Show Posts
Pages: [1] 2 3
1  Topics / Education and Teaching / Re: Where to start and where to go from there? on: June 17, 2013, 02:05:47 pm
Support a new Arduino based product to learn / teach the Arduino platform.  Currently on KickStarter.  www.DuinoKit.com 
2  Community / Gigs and Collaborations / Looking for some programming assistance - willing to pay. on: May 27, 2013, 10:21:09 pm
I often have little projects I'm working on and need a collaboration buddy or just someone to get the project started as I am learning programming.

Is there anyone out there willing to help out?

Example project....

Here is a project that will learn "x" IR codes and then use them to change the brightness level of an LED.

http://www.buildcircuit.com/infrared-sensor-with-pwm/

I am looking for someone that can add in the ability to save these codes in EEPROM so they will not have to be relearned upon power-up.  The first few seconds after power it can listen for a new code sequence, if none are found, proceed with what is in memory.

Anyone interested in taking on this (and possibly other) project(s)?
3  Using Arduino / Programming Questions / I miss vWorker.com - Beginner help! on: May 27, 2013, 09:40:04 pm
Can anyone refer me to a place where I can fine some programmer willing to help on some Arduino Projects?  I used to hire people form vWorker.com and they have been bought out by Freelancer.com but only allow starting projects at $30. 

I often have very small projects or simply need a little help getting something started. 

Any suggestions?
4  Using Arduino / Programming Questions / Playing with WiseDuino, having errors on: February 26, 2013, 07:21:18 pm
I recently stater playing with the shield trying to get a WiseDuino as found here...

http://timewitharduino.blogspot.com/2009/07/introducing-wiseduino.html


I've been playing with it and cannot get the quotes.txt file to upload to the EEprom.  I receive the "Path Not Found" in line 13.  (Code Below)

Code:
Const ForReading = 1
Const ForWriting = 2

'------------------------------------------------------------------------------------------------
' open USB serial port (COMx);
'
' If the serial monitor in Arduino IDE is open, you will get an "access denied" error.
' Just make sure that the serial monitor is closed (so bytes are not sent by the arduino board).
'------------------------------------------------------------------------------------------------

Set fso = CreateObject("Scripting.FileSystemObject")
'Set com = fso.OpenTextFile("COM7:9600,N,8,1", ForWriting)
Set com = fso.OpenTextFile("\\\\.\\COM12:9600,N,8,1", ForWriting)

'---------------------------------------------
' read content of text file line by line;
' write line to COMx;
'---------------------------------------------

Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFile = objFSO.OpenTextFile("c:\quotes.txt", ForReading)
'Set objFile = objFSO.OpenTextFile("C:\Users\daniel.alich\Dropbox\Alich\arduino-1.0.3\My Arduino Projects\WiseClock1.0.3\WiseClockquotes.txt", ForReading)

MsgBox("Ready to write file content to COM")

   Do While objFile.AtEndOfStream <> True
      '---------------------------------------------------------------------------------------------------------
      ' read 10 characters at a time; arduino serial buffer cannot take more than 32 characters;
      ' writing a character to eeprom takes about 11 ms (assuming that there is no serial.prints in the loop);
      ' therefore, after each batch of 10 chars sent to COM, we should wait no less than 110 ms;
      ' we use 200 to have a margin of safety;
      '---------------------------------------------------------------------------------------------------------
      strChars = objFile.Read(10)
      com.Write(strChars)
      WScript.Sleep(200)
   Loop


objFile.Close
com.Close()

MsgBox("Finished writing to COM")

 

Has anyone been working on this in the past that can help.  I've tried different computers and Com ports.  The file IS where I am pointing and I have tried different locations.  Am I missing something?

Thank you in advance.
Dan


Moderator edit: link corrected.
5  Using Arduino / Programming Questions / Re: Setting 1307 RTC to computer time during compile on: February 04, 2013, 09:33:48 pm
I simply want my project to be set for the current date and time when the program is compiled and the RTC will maintain that time and date when project is powered down.

I know it will be off slightly due to compile time, but just trying to get close.

Dan
6  Using Arduino / Programming Questions / Setting 1307 RTC to computer time during compile on: February 04, 2013, 09:05:08 pm
I have been looking for a way to set the RTC time to current computer time when compiled.  I found the following code HERE. ( http://www.ladyada.net/make/logshield/rtc.html )

Code:
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib

#include <Wire.h>
#include "RTClib.h"

RTC_DS1307 RTC;

void setup () {
    Serial.begin(57600);
    Wire.begin();
    RTC.begin();

  if (! RTC.isrunning()) {
    Serial.println("RTC is NOT running!");
    // following line sets the RTC to the date & time this sketch was compiled
    RTC.adjust(DateTime(__DATE__, __TIME__));
  }

}

void loop () {
    DateTime now = RTC.now();
    
    Serial.print(now.year(), DEC);
    Serial.print('/');
    Serial.print(now.month(), DEC);
    Serial.print('/');
    Serial.print(now.day(), DEC);
    Serial.print(' ');
    Serial.print(now.hour(), DEC);
    Serial.print(':');
    Serial.print(now.minute(), DEC);
    Serial.print(':');
    Serial.print(now.second(), DEC);
    Serial.println();
    
    Serial.print(" since 1970 = ");
    Serial.print(now.unixtime());
    Serial.print("s = ");
    Serial.print(now.unixtime() / 86400L);
    Serial.println("d");
    
    // calculate a date which is 7 days and 30 seconds into the future
    DateTime future (now.unixtime() + 7 * 86400L + 30);
    
