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1801  Using Arduino / Programming Questions / Re: Serial.available() returning unexpected value, Uno R3 on: April 11, 2013, 11:22:56 am
The serial buffer is filled within an interrupt service routine, so it is possible (and with baud rates high enough, probable) that although Serial.available() returns only 1 byte in the buffer, it will have more available if you do send some 20 bytes or more over the same serial interface in the meantime.
1802  Using Arduino / Project Guidance / Re: Temperature display powered for ever !!! on: April 11, 2013, 09:37:49 am
Take a look at the Seeduino Stalker (, there you have almost everything you need on one board, including the battery charger and automatic switching logic, as well as a RTC that is capable of waking up the ATmega at any time, so your sleep states may be more than the 8s the watchdog provides.
1803  Using Arduino / Project Guidance / Re: GPS module and Ethernet ENC28J60 on Atmega328 on: April 11, 2013, 09:33:26 am
I connect ENC28J60 to 10,11,12,13 pins of atmega.

These are the pins for an Arduino UNO and not for an ATmega328. On the ATmega328 it's pins 16 to 19 (PDIP package).

When I try to connect GPS to 10 pin, GPS works and data is collected, but ethernet stops working.

Pin 10 (Arduino numbering, pin 16 of the ATmega328) must be configured as output while using SPI (the Ethernet module needs SPI).

Then I try to connect GPS to 9 pin, but cannot take data from RX pin of GPS.

Post the code you're using!
1804  International / Deutsch / Re: Arduino IDE und externer Editor on: April 11, 2013, 07:45:28 am
Ich verwende einen externen Editor (geany). Die Einstellung "externer Editor" dunkelt den Hintergrund ab, weil der interne Editor abgeschaltet wird. Bei jedem Klick auf den Compilier- bzw. Upload-Knopf wird dann nicht der Inhalt des eigenen Editors genommen sondern die neuste Version von der Platte gelesen. Die Dateien im externen Editor musst Du aber selbst öffnen, das wird Dir nicht abgenommen. Ich benutze die IDE also in erster Linie als komfortabler Uploader, der darin enthaltene Editor sagt mir auch nicht speziell zu.
1805  Using Arduino / Networking, Protocols, and Devices / Re: uploading sketch using ethernet on mega and ethernet shield on: April 11, 2013, 06:55:57 am
Did I get your approach correctly? You want to program a TFTP bootloader to an Arduino Mega2560 by taking an Arduino UNO with an ISP sketch applied?

In this case you haven't wired it correctly. The UNO must have the possibility to reset the Mega2560, so the Mega's reset pin has to be connected to a GPIO pin on the UNO (example with two UNOs:
1806  Using Arduino / Networking, Protocols, and Devices / Re: XBee interferes with USB serial on: April 10, 2013, 11:41:40 am
Can you post pictures of the two Arduinos? Maybe we can see something on them.

The behavior of the second unit is the behavior I would expect from an original Arduino UNO Rev3.
1807  Using Arduino / Networking, Protocols, and Devices / Re: uploading sketch using ethernet on mega and ethernet shield on: April 10, 2013, 11:37:52 am
Post a picture of your cabling and post the modified bootloader code.
1808  Using Arduino / Networking, Protocols, and Devices / Re: different serial baud rates for rx and tx on: April 10, 2013, 11:36:05 am
If you take an Arduino Micro you get the same processor as used in the Leonardo which means that you have a Serial object to talk to the PC by USB and you have a Serial1 object which represents the hardware serial on pins 0 and 1. On the Serial object you can set any baud rate because it's not relevant, the communication is as fast as the USB part of the processor can handle it.
1809  Using Arduino / Networking, Protocols, and Devices / Re: XBee interferes with USB serial on: April 10, 2013, 11:31:21 am
You probably should describe again, which constellation worked and which didn't. I got that differently, I didn't realize that you didn't disconnect the XBee from the first Arduino.

Which type of Arduino did you use for these tests (UNO, Duemillanove, etc.)? What kind of shield did you use to connect the XBee to the Arduino?
1810  Using Arduino / Project Guidance / Re: Help required in a project on: April 10, 2013, 11:21:54 am
Take RGB LED strips with a chip like the WS2801 for every LED. This way you can control an almost arbitrarily long strip with just 4 wires (ground, Vcc, clock and data).
1811  Using Arduino / Project Guidance / Re: [Help] biometric module and arduino on: April 10, 2013, 11:19:15 am
So I ask more general: What's the planed purpose of the Arduino in your project?

You have a fingerprint sensor and a software on the PC controlling it. If you use a 3V3 capable USB2Serial (p.e. you should have everything you need. That's why I'm asking what the Arduino should be for.
1812  International / Deutsch / Re: Mouse.move macht Probleme oder habe ich einen Denkfehler ? on: April 10, 2013, 11:12:58 am

Die Argumente von Mouse.move() sind vom Typ signed char, können also nur Werte von -128 bis 127 aufnehmen. Deshalb schlägt sth77 den Dreifach-Call vor.

1813  International / Deutsch / Re: WAN Adresse des Routers mit Arduino auslesbar? on: April 10, 2013, 10:58:47 am
Der Service wird sicher helfen.

Dein Browser mag per IPv6 auf den Server zugreifen, Dein Arduino mit Bestimmtheit nicht (er kann das gar nicht). Du kannst also diesen Aufruf getrost verwenden, allerdings ist die DynDNS-Lösung mit Sicherheit einfacher zu realisieren.
1814  Using Arduino / Project Guidance / Re: [Help] biometric module and arduino on: April 10, 2013, 10:42:50 am
What's the planed purpose of the Duemillanove in your project?
1815  Using Arduino / Project Guidance / Re: Help with Ethernet shield world wide IP on: April 10, 2013, 10:32:08 am
There are ton of threads at this forum talking about some kind of opensource/linux  base Arduino TCP/IP shield.

OpenWRT is not an Arduino TCP/IP shield but an operating system for a WiFi access point/router.
Raspberry Pi is complete ARM-PC with a Linux operating system and also not an Arduino shield.

build in at above shield,  one command to turn, one to turn off.

None of that list is an Arduino shield.

I do those thing all the time however only for test purpose, and not for Arduino, for some thing else. I am not supposed to do that. but I have root password. Ok you tell me what else make it available on the Internet?

I just told that putting it into a DM zone is not sufficient to make it available on the public Internet.

4. Arduino isn't able to do SSH let alone SSH tunneling.
either build in or one command to install, need modify config file since we need Reverse SSH Tunneling not standard SSH Tunneling.

5. Arduino isn't able to do VPN
one command to install, one on, one off.

I get the impresion, you have absolutely no clue about what an Arduino is. An embedded Linux box is not an Arduino!
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