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1276  Using Arduino / Project Guidance / Re: touch sensing circuit (not arduino function) on: May 14, 2013, 09:58:31 am
Nope.... says that link suffers from the infection known as URL:Mal

I can probably by-pass the anti-virus, but then, that's what I bought it for....
No idea what's going on then. I can vouch for the company as I have ordered stuff from them several times but that does not mean the website has not been hijacked. I use Firefox + NoStript + AdBlock and have no problems. The company AV is called WebRoot and does not report problems.
1277  Using Arduino / Project Guidance / Re: touch sensing circuit (not arduino function) on: May 14, 2013, 08:39:13 am
How about this. I have a couple of them that tested out fine and work as explained. Just need the killer application to use them in now.

My Avast! anti-virus blocked that site as possibly malicious....
Not sure why unless it's because I linked the search term. What about a direct link to the product.
1278  Using Arduino / Project Guidance / Re: touch sensing circuit (not arduino function) on: May 14, 2013, 08:33:40 am
How about this. I have a couple of them that tested out fine and work as explained. Just need the killer application to use them in now.
1279  Community / Website and Forum / Re: The Forum is Buggy on: May 14, 2013, 05:37:18 am
Buggy? More like unusable. Most topics show empty and refresh/reload does not help.

And when tried to post this the first time I got:
Quote
The last posting from your IP was less than 0 seconds ago. Please try again later.

Before you know it you will be banned again  smiley-twist
1280  Community / Website and Forum / Re: If you see this screen again, report it to an administrator. on: May 14, 2013, 01:55:32 am
Quote
The entire forum is flaky at present, seems to have started after the server swap the other day.

AFAIK you don't actually lose any posts, but you have to refresh to see stuff.
I cannot use the quote button for your post so had to copy and paste.
The system was down most of yesterday but is hopefully on the road to repair now. Has it become a victim of it's own success.
1281  Community / Website and Forum / Re: If you see this screen again, report it to an administrator. on: May 14, 2013, 01:19:51 am
I'm having all the above problems plus hitting the 'Mark Read' button in a group will take me back to first page of that group but not mark the messages as read. I have to hit 'Mark Read' again to complete the job. Also going up a level from there the + sign still shows unread posts in that thread but going back into it shows no unread messages. It's like I have to click everything twice to get the desired and expected action to happen.

EDIT: Further browsing I find the 'Mark Read' button sometimes marks previously read messages as New and other times it does nothing (won't mark messages as read)
1282  Using Arduino / Project Guidance / Re: How to identify the cathode on: May 10, 2013, 01:36:26 pm
Thank you all.
This display has 10 pins, 8 for segments including DP and the other 2 are both for cathodes?
I don't really understand the diagram
Pins 3 & 8 are the cathodes, pins 10,9,7,5,4,2,1 & 6 are anode. The letters A to G are the segment names and DP is the decimal point. If the segments are small/low power then connect the anodes (through resistors) to arduino pins configured as output and connect 3,8 to arduino GND. When you set relevant arduino pin to HIGH the segment should turn on, LOW will turn it off.
1283  Using Arduino / Project Guidance / Re: Arduino version for permanent installation on: May 10, 2013, 01:16:36 pm

That looks really great value but you said above you need 32K for program + 32k for data so will also need to add on the cost of external flash/EEPROM. If your building 60 then have you considered making a custom PCB?
1284  Using Arduino / Project Guidance / Re: How to identify the cathode on: May 10, 2013, 01:03:58 pm
The 7 segment display is just 7 leds (8 if you have a decimal point) that have either the anode or cathode connected in common. The LED specifications and pin numbers used for each segment varies from manufacturer to manufacturer so you really need the datasheet to determine pin numbers and current limiting resistor sizes.

EDIT: To add image that went missing.
1285  Using Arduino / Project Guidance / Re: Arduino version for permanent installation on: May 10, 2013, 12:41:41 pm
Maybe the Teensy++ 2 or Teensy 3 here
1286  Using Arduino / General Electronics / Re: RTC: how important is the capacitance of the crystal? on: May 10, 2013, 08:36:00 am
The correct frequency crystal is important for an RTC as just a slight difference in frequency will effect the clocks accuracy.
Temperature will effect the crystals speed so you may get variable time drift throughout the seasons.
I bought a DS1307 module and it looses approximately 7 seconds per day so ever since then I use DS3231 instead. They are a bit more expensive but have internal oscillator and temperature compensation so maintain time a lot better (less than a second per day)
1287  Using Arduino / Sensors / Re: How to read a pulse train asynchronously on: May 09, 2013, 11:30:03 am
Could this be simply done with a pin change interrupt that notes the millis() value on a rising edge and then subtract this from millis() on the falling edge and stores the result for the main thread to pick-up at leisure.
1288  Using Arduino / Programming Questions / Re: Decimal Point Problems. How to make a variable value of 1.35? on: May 09, 2013, 03:37:30 am
Your using an 'int' variable that can only hold whole numbers (no fractions).
Try changing 'int valueVolts' to 'float valueVolts' as the 'float' type can hold floating point values (with fractions).
1289  Topics / Science and Measurement / Re: Control of Gilson Minipulse 3 pump with Arduino on: May 08, 2013, 08:29:39 am
A pullup resistor?
1290  Using Arduino / Displays / Re: barcode display on: May 07, 2013, 03:43:16 am
While not as cheap as a typical LCD you can use an e-paper display, Adafruit sells a few graphic eInk dev boards for roughly $35 USD which are advertised as being able to produce a barcode readable by a laser scanner. 
In the UK Barnes & Noble have reduced the price of there 'NOOK Simple Touch eReader' to £29 ($45). I hopefully have one on the way and will then face the dilemma of using it as a book or hacking it to see if I can use the e-ink display.
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