, Mechanics, and Power / Re: Servo twitching on: August 12, 2013, 08:55:48 am
Sorry for the late response, we lost our home internet. But anyways, i'm powering the servo using the ground and the +5 on the arduino board.
14  Using Arduino / Motors, Mechanics, and Power / Servo twitching on: July 25, 2013, 10:28:46 am
I have this servo: http://www.ebay.com/itm/HOE-SEL-SG90-9-Gram-Micro-9g-Servo-For-RC-Airplane-Car-Boat-US-Sel-/151049686413?pt=US_Scissors_Shears&hash=item232b434d8d

I'm using it with this code:
Code:
#include <Servo.h>
 
Servo myservo;  // create servo object to control a servo
                // a maximum of eight servo objects can be created
 
int pos = 0;    // variable to store the servo position
 
void setup()
{
  myservo.attach(10);  // attaches the servo on pin 10 to the servo object
}
 
 
void loop()
{
  for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees
  {                                  // in steps of 1 degree
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees
  {                               
    myservo.write(pos);              // tell servo to go to position in variable 'pos'
    delay(15);                       // waits 15ms for the servo to reach the position
  }
}

When I run the code the servo just keeps twitching on and off. I've verified the connections and they're correct. If I move the servo by hand a small bit it begins to move then it starts twitching again. It seems that the issue is that it's not moving enough to get to the next tooth on the servo gear, so it is in an endless loop of moving a small bit and then springing back. I've checked the servo and the teeth are not stripped out. I've tried changing the degrees and the delay in the code and it didn't seem to help, but I appreciate any help offered and I'm open to suggestion.

Thanks, Michael
15  Using Arduino / Project Guidance / Re: Arduino Bios Programmer on: August 16, 2012, 03:43:27 pm
I can't really find any information on this, I've tried to research it but I'm confused.
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