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1  International / Nederlands / Re: Is dit mogelijk? on: December 14, 2012, 09:31:46 am
Hallo,

Om te beginnen, Arduino is totaal nieuw voor mij...
Voor een project om het huis wil ik zelf iets gaan bouwen maar ik kan nog niet alle onderdelen/mogelijkheden vinden op het internet.
Het gaat om het volgende:

Met mijn Galaxy Nexus wil ik foto's kunnen maken op moeilijke plekken.
Ik wil een soort houder voor de mobiel maken die kan draaien en kantelen en dit wil ik kunnen bedienen via mijn laptop over WiFi ( het liefst met de muis )
Het beeld dat te zien is op het scherm van de mobiel wil ik via hetzelfde WiFi op mijn laptop te zien krijgen.
Voor de Nexus is er een adapter voor een tv-out naar HDMI maar hoe krijg ik dit beeld via WiFi op mijn laptop te zien?
Ik heb gevonden Arduino uno en een DIY Sandbox als WiFi Acces Point maar verder kom ik niet met informatie over video versturen.
Ik wil natuurlijk niet de onderdelen aanschaffen en uitzoeken hoe die werken als ik er uiteindelijk niks mee opschiet.

Hopelijk kan iemand mij in de juiste richting sturen?  smiley-grin


Groeten Harm

Eigenlijk komt dit een beetje neer op een Draadloze camera. Je moet zowieso iets hebben waarmee je het beeld kunt streamen, en dat is niet heel simpel. Ik heb wel eens een webcam tot wireless camera proberen om te bouwen en dat brengt een hoop werkt. Wel weer een voordeel is dat er veel applicaties voor android zijn. Heb je al eens gekeken of er iets van een camera stream app bestaat?
2  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 12, 2012, 11:23:13 am
Try pushing down the metal housing against the circuit board and see if the missing row gets any better. Your symptom resembles some of the defective displays that have poor contact between the glass that has liquid crystal on it and the circuit board that has control circuit on. There are 6-8 metal tabs that hold these two pieces together. If these tabs are loose, your display will not show some pixels. If they are held together but the conductive rubber strips between them is out of place, you may also experience this symptom. You are putting a huge delay in your loop already so I don't think it is refreshing-related problem (refreshing too fast).

When pusing down the LCD the row got better. I pushed it around a bit until it stayed in place properly and it shows the pixels correctly. Only the top row of pixels of the bottom row is not displaying, the letters are too high to fit on. Is this a common problem?

Also changed the code: (not refreshing it and put it in setup instead of loop)
Code:
/*
lcdSetup - Guy
Basic setup for a LiquidCrystal display


Connections:

RS = 12
RW = 11
E  = 10
D0 = 2
D1 = 3
D2 = 4
D3 = 5
D4 = 6
D5 = 7
D6 = 8
D7 = 9

A = 5V   (+)
K = GND  (-)

VDD = 5V  (+)
VSS = GND (-)
V0 = PotMeter Middle Pin

PotMeter:
Right Pin = 5V  (+)
Left Pin  = GND (-)

*/
#include <LiquidCrystal.h> //Include the LiquidCrystal library

LiquidCrystal lcd(12,11, 10, 4, 5, 6, 7); //Setting a LiquidCrystal as 'lcd'
void setup()
{
  //lcd.clear(); //Clear the display
  lcd.begin(16,2); //Define the Length and Rows
  lcd.setCursor(0,0);
  lcd.print("ABCDEFGHIJKLMNOP");
  lcd.setCursor(0,1);
  lcd.print("ABCDEFGHIJKLMNOP");
}

void loop()
{
}

And a pic of how it looks now:
https://www.dropbox.com/s/uoztx47lvxwfsfq/lcdPixels5.jpg
3  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 11, 2012, 12:11:04 pm
Quote
Without this resistor you could damage the LEDs but it is more likely that your power supply is not capable of supplying enough current to do so.  In this case it's output voltage could be dropping and this could possibly be causing the LCD to malfunction.[/color]

I put a 1k resister on the backlight and this fixed only the first character. Don't know what it could be really.
4  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 11, 2012, 11:28:47 am
Quote
But lets go back a step.  What happens when you connect just the backlight, the power, and the contrast (pins 15, 16, 1, 2, and 3)?
Did this, when I put the contrast all the way up only the top row changes contrast. The bottom one doesn't.


