if you are going to have any sort of 802.11 wireless to this device, might i suggest a nifty little ip camera.  not too badly priced and can be found in decently small sizes.  Or maybe even use a usb webcam and send that over the wifi connection.  if distance is an issue, you could use a 5.8ghz antennae and some compatible 5.8ghz wifi chip.  but then project costs are getting kind of high.  I'd be interested in if there is a solid way of sending video over a wireless link except wifi

Thanks, hopefully he will find his way to this thread (sent him the link)

I am posting this for another person, I got a message about interfacing the arduino with either VB.net or JAVA and since I am not too much of programmer or software guy I am posting it here for pangetadrian.  Here's the question:

i would like to ask you if it is possible for arduino output to be an input on VB.net or JAVA programming language..and how..


for the reason that i am making a thesis about a virtual glove that will have a finger sensor when one or more finger is bend it will output somehing on arduino, and arduino will output it to vb.net or java...

another question, im going to make a program(using vb or java) that will take that output from arduino, and assign it as a keyboard stroke(when you strike a key on the keyboard)..so that everytime i move my finger a character or set of chacarters will output on a notepad or MSword..is it possible?..

hoping for your reply T_T

pwillard, i wish i could give you more than 1 karma point...the circuit now works wonderfully

for anyone else trying who reads this post and wants a good clean restart without having to modify bootloader or any other "tricks" to reboot their arduino, below is your circuit!

Note:  The pin from the arduino must be set as an output and pulsed low to trigger a reset

UPDATE:  when the arduino drives the the 555 trigger low, the RESET pin of the arduino pin is driven low as it should, however the arduino RESET pin is staying low as the pin from the arduino is in some kind of high z state and so the trigger of the 555 is doing something strange.  Is there some way to fix this or get around the 555 problem?  maybe use a transistor on the trigger and connect the base to the arduino output pin? 
I hope this thread isn't dead yet   

(FYI, the schematic is as shown in the previous post)

Thank you pwillard.  A diagram is always much much clearer than words    The whole inversion thing makes more sense now too.  When I get home I will try and build this circuit and post how it all goes.

Also, for verification purposes or anyone else looking at this thread trying to figure out a way to restart the arduino, attached below is my schematic that i will test later on today....OR not cuz the arduino forum is not allowing that yet, look below:
(edit...sorry for all the white space)

From looking around online, I had seen that using the watchdog aspect of the arduino is not the best idea because with the arduino bootloader it can sometimes get stuck in an infinite reboot sequence which would not be good, as this device will be far far away from any other humans.

The reason I am using an PNP is because I am inverting the signal from pin 3 of the 555 so that pin 3 is always high unless pulsed low by the arduino which then pin 3 is low for a given time, giving the arduino a nice clean restart.  From what I have found, you can use an npn in theory to invert the signal.  However, with a couple different types of NPNs i have, such as the P2222A, I do not get an inverted signal.

My guess as to why RESET is not being driven low is that unless specifically tied to GND directly it is still being held high by internal circuitry (onboard the arduino).  Only problem is, I can't figure out a way around that.  While sitting here in class I will draw up a better circuit diagram to post.

sorry i wasnt clear...the 555 pins on left from top to bottom, 1,2,3,4...and on right from top to bottom 5,6,7,8...the transistor is just a normal common pnp.  i wonder why there isn't too much traffic going on in this forum yet

any idea as to why according to my schematic the reset line of the arduino wouldnt be driven low, when the led is?

no but from what i could find after scouring google is that using a 555 timer was probably one of the best and sure ways to deliver a clear and stable restart.  i just want to be able to issue a restart(); type of command in the sketch

Hi, I'm ecstatic that I'm the first to post a topic here!! Go Arduino! 

Anyhow, I am trying to design a little circuit to properly allow using a digitalwrite command to restart the arduino.  However, whenever I write the circuit the 555 trigger to low, the LED stops working as it should, but the arduino never restarts. I can't seem to figure this out.  Can anyone help out? Below is my schematic, sorry if its messy.
http://i462.photobucket.com/albums/qq345/phinsil6/arduinoreset.png

Thanks a bunch

I really like your idea on the public/private key communication.  Only problem is that Im really quite new to arduino coding.  the stuff you gave me was all javascript type stuff, but as far as i know the arduino cant run javascripts.  is there some native arduino command that will encrypt and decrypt the incoming/outgoing data?

Hi, for a project I'm working on I have a nice little telnet server running however, as anyone knows telnet is not secure much at all.  But something like SSH is very secure.  Does anyone know if it's possible to get a ssh server running on the arduino?  has anyone ever heard of anyone doing this?

thanks

it all works wonderfully now...thank you so much for all of your help.   these forums are so great!!!!

so i uploaded and tried your code and it worked flawlessly thank you.  so then using your code i put it into my main code but everytime i try and compile it i get a "invalid conversion from 'char to 'char*'" error.  heres the bit of code i entered to my main code:

char textCopy[16];
  for(int i=10, j=0; i<26; i++, j++)
  {
    textCopy[j] = textBuff;
  }
  textCopy[3] = '\0';
  textCopy[7] = '\0';
  textCopy[11] = '\0';
  textCopy[15] = '\0';
  char *ptr = textCopy[0];
  int octet[4];
  for(int i=0; i<4; i++)
  {
    ptr +=4;
  }

i woke up this morning and had an idea but im not sure it will work.  what if i did something like this:

char text1[3];
  for(int i=10, j=0; i<13; i++, j++)
  {
    textCopy[j] = textBuff;
  }

char text2[3];
  for(int i=14, j=0; i<17; i++, j++)
  {
    textCopy[j] = textBuff;
  }

char text3[3];
  for(int i=18, j=0; i<21; i++, j++)
  {
    textCopy[j] = textBuff;
  }

char text4[3];
  for(int i=22, j=0; i<25; i++, j++)
  {
    text4[j] = textBuff;
  }

would that copy the 3 values into one new value?  now giving me 4 (3 digit) values?

thanks