Arduino by Davis: “Arduino uno + Keypad = calculator” plus 19 more

Arduino uno + Keypad = calculator
Re: Serial Read of GPS Every Loop
Using a 4mhz crystal - timining/coding? issues?
Noob question on LEDs and amps draw
Re: Arduino Official Wifi Shield : "Not present"
Re: Il PC non riconosce Arduino
PING)) + SERVO (PROBLEMA)
Dicas para optimizar código, ou... porque é que todos deviamos aprender Assembly
Re: SIM 900: Error 604 Stack Busy
Re: Problema con millis e while
Google Street View Hyperlapse
Re: Probleme beim Uploade auf ATtiny44A
Re: ABC - Arduino Basic Connections
Re: Flex Sensor - some general info
Re: Long Range Narrow Beam Ultrasonic
Re: Explication SIMPLE différences UNO / Leonardo
Re: Il PC non riconosce Arduino
Re: Aumentare raggio d'azione moduli RF 433mhz
Re: Il PC non riconosce Arduino
Sure 3208 problem

Posted: 16 Apr 2013 03:40 AM PDT

Hey.

I need some help on how i shall beging the code for an easy calculator that can do +, - , *, /.
That will show result in serial monitor.

The code I have now:

#include <Keypad.h>

const byte ROWS = 4; //four rows
const byte COLS = 4; //three column...

Re: Serial Read of GPS Every Loop

Posted: 16 Apr 2013 03:40 AM PDT

Quote

"I want to read the full 80 characters, which take nearly forever to arrive, 16,000,000 times per second"

I strongly suspect that what he means is "Read the full 80 characters then display it before repeating the loop() function". In wh...

Using a 4mhz crystal - timining/coding? issues?

Posted: 16 Apr 2013 03:39 AM PDT

I came across someone who wired up a 4mhz crystal to an atmega328p .... because of the fact he was limited to 3v (from a single cell aaa energizer through a step up to deliver3v), he claimed that's the most it would operate at 4mhz, but if this was tru...

Noob question on LEDs and amps draw

Posted: 16 Apr 2013 03:38 AM PDT

Hello all,

and please bear with me, it's pretty basic,

I am wanting to experiment with high-power red-green-blue LEDs and have myself a LZ4-20MC00 (http://dk.mouser.com/Search/ProductDetail.aspx?R=LZ4-20MC00virtualkey62410000virtualkey897-LZ420MC00) fo...

Re: Arduino Official Wifi Shield : "Not present"

Posted: 16 Apr 2013 03:37 AM PDT

Are your UNO's both R2?

Re: Il PC non riconosce Arduino

Posted: 16 Apr 2013 03:00 AM PDT

Mi spiego meglio.
Non sto dicendo che non può richiedere la sostituzione, questa gli spetta di legge essendo il venditore sul suolo europeo.

Mi riferivo al fatto che non può contestare il fatto di aver acquistato una versione contraffatta dell'Arduino ...

PING)) + SERVO (PROBLEMA)

Posted: 16 Apr 2013 02:58 AM PDT

Hola a todos!

Estoy realizando un proyecto de medidas de distancia con el sensor de ultrasonidos PING))), pero tengo un problema.

Aquí el codigo y luego la explicación:

//Variables
int incomingByte;

const int SERVOMOTOR = 9;
const int pingPin = 22;

int...

Dicas para optimizar código, ou... porque é que todos deviamos aprender Assembly

Posted: 16 Apr 2013 02:58 AM PDT

Viva,

Enquanto estava aqui a pesquisar os bichinhos da Atmel, dei com uma application note que é interessante para quem escreve código no Arduino ou para quem vem do mundo da programacão em computadores/telemóveis possa entender a maneira de pensar de...

Re: SIM 900: Error 604 Stack Busy

Posted: 16 Apr 2013 02:55 AM PDT

Quote

Which module are you using?

I'm using a GPRS Shield v1.4 by Seed Studio (like this but v1.4 http://www.seeedstudio.com/wiki/GPRS_Shield_V1.0)

Quote

Why should the watchdog feature not work on a Mega2560?

watchdog feature not wo...

Re: Problema con millis e while

Posted: 16 Apr 2013 02:55 AM PDT

Salvi il tempo in una variabile, ad esempio

Code:

unsigned long timestart = millis();

poi il while lo strutturi come

Code:

while (millis()-timestart < 50000)
{
......

Google Street View Hyperlapse

Posted: 16 Apr 2013 03:00 AM PDT

Neat hyperlapse videography tool using Google Street View by Teehan + Lax via Colossal

Re: Probleme beim Uploade auf ATtiny44A

Posted: 16 Apr 2013 02:32 AM PDT

Und welche Signatur liest avrdude tatsächlich?

(00 00 00 deutet auf einen generellen Fehler hin.)

Schalte in den Einstellungen "Ausführliche Anzeigen während ... |X| Upload" ein.

Re: ABC - Arduino Basic Connections

Posted: 16 Apr 2013 02:32 AM PDT

