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286  Using Arduino / General Electronics / Re: Optoisolate analog input on arduino? on: August 08, 2014, 06:59:31 pm
Something like this can be used:
http://www.analog.com/static/imported-files/data_sheets/AD202_204.pdf
287  Using Arduino / Programming Questions / Re: Counting Pulses on: August 08, 2014, 04:36:06 pm
Take a close look at this:
http://www.gammon.com.au/forum/?id=11504
288  Using Arduino / General Electronics / Re: Directional keypad on: August 08, 2014, 01:16:15 pm
I have also taken an existing keypad and just relabeled the keys to my liking using the same overlay method (you can also print the overlay on colored paper if you don’t want white as the background). Used double stick carpet tape to adhere the overlay to the keypad.
This might be the way you want to go, however there is no room to add back-lights.
You can either ignore the other buttons in your code or use them as function keys
SEE HERE
OR
HERE
289  Using Arduino / Displays / Re: New "Bubble" display! on: August 08, 2014, 12:09:57 am
You can pickup 4 of these displays, make a double board like the one in the attached image, then you can have a 16 digit display with 2 of Bobs Bubble-Licious boards

Edit:
 Actually all you need to do is get two of Crossroads boards as they come with the displays.

1,949 still available
https://www.sparkfun.com/products/12710

Code is V9908
290  Community / Website and Forum / Re: Problem with replies on: August 07, 2014, 11:08:59 pm
After many many years I give up, no more IE
Changed to Crome no more problems!
291  Using Arduino / General Electronics / Re: Best PCB degign for beginner. on: August 07, 2014, 11:00:22 pm
I believe most would suggest "Eagle"
Search these forums, as others have ask this same question.
292  Using Arduino / LEDs and Multiplexing / Re: 9x9x9 LED cube on: August 07, 2014, 10:51:45 pm
"The greatest Oaks have been little Acorns."

293  Using Arduino / General Electronics / Re: Directional keypad on: August 07, 2014, 10:35:29 pm
The switches have tactile feedback.
IMO they are good quality.

I use SketchUp for designing the overlay but any graphics program would do.

You can go to Staples and they will do laminating  for you for a few dollars.
I suggest you use their thinner lamination as their thicker one is quite stiff.

I use this machine for laminating but it is expensive.
http://www.staples.ca/en/3M-LS950-Cool-Laminator/product_41407_2-CA_1_20001
294  Using Arduino / General Electronics / Re: Switching Power with 2N2222 Transistor on: August 07, 2014, 09:26:27 pm
I don't see a base resistor nor do I see a series LED resistor.
295  Using Arduino / Programming Questions / Re: Mapping analog input voltages to digital output pins and latching. on: August 07, 2014, 09:21:55 pm
It's best to show us your code so we can see what you are doing.
Please attach it using code tags.
296  Using Arduino / General Electronics / Put all your I/O in one place on: August 07, 2014, 08:27:23 pm
If you have nothing to do, maybe this is an idea for you to make up.
Takes no pins from the middle area on the breadboard.
Has its own 60 pin header for circuit connection.

Goes great with my new 1284Weeney from Crossroads.
297  Using Arduino / General Electronics / Re: Directional keypad on: August 07, 2014, 07:53:07 pm
Your example?
298  Using Arduino / General Electronics / Re: Directional keypad on: August 07, 2014, 07:43:51 pm
Quote
Sorry for misunderstanding you then.
OK

I have also used:
HERE.
You can either use them in a matrix or wire them to inputs directly.
The attached image is also a good choice.
HERE
They are high enough that surface mount LEDs can be placed by the side of the switches which might give you the back-light that you were talking about.
The LEDs will shine through the laminated overlay.
Then you can make a laminated overlay to cover the switches like I did here in the 2nd image.
299  Using Arduino / General Electronics / Re: Directional keypad on: August 07, 2014, 06:36:23 pm
Quote
really appreciate the condescension.
Click on one of the images that is close to what you need.
This takes you to a web site where you you can see if they have something that might better fit your needs.
I often make what I need as I  cannot really find something that fits.  
Use small push button switches that can be found at sites like Sparkfun.
https://www.sparkfun.com/products/97
Make up the matrix up on a PCB and place an overlay over the switches.
See the attached image on the right hand side of a sample that I made.

I wasn't being condescending in any way.
You might do this in your communications.
I don't.

Edit:

Quote
You can have my permission to be a jackass once you find what I'm looking for.
This is really helpful.
300  Using Arduino / Project Guidance / Re: Project chassis material on: August 07, 2014, 06:13:14 pm
1/4 inch thick wood. Check the lumber yard.
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