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1  Community / Products and Services / Re: 5V Relay Board 8 Channel Connections .. HELP on: September 05, 2012, 07:18:31 am

Hi JanaLaine,

Nice documentation of what You want to do!

But if my old eyes don't trick me, You mixed up the + and - of the 12 Volt supply to Your "external" valves.

0V must go to - minus of Your Valve coil and the + plus 12V get switched by the relays contacts and than must be connected to the +plus of the valves coil.

(+0V as You write is yes the Zero of the + PLUS 12 Volt supply, but "more" negative then the plus 12 Volt.)

rgds
2  Using Arduino / Displays / Re: 4 inch 7 segment display - datasheet on: April 18, 2011, 10:53:57 am
I recently bought huge 4 inch 7 segment display from a local shop. It has 10 pins like the normal 7 segment display.

Unfortunately there is no part number on it and I am not able to find the datasheet for it.

I want to know what is the operating voltage for them. Has anybody used them before?

 

This is a Link to a Data sheet of a 4 inch 7 Segment LED Display. If You also have 10 pins it should be probably the same connection schema. Best You measure the decimal pin with an ohm meter so You know its Common Analog or Common Cathode. The Voltage from the ohm meter should be just enough to check the Dp LED. Careful the polarity of the ohm meter is opposite of the red/black cable.  Than You can use a 12 Volt supply with an 1 Kohm resistor to test all the other segments and measure the actual LED forward voltage on them.

http://www.nb-flying.com/images/NFD-40011ABx-12.pdf
3  Forum 2005-2010 (read only) / News / Re: Free Builder & Free OS on: December 29, 2009, 10:02:23 am
Thanks TchncIFI,

does not look trustworthy . Did You try to find the file on Your Computer?. I use a Mac and the desktop is my normal download area.
4  Forum 2005-2010 (read only) / News / Re: Free Builder & Free OS on: December 29, 2009, 12:46:33 am
Warning !?

When You click the above Link You go to that website but there is also a file  "sa.aspx" downloaded to your desktop.
The file info says something like http://count48.51yes.com/sa.aspx ......

I have not seen this before and I don't like it !!!

5  Forum 2005-2010 (read only) / News / Re: Arduino Mega Photos and preorder @ seeedstudio on: March 25, 2009, 08:46:53 am
ok that's the link


http://www.seeedstudio.com/depot/arduino-mega-preorder-p-311.html
6  Forum 2005-2010 (read only) / News / Arduino Mega Photos and preorder @ seeedstudio on: March 25, 2009, 08:44:57 am
sorry not allowed to post link ( after this I can )

And even a price of US$ 65 is mentioned. They say 19 on stock!!

I see already 3 hours on the web. Ahhhhhh you others are still sleeping ;-)

rgds from the Indian Ocean !
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