Show Posts
Pages: 1 ... 464 465 [466] 467 468 ... 944
6976  International / Nederlands / Re: uitlezen code arduino on: October 28, 2012, 11:18:22 am

Hangt ervan af, als je ruimte in RAM en PROGMEM hebt maakt het in feite niet uit.
Maar omdat je meer PROGMEM hebt is jouw voorstel eigenlijk wel beter, temeer omdat de string automatisch read-only is.

in short => yes!
6977  Using Arduino / Project Guidance / Re: Real time wireless video on: October 28, 2012, 07:26:33 am
Just ask if you need anymore info.
Where to start...

My question is could the arduino wifi sheild transmit real time video

You should build a Robot that can be controlled by Arduino(see below) and add e.g. a wifi webcam like dericam - -

You can control that remotely as long as you have wifi connection.

I think wifi is not the way to go in a Nuke plant as all the concrete will be reinforced and won't allow signal. Or you should send a dozen repeaterRobots to create a chain of tcp/ip routers. Using a cable is more reliable.

Furthermore be aware that the Arduino and the dericam are not radiaton hardened as far as I know. That means it can be fried just when the video gets interesting and that can be quite fast...

6978  Using Arduino / Programming Questions / Re: code for 4*4 keypad on: October 28, 2012, 07:22:34 am

Please do not cross post on different subsections: -,129490.0.html

Can you post the code you have sofar?

Can you get the 4x4 working normally? There is a library for that, although I have no link at hand (search the palyground) . That is the first step.
If you have the 4x4 working you need to add a timing in the keystrokes so that if a key is pressed within 0.3 sec. the a changes in b,

To get this working you probably need to make a design on paper first to get the conditions/behavior 100% right.
This is a typical problem that looks relatively simple but isn't. // I know I just tried smiley-wink

6979  Using Arduino / Storage / Re: Calculating csv file size on: October 28, 2012, 06:55:57 am

Can you be more specific?

What OS?
What is in the CSV?
How many fields?
What datatype is every field?
How do you want to send the data?
- binary/ascii
- uncompressed/compressed
- otherwise

The more you tell about the problem the better help you get

6980  Using Arduino / Project Guidance / Re: Printer plug in device on: October 28, 2012, 06:32:00 am
How is the printer connected? Serial ?
Do you have a type number of the printer?
6981  Using Arduino / Programming Questions / Re: Direct Port Manipulation Through a variable - help on: October 28, 2012, 04:39:37 am

your code makes a copy of the value in the port, you should write it back.

thePort = PORTB;
thePort ^= 255;
PORTB = thePort;

6982  Using Arduino / Sensors / Re: Displaying problems with DS18B20 on: October 28, 2012, 04:36:11 am

another idea:
Could there be a conflict between the Dallas lib and the LCD lib? shared pin or so?

which version of the dallas lib are you using?
6983  International / Nederlands / Re: uitlezen code arduino on: October 28, 2012, 04:31:41 am

Je kunt dat doen met AVR-DUDE.EXE maar je krijgt dan de gecompileerde (binaire) file. Deze kun je deze omzetten naar assembly met OBJDUMP.EXE

Je krijgt dus geen sourcecode, maar mogelijk voldoende info om te bepalen welke versie 't was.

Tip voor de toekomst, begin je sketches met ...

char sketchName[] = "MyFirstApp 0.1.1";  // of versionInfo

void setup()
6984  Using Arduino / Project Guidance / Re: Printer plug in device on: October 28, 2012, 04:04:39 am
Unless it is a plain ascii printer the Arduino is too light.

Buy an Raspberry Pi, install UBUNTU on it and configure it as a print server. Google for CUPS.  It includes tooling to adapt printer streams.

Be aware that not all stream can be easily patched. You need a thorough knowledge of the stream (ESC-P, PCL, PostScript, PDF etc)

6985  Using Arduino / Sensors / Re: Displaying problems with DS18B20 on: October 28, 2012, 03:46:49 am
it was to see the soldering points, sometimes strange chars are caused by wires that short(?) every now and then. Although not sharp it looks like the soldering is not the issue here.

4.95 Volt seems high enough,

I still have the feeling it is some hardware failure as there is an image in which the 75 is in the right place but the rest is wrong. That implies that the bytes are send well to the LCD. Do you have another LCD to test if the cause is in the LCD (+wiring) or in the Arduino + temp sensors?
6986  Using Arduino / Sensors / Re: Displaying problems with DS18B20 on: October 27, 2012, 04:59:42 pm
can you post an image of the backside of the panel?
6987  Using Arduino / Project Guidance / Re: Reset button on: October 27, 2012, 04:55:32 pm
Did not meant to be arrogant or to insult you, if so apologies.

We get (too) often people on the forum that do no (serious) search at all, so every now and then I add google tips to help people do better searches.

6988  Community / Products and Services / Re: New - IRTEMP: IR Temperature Sensor Module on: October 27, 2012, 04:17:16 pm
This might be something along the lines of what you were referring to:

GREAT app!
6989  Using Arduino / Sensors / Re: Increasing flex sensor sensitivity on: October 27, 2012, 04:12:52 pm

Can you post your code used?
6990  Using Arduino / Sensors / Re: Analog Reading Problem on: October 27, 2012, 04:09:41 pm

In theory you are right in practice however ...  the 10 bits are +- 1~2 bits (noise, thermal influences etc)
=> Does your Arduino power supply deliver a constant 5.00V? is there noise on the line?

If you want to measure such low voltages you should set AREF to INTERNAL using 1.1V as reference

see - -

Pages: 1 ... 464 465 [466] 467 468 ... 944