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Results tagged with arduino
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user 3130
Be sure to use the Arduino Stack Exchange for questions that are more Arduino and less electronics.
3
votes
2
answers
4k
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Arduino board Power Polarity
I don't know if the power plug should have + at the inner contact or the outer.
- 1,022
2
votes
Arduino board Power Polarity
A good documentation on the official Arduino Wiki: arduino.cc/playground/Learning/WhatAdapter
+ is the center contact
- is the outer contact
.---. …
- 1,022
1
vote
3
answers
2k
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Is there another Arduino ethernet module besides the "Arduino Ethernet Shield"?
On the official Arduino website only the Arduino Ethernet Shield is referenced for Ethernet programming. Are there any other modules for Ethernet on the Arduino? …
- 1,022
7
votes
2
answers
645
views
Are there different Ethernet shields available?
Beside the w5100 chip powered Ethernet shield, are there shields available with other chips?
The w5100 seems to make a lot up problems. There are many Ethernet related problems documented on several …
- 1,022
3
votes
2
answers
4k
views
Which Microcontroller can I use on a Arduino board?
I own a Arduino UNO with the ATmega328 Microcontroller.
Which other Microcontrollers are compatible to the Arduino system? …
- 1,022
1
vote
3
answers
5k
views
How to import a library into a Arduino program?
I have a Arduino program wich make use of the processing library. … And the other part of the code works fine with the Arduino IDE :) …
- 1,022
0
votes
1
answer
26
views
What library version is bundled with which version of the Arduino IDE?
There are several libraries bundled together with the Arduino IDE. I wonder if there is a list which shows exactly which library (and bugfixes, code changes) where bundled with which Arduino IDE. …
- 1,022
0
votes
1
answer
1k
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Arduino + Microphone how to grab values?
I have a simple microphone. How can I send some "volume" or "oscillation" values via serial to the computer?
I built a simple preamp but it does not respond, any hints?
- 1,022
11
votes
3
answers
16k
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How to discover memory overflow errors in the Arduino C code?
Because there was no compile error or warning in the Arduino IDE I thought the Arduino was broken but after some tests I found out that not all kinds of errors are caught by the Arduino IDE compiler - … This seems to crash the Arduino in a short amount of time.
How can I discover errors not displayed by the Arduino IDE? …
- 1,022
7
votes
3
answers
3k
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Ethernet.begin() only works with SD Card removed - why?
When I run this code on my W5100 Ethernet Shield:
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
void setup() {
Ethernet.begin(mac);
}
it only works when the SD Card was removed from the …
- 1,022
6
votes
2
answers
366
views
Check the quality of not original Arduino boards?
There are several reproduction Arduino boards available. How can I check that the board is wired correctly and that the ATmega chip and the other parts are comparable to the official design? …
- 1,022
9
votes
2
answers
832
views
Reduce the size of the Arduino bootloader?
Is there any way of reducing the size of the preloaded Arduino bootloader, to save some bytes for the program? …
- 1,022
2
votes
1
answer
4k
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W5100: get MAC address from devices in network? [closed]
I'm using a single Arduino Ethernet Shield with an Wiznet W5100 chip to scan a network for all devices. (Find the project source code on Github).
All devices are in the same Ethernet segment. …
- 1,022
4
votes
2
answers
674
views
Which version is my Ethernet Shield?
It seems that there are different versions of the Arduino Ethernet Shield available. How can I distinguish between the versions? How do I find out which hardware version I have? …
- 1,022
4
votes
3
answers
17k
views
How to avoid SD Card and W1500 SPI mixup on the Ethernet Shield?
In an answer Kevin Mark points to a solution/reason for the usage of the Ethernet shield together with the SD Card. The documentation says that SD Card and the Ethernet chip both share the SPI bus and …
- 1,022