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11
Arduino Yún / Yun Wifi not working
Last post by kyle7125 - Today at 06:40 pm
I just received a brand new Yun, fresh out of the box.  I plugged it into my PC over USB and waited to see with AP pop up so that I could configure it, but the SSID never showed up.  I've tried resetting the WLAN multiple times, and I've also tried plugging in directly to the PC via Ethernet, but I still can't connect.  I am able to upload sketches and read back over the Serial Monitor.

Here's my output from the WiFiStatus check:
Code: [Select]
Starting bridge...

Current WiFi configuration

Current WiFi configuration

Current WiFi configuration



And here's an output from YunSerialTerminal when I try to find my IP address via ifconfig:

Code: [Select]
root@linino:/# ifconfig
eth1      Link encap:Ethernet  HWaddr B4:21:8A:F8:42:4A  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:251 errors:0 dropped:9 overruns:0 frame:0
          TX packets:27 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:28387 (27.7 KiB)  TX bytes:10611 (10.3 KiB)
          Interrupt:4

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:530 errors:0 dropped:0 overruns:0 frame:0
          TX packets:530 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:36000 (35.1 KiB)  TX bytes:36000 (35.1 KiB)

root@linino:/#


My understanding is that there should be a wlan0 section to this output, but it does not appear.
Any ideas what's going on here?  This didn't happen with any of my other Yun's (I've played with 3 total).

I've also attached the U-boot output in case that's helpful
12
Deutsch / Re: Arduino MEGA, allgemeine F...
Last post by combie - Today at 06:39 pm
Quote
Warum macht es Unterschied wo eine Funktion steht?
Die automatische Funktionsprototypengenerierung versagt manchmal.
Dann ist es angesagt diese händisch zu erstellen.
Alle C/C++ Programmierer müssen diese normalerweise händisch erstellen.


Quote
Wieso meckert die IDE so früh ?
Sie warnt dich, dass der Speicher für den Returnstack und den Heap knapp sein könnte.
Ob er wirklich knapp ist, kann nur der Programmierer beurteilen.

13
Displays / Re: 3 Digit 7 Segment problem
Last post by odometer - Today at 06:38 pm
Please post your code.
14
Programming Questions / ISR(TWI_vect) error compiling
Last post by Plecto - Today at 06:38 pm
Simply trying to have the TWI interface cause interrupts, but my compiles is not too happy about me using ISR(TWI_vect). My knowledge is far too limited to understand why that is :(

Error message:

Quote
Arduino: 1.6.12 (Windows 10), Board: "Arduino/Genuino Uno"
 
libraries\Wire\utility\twi.c.o (symbol from plugin): In function `twi_readFrom':
 
(.text+0x0): multiple definition of `__vector_24'
 
sketch\test5.ino.cpp.o (symbol from plugin):(.text+0x0): first defined here
 
collect2.exe: error: ld returned 1 exit status
 
exit status 1
Error compiling for board Arduino/Genuino Uno.
 
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
15
MKR1000 / Re: MKR1000 blink with externa...
Last post by RandallCole - Today at 06:38 pm
I tested this configuration and code and it work.  This is going to help me with my post.

Thanks.



Hello , sandeepmistry, this is my wiring:



And the sketch that I'm using which I tested with a Yun Board is the following (I have tried different pin combinations already):

const int buttonPin = 7;     // the number of the pushbutton pin
const int ledPin =  6;      // the number of the LED pin

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
 // initialize the LED pin as an output:
 pinMode(ledPin, OUTPUT);
 // initialize the pushbutton pin as an input:
 pinMode(buttonPin, INPUT);
}

void loop() {
 // read the state of the pushbutton value:
 buttonState = digitalRead(buttonPin);

 // check if the pushbutton is pressed.
 // if it is, the buttonState is HIGH:
 if (buttonState == HIGH) {
   // turn LED on:
   digitalWrite(ledPin, HIGH);
 } else {
   // turn LED off:
   digitalWrite(ledPin, LOW);
 }
}
16
Proyectos / Re: Dudas con el monitor serie
Last post by Lucario448 - Today at 06:37 pm
No.
Ya te dije que la comunicación serial es bidireccional. El monitor serie es capaz de enviar texto mientras recibe otro.

Que el Arduino pueda lidiar con ambas cosas a la vez, eso depende del programa.
17
I've tried another one of these boards. The whole thing seems interesting.

When I select "upload using programmer" I get the same response from avrdude - the one about wrong device signature. But the sketch seems to be uploaded correctly anyways. I don't know how this is possible or what is going on anymore.
18
Hardware / Re: Simulare pressione tasto
Last post by elpapais - Today at 06:35 pm


bhe se il diodo è invertito allora si ma cosi com'e' il diodo mi sa che raspi è in uscita e ardu è in ingresso...
dubito che abbiano cambiato i simboli del diodo negli ultimi giorni....
quel diodo impedisce al segnale di arduino di entrare sul raspy...

se sbaglio spiegatemi il perchè....
19
Project Guidance / Re: Best way to make the rece...
Last post by 123Splat - Today at 06:35 pm
Predetermined path through the store for the cart/trolley/bot to follow, marked with I.R. paint. bot uses I.R. illumination and sensors to follow path ( or substitute magnetic rubber strip and Hall Effect sensors, but there goes your budget)(see line following robot projects).  use ultra-sonic distance sensors for obstacle avoidance, and distance from shopper detection ( stop when obstacle within set range, like 2-3 meters). and near field RFID to identify shopper within range.

Gonna cost ya a little more than $50, even before you consider motor drive and power supply to support shopping cart sized max load......
20
Displays / Re: MCUFRIEND_kbv Library for ...
Last post by safari1 - Today at 06:35 pm
David, thank you very much for your patience!
Without your support we would be left alone with an "unknown manufacturer".

Please don't forget to correct LCD_ID_readreg (still reports ID=0 for ST7796).
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