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451  Using Arduino / Displays / Re: LCD Brightness via PWM? on: March 14, 2011, 08:10:51 am
How did you manage to adjust the contrast with PWM?

Cheers,
Kari
452  Using Arduino / Displays / Re: HD44780 LCD Backlight control with PWM on: March 14, 2011, 08:09:47 am
Here's a link for similar info.
http://arduino.cc/forum/index.php?topic=53634.0

Cheers,
Kari
453  Using Arduino / General Electronics / Re: Voltage divider 101 help, any suggestions? on: March 14, 2011, 04:40:11 am
I don't calculate if your divider has correct values, but there is a huge problem; the current is too high. This kind of divider work with very low loads only. You need to understand that your load needs to added as a parallel resistor for the divider, so your circuit changes drastically when load is connected.

When this kind of divider is the only way to get suitable voltages, there needs to be power supply that can handle the total load, and some kind of mechanism to keep partial voltage stable, like zener diode. Not recommended, makes heat, and your resistors are taking lots of the power and will burn.

You say the current is 500mA? It is not possible with that voltage. Only the first resistor 100k with 5V would take I=U/R=5V/100000=0.00005A=0.05mA

What is the device that is connected at the end of the line?

Cheers,
Kari
454  Using Arduino / Displays / Re: How to display many lines on lcd 16x2? on: March 14, 2011, 04:25:14 am
http://arduino.cc/en/Tutorial/LiquidCrystalSetCursor

You need to change the line.

Cheers,
Kari


EDIT.
Please, provide the whole code. What parameters you have in the lcd.begin?
455  Topics / Home Automation and Networked Objects / Re: Help me < I'm newbe> on: March 14, 2011, 03:40:11 am
I'm having problem. i want to make a project. security door with password remote controll. help me for refferences for it. thanks for all

Sorry to say this, but you are so wrong. You don't have a problem, yet. When you start your project, you will get some...
 smiley-grin

Cheers,
Kari
456  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 14, 2011, 03:13:04 am
I think I didn't really get the structure of the playground, I realized that it has ton of links around, where code actually are, and there's a chance to comment them pros and cos.

So, just have to be patient and test the code that might be usable for your application, if problems exists, then the forum is here waiting.
 smiley

Cheers,
Kari
457  Community / Website and Forum / Re: [FEATURE REQUEST] Twitter name in profile on: March 14, 2011, 03:05:58 am
...but Facebook is much more personal than twitter...

I agree. Facebook is too unsafe, and it is personal for keeping in touch with your own close group of people. Well, for most of us anyway.

This hype over the linking everybody with everything and everywhere should be limited. Many of us don't want share our dark secrets with the rest of the world, facebook don't really let us choose, and it changes its policies everyday. Dangerous and irritating.

Twitter is something I don't even use, I just had a similar feelings about it, but I don't have  an actual opinion about it.

Just want to keep reasonableness with this matter of contacting people.

Cheers,
Kari
458  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 04:59:19 pm
Don,
Hmm, this doesn't belong here really, but is that playground full of not well tested and possibly bad instructions? Anybody can send their creations there and look like it's made by someone who looks like he/she knows what they are saying? That's not good...

Cheers,
Kari
459  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 04:52:02 pm
How about this one:
http://www.arduino.cc/playground/Code/SLCD

Kari
460  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 04:44:27 pm
Yeah, I have been crossthinking different topics. Just red this topic again from the beginning. Sorry!

Cheers,
Kari
461  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 04:42:45 pm
I guess I'm not reading between the lines again...

Well, there was nothing between the lines this time.
 smiley

I think I tried to help in a matter that I know nothing about, never tried serial LCD, and perhaps those libraries don't help a bit. So my first assume was close enough, no libraries needed, just direct control like you were already doing.

Anyway, I'm looking forward to learn more about little details of serial LCD's.

Kari
462  Using Arduino / Programming Questions / Re: Need help with arduino on: March 13, 2011, 04:34:32 pm
Would it help if you enable all internal pull-ups for those useless input pins? Then there is no floating pins.

Cheers,
Kari
463  Community / Exhibition / Gallery / Re: Cheap-Thermocam | Thermal Imaging for around 100$ on: March 13, 2011, 04:32:20 pm
Your homepage is annoying, all those pop-ups...
Here's the direct youtube-link for the video: http://www.youtube.com/watch?feature=player_embedded&v=fVilpSSpkDc

I don't know if there's more advantages for moving the mirror only, but the fact that there less mass to be moved for servos. Your version moves softly, and it doesn't seem to suffering about the device on it.

Cheers,
Kari
464  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 04:23:10 pm
Quote
too much english in the instructions.
I'm not sure what instructions you are referring to.

Thanks for your input.
[/quote]

Never mind, seems like an ability to read between the lines is not common...
 smiley-wink

Well, should you try to google and look for "Arduino" + "LCD-libraries"? I bet you save many hours of valuable time with the answer.

Try this: http://www.google.com/search?num=100&hl=en&newwindow=1&biw=1920&bih=1014&q=arduino+lcd+library+%2B%22serial+lcd%22&aq=f&aqi=&aql=&oq=

Cheers,
Kari
465  Using Arduino / Displays / Re: LCD wraps output to 1 or 2 columns on: March 13, 2011, 03:00:08 pm
I think the library is intentionally missing, direct control seems to be the word (two words) of the day.

no245,
Do you have the correct sequency for the display, to initialize it properly?
Iwould like to see and test that too. I'm just too lazy to look for it myself, too much english in the instructions.

Cheers,
Kari
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