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16  Using Arduino / Interfacing w/ Software on the Computer / Re: Visual Basic and Arduino Uno Communication on: June 14, 2013, 12:07:24 pm
which version of VB ?
17  Using Arduino / Project Guidance / Re: First post and first project! Need help! on: June 09, 2013, 09:12:59 am
It's a little hard to understand where the Arduino comes into the equation ?

What do you want the Arduino to do?
18  Using Arduino / Interfacing w/ Software on the Computer / Re: Project works, but loses data connection to pc after a while on: June 03, 2013, 04:01:22 pm
How long ago i it that you downloaded GoBetwino ?

I uploaded a version that fixed a bug that would only show up if Arduino was sending data to GoBetwino for a long time.
This would cause the PC to become really slow and semi unresponsive.

19  Using Arduino / Project Guidance / Re: Timer for sequence of events on: May 30, 2013, 03:49:21 pm
If for instance you for some reaon needed to interrupt the sequence, then the blocking nature of Delay() could be problematic.
20  Using Arduino / Project Guidance / Re: Troubleshooting a sluggish push-button program on: May 26, 2013, 11:15:31 am
You have this:


executed with every pass of the loop, Delay is blocking, and nothing goes on for 1 second.

Also you need to debounce your switch (or wire) otherwise you can get switc bounce problems.
21  Using Arduino / Project Guidance / Re: How to make 32 LED's each come on 1@a time for 3 sec each? on: May 25, 2013, 03:47:27 am
You can not directly control 32 LEDs with Arduino, a it does not have that many I/O pins.
The eay work around would be to use 4 74HC595 shift regiters, the you just have your Arduino send 4 bytes of data to the shiftregisters eachtime you need to change which LED i on.

Look in the playground for 595 sample code, it should be fairly imple to do what you want.

A few things you should consider:

Is the time interval between each LEd beeing on always the same?
Do you ever need to have more than one LED on at a time ? (if so you might need a beefer powersupply)
22  Using Arduino / Project Guidance / Re: Suggestion for initiating a 14 yr old into this new world on: May 24, 2013, 01:24:39 am
If your grandson shows interest, one way to start out with Arduino could be to go to one of the many tutorial web sites. is one of many, and one of my favorit places to learn new Arduino stuff.
It starts out with very baic stuff but have enough lessons to learn for a long time.

make sure you have all the needed stuff and make sure you start with the abolute basic stuff.

I think it is totally cool and generally ultra nice to see a grandparent wanting to do what you plan!
23  Using Arduino / Project Guidance / Re: Home automation on: May 16, 2013, 10:23:25 am
I think its overkill  smiley

Also the ethernet shield does not fit the Nano, so you would have to cook your own.

You could do it as simple as creating a RS485 "network" and have each Nano as a node on it.
You could still use the same Json or what ever for wrapping your data.

You can get a simple serial (usb) to RS485 board for the controlling PC.
24  Using Arduino / Project Guidance / Re: Analog User Interface, using spdt toggle switches to open programs. on: May 16, 2013, 02:03:48 am
You should check GoBetwino, it can do what you want (and a lot more)
25  Using Arduino / Programming Questions / Re: gobetwino simple program on: April 20, 2013, 06:53:34 am
When you send the first command to GoBetwino to start Excel, GoBetwino returns the PID to you. You must read and store that number.

This is the number you should send with each subsequent call to your SENDK command.
26  Using Arduino / Project Guidance / Re: Laser communication with photoresistor on: April 19, 2013, 01:45:05 am
Just be aware that photo resistors react slowly.  They have a certain time from they have been exposed to light to they are back to their "dark resistance".
A photo transistor would probably be a better solution in your case.


This might be interessting:

Try to google "Arduino laser modem" that should give you something to go with.
27  Using Arduino / Programming Questions / Re: gobetwino simple program on: April 17, 2013, 12:42:30 pm
Check the GoBetwino user manual page 17
28  Using Arduino / Programming Questions / Re: gobetwino simple program on: April 16, 2013, 10:49:51 am
Check the sample code that comes with GoBetwino, there is an example that does just what you want to do.

You are mising the process id that you should have stored when you called the first command to start Excel.

This should be send in the SENDK commands

29  Using Arduino / Project Guidance / Re: Controlling a Label Maker on: April 14, 2013, 05:36:50 am
This is almost for sure a USB device whitch will make it "not very easy" to control with an Arduino
30  Using Arduino / Interfacing w/ Software on the Computer / Re: Displaying a serial data in textbox of visual basic on: April 13, 2013, 02:08:31 am
Which version of VB ?
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