    Serial.print(" now + 7d + 30s: ");
    Serial.print(future.year(), DEC);
    Serial.print('/');
    Serial.print(future.month(), DEC);
    Serial.print('/');
    Serial.print(future.day(), DEC);
    Serial.print(' ');
    Serial.print(future.hour(), DEC);
    Serial.print(':');
    Serial.print(future.minute(), DEC);
    Serial.print(':');
    Serial.print(future.second(), DEC);
    Serial.println();
    
    Serial.println();
    delay(3000);
}

All I receive in the serial is text similar to " Ã,FB'ÀOÿ# áƈG\B&À,þ&5Q½ˆ....." about every 5 seconds

I keep seeing the same example and cannot get it to work.  I have an UNO running V1.0.3

Additionally I was trying to change the I2C pins for the RTC as the pad for A4 came detached.  Is this possible, I tried the following with no luck.

Code:
pinMode(A4, INPUT);
pinMode(A5, OUTPUT);


Thank you in advance
7  Using Arduino / General Electronics / Re: Detecting Electricity Useage on: December 30, 2012, 01:26:11 pm
Thank you.  For some reason I did not consider looking for "Current Sensor" on eBay.  I think I found what I am looking for.

In two weeks (from China) I'll find out!

Dan
8  Using Arduino / General Electronics / Detecting Electricity Useage on: December 30, 2012, 09:03:07 am
Is there some sort sensor/circuit that could be used to detect when power is being used.

I would like to make a timer device that would be triggered and could track when and how long an electrical appliance is being used.

Example, sense what a computer of refrigerator is actually drawing power.  It does not have to know how much electricity is being used, but maybe send a rough value that could determine a trigger point when something is running.

Is there some sort of sensor or can an arduino circuit be built for this purpose?

Thank you in advance,
Dan
9  Using Arduino / Displays / Re: Shift registers? Display Drivers? Comparison on: December 26, 2012, 10:32:41 pm
Yeah, I was hoping someone had already done this.  I do not know enough yet.  Is there a explanation/comparison chart or article?

Cheers,
Dan
10  Using Arduino / Displays / Shift registers? Display Drivers? Comparison on: December 26, 2012, 10:17:40 pm
Is there a good comparison chart of information that can explain the differences in shift registers or LED display drivers.  I have been using the Max7221, but I an curious to know differences or reasons for using other things that seem to pop up.

Ex.  max7219, max7221, 74HC164, TLC5940, 4021?   ????

Thank you in advance for your help.
11  Using Arduino / Displays / Help using an 800X600 Touch LCD with Arduino on: December 11, 2012, 09:46:13 am
I have some Xybernaut Atigo M (DT375) wireless panels that have a 800X600 color LCD touch screen.  Currently these are running Win CE .net 4.2

I was wondering if it would be possible to use these touch screen panels in conjunction with an Arduino?  If these is someone out there willing to test and send back instructions, I would be willing to supply a set-up for propose of testing.

Let me know your thoughts.

Dan
12  Using Arduino / General Electronics / Re: TSOP4838 IR decoder - "Random" noise on: November 12, 2012, 06:16:30 pm
I added in the .1uf cap and 100 ohm resistor and noticed no difference in filtering noise.

I took power (3.3V) for the TSOP4838 from a separate UNO board and it seems to be running very well,  When I pull power from my project board, I get MANY false and apparently random IR codes.

I may try switching over to the Nano board as it has 3.3v, but I wonder what is causing this....  Could by board be having voltage fluctuations that are giving false Ir codes.  It has multiple blinking LEDs that "may" be drawing too much current?

Let me know is something else comes to mind.  The cap and resistor does not seem to have made any difference.   smiley
13  Using Arduino / General Electronics / Re: TSOP4838 IR decoder - "Random" noise on: November 12, 2012, 12:04:33 pm
Thank you.  I'll take a look for this info.

Dan
14  Using Arduino / General Electronics / TSOP4838 IR decoder - "Random" noise on: November 12, 2012, 10:46:54 am
I am using a TSOP4838 IR decoder as hooked up below.

Pin 1 - Digital signal in
Pin 2 - Gnd
Pin 3 - +5v

I'm displaying the received codes in the serial monitor and it works fine. until I hook it in my project.  I am than getting many "random" codes that persist even when the IR receiver is completely covered from outside light. I found earlier that if I changed the input voltage to 3.3V that is seemed to lessen the random codes in my application, however I am now trying to change my program over to a mini-pro board and there is no 3.3V pin to pull power from.

Is there something I am missing on this component or it there a better Ir decoder that will work with fewer random codes being received?

Additionally, I am trying to see if I can use a RTC1307 and the decoder on the same input pin (A5). (ran out of I/O pins) This seems to work fine until I have the board running my full application.  I think the IR and RTC codes are properly recognized, however I think that power fluctuation on the board are causing what appears to be "random" codes to appear from the TSOP4838.

15  Topics / Education and Teaching / Re: Classroom Kit - I need your help. on: September 19, 2012, 07:38:27 am
I was unable to raise the funds necessary for a 250 board run on KickStarter.  I based my price on US assembly and production and I am working on some other ideas.

A simple kit of parts would be cheaper.  There are many various kits of parts available and I don't simply want to add to the collection.  The idea of my kit will keep all the parts contained and easy to hook them up for projects.  Additionally, a collection of parts will not last very long in a classroom or typical adolescence learning process. 

I am planning on trying to produce the kit with outsourcing and possibly run it on KickStarter again.  I will have a firm design and prototype already built for examination and purchasing.

I'm working on the details now.
Pages: [1] 2 3