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12811  Using Arduino / Project Guidance / Re: loop only runs once on: September 05, 2012, 11:11:58 am
You may be checking 16 bytes but your buffer is only 15 bytes long.

12812  Community / Bar Sport / Re: Need help for choose a monitor on: September 05, 2012, 08:40:18 am
One of my monitors at work is the 24 inch version of the Samsung.
It is rubbish - poor viewing angle and poor colour reproduction.

My two cents
12813  Using Arduino / Displays / MOVED: Need help for choose a monitor on: September 05, 2012, 08:35:26 am
This topic has been moved to Bar Sport.

http://arduino.cc/forum/index.php?topic=121603.0
12814  Community / Website and Forum / Re: Moderation's moderator... on: September 05, 2012, 07:33:38 am
If you think your handling here was rough, imagine what it could be like on a Glock forum!

Quote
Besides, when did "being French" become an excuse,
Quite right - for special treatment, you have to be a French farmer     smiley-yell
12815  Using Arduino / Programming Questions / Re: Error while compiling/uploading when ethernet shield is connected on: September 05, 2012, 07:17:11 am
Quote
But the answer was intentionally provocative.
You are correct, it was intended to provoke you to post more details.

I guess I failed again
12816  Community / Website and Forum / Re: Moderation's moderator... on: September 05, 2012, 06:55:32 am
Quote
Perhaps you get a good trip when you banish a member
You're absolutely right.

I ban maybe a couple of dozen "members" a day.
Usually because they sign up with usernames like "MoronMoron765" and signatures like "Sacramento florist/Toronto locksmith/Aberdeen escorts/Cheap fake sunglasses/sport shoes/NBA shirts/pirated software" (all highly relevant to the Arduino community, I'm sure you'll agree), or because they actually get through and post thirty or forty copies of their massive SEO campaign before we get to them, and then have to delete the posts one-by-one.

In between times, someone who may or may not know better posts the same question in different parts of the forum, forgetting that a member answering in one thread may not see the response that has already been given in another part of the forum.
This wastes members' time, which is the one thing we all give freely, and yet which is so precious.

If you want to continue benefiting from this community, I suggest you continue your military metaphor, and fall in line.
12817  Using Arduino / Programming Questions / Re: Indoor Air Quality (IAQ) Sensor via I2C on: September 05, 2012, 06:07:57 am
Third: DON'T CROSS-POST
12818  Community / Website and Forum / Re: Moderation's moderator... on: September 05, 2012, 06:06:14 am
Nick's a polite guy.
Me, I'd've merged all your cross-posts into one, and left you to sort out the mess.

CROSS-POSTING WASTES TIME - DON'T DO IT.

Clear enough?

You have close on 200 posts - surely you must've noticed how antipathetic the forum is to cross-posters?
Moderators are just like a concierge (the kind you used to get in French apartment buildings) - we have to clean up after other people.
As it happens, your cross-posts were reported by another member.

(I'm in Europe too - the bit de Gaulle didn't want in)
12819  Using Arduino / Programming Questions / Re: trying to make a library "multiple definition of '#var' on: September 05, 2012, 04:41:07 am
Quote
Which is a good argument for NOT using one letter variable names.
It doesn't matter if the variable name is "a" or "antidisestablishmentarianismInitiator", the scope (pardon the pun) for confusion is still there:
Code:
extern int antidisestablishmentarianismInitiator = 12;
in one file and
Code:
extern int antidisestablishmentarianismInitiator = 11;
in another is going to confuse. Only the implicit global should be initialised.
12820  Using Arduino / Programming Questions / Re: trying to make a library "multiple definition of '#var' on: September 05, 2012, 04:15:51 am
Code:
extern int a = 7;
extern int b = 6;
extern int c = 5;
Think about the scope for abuse here.
Another file could quite legitimately have
Code:
extern int a = 5;
extern int b = 6;
extern int c = 7;
Which is why you got the warning.

Which set of initialisers is the correct one?
12821  Using Arduino / LEDs and Multiplexing / Re: LED code question on: September 05, 2012, 03:05:32 am
Think of it like
Code:
memcpy( PatternBuf, &PatternTable [PatternIdx], PLANESIZE )

Please use code tags when posting code.
12822  Using Arduino / Sensors / Re: Ulra-high sensitivity range finders? on: September 05, 2012, 01:45:03 am
Non-contact measurements like this are probably best made with a laser parallax device like a Keyence.

Ultrasound at hobbyist prices is always going to be tricky, if not impossible.
Wavelength in air at 40kHz is around 8 or 9 mm, so measuring smaller displacements will rely on fiddly phase comparisions, which the standard hobby devices are simply not capable of.
12823  Using Arduino / Project Guidance / Re: LOW Voltage on PWM on: September 04, 2012, 02:54:08 pm
Vf is the forward voltage drop of the LED in the optocoupler, found in the device's data sheet.
12824  Using Arduino / Project Guidance / Re: LOW Voltage on PWM on: September 04, 2012, 02:50:00 pm
Did you read reply #2?
12825  Using Arduino / Project Guidance / Re: LOW Voltage on PWM on: September 04, 2012, 02:44:25 pm
You NEED a current-limiting  resistor.
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