Quote
Back one more step - are you using a resistor in series with either backlight lead?

I am not using a resister in series with either of the backlight lead, is this needed?
5  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 11, 2012, 11:09:44 am
Quote
I also tried using all data pins, didn't change anything.

It has nothing to do with external connections.

The lcd is toast.


Damn that, ordering a new one then. Any good places to get one?
6  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 11, 2012, 11:04:01 am
Quote
Hope you can help me out!
You will have to help us out a bit first.

We have to know what type of LCD you are dealing with.

We have to know what program code you are using.

We have to know how your LCD is interfaced with your Arduino.


Don

It's a 1602a LCD, it doesn't say more on the lcd.

Here is my code:
Code:
/*
lcdSetup - Guy
Basic setup for a LiquidCrystal display


Connections:

RS = 12
RW = 11
E  = 10
D4 = 6
D5 = 7
D6 = 8
D7 = 9

A = 5V   (+)
K = GND  (-)

VDD = 5V  (+)
VSS = GND (-)
V0 = PotMeter Middle Pin

PotMeter:
Right Pin = 5V  (+)
Left Pin  = GND (-)

*/
#include <LiquidCrystal.h> //Include the LiquidCrystal library

LiquidCrystal lcd(12, 11, 10, 6, 7, 8, 9); //Setting a LiquidCrystal as 'lcd'
void setup()
{
  lcd.clear(); //Clear the display
  lcd.begin(16,2); //Define the Length and Rows
}

void loop()
{
  lcd.setCursor(0,0);
  lcd.print("Hello forums!");
  lcd.setCursor(0,1);
  lcd.print("Pixels MESS up");
  delay(100000);
}

Here is a pic of the setup:
https://www.dropbox.com/s/77mj452jl205gev/lcdPixels4.jpg
Note: This is a slightly different pin allignment then I now use. But it did the same thing.

I also tried using all data pins, didn't change anything.
7  Using Arduino / Displays / Re: Problem with allignment of LCD on: December 11, 2012, 10:57:07 am
It is defective: the 2nd line should have shown its top row, as the 1st line did.

There are 2 lines missing then, on the bottom row. Could this be a bad connection on the pins? I soldered them myself so it could be.
8  International / Nederlands / Re: help help on: December 11, 2012, 09:44:29 am
Heb je de drivers goed geïnstalleerd?
Zo niet kan ik je best helpen, noteer even je besturingssysteem (windows 7, windows 8, OSX)

MVG,

Guy
9  Using Arduino / Displays / Problem with allignment of LCD on: December 11, 2012, 09:37:25 am
Hello there!

Got my arduino this weekend and started playing around with it and I enjoy it alot. Programming is not too hard as I am studying IT. I got a lcd aswell, it was not to hard to get setup (had to solder pins too it though).

But now I got this:
On the upper row of it starts too high placing the text (1 pixel), this is not a big deal as all text will fit onto it. But on the second row it pushes the pixels up one and pieces of the text fade/fall away. Most of the time with CAPS but some times with normal letters. It also looks like it doesn't use all the pixels it can use (could be wrong here).

To show what the problem is, here are some pictures:
https://www.dropbox.com/s/ag5do0mkytlkyqa/lcdPixels1.jpg
https://www.dropbox.com/s/1yipl0rratirmmt/lcdPixels2.jpg
https://www.dropbox.com/s/6il3z79j5vv1y4p/lcdPixels3.jpg

Hope you can help me out!

Thanks in advance,

Guy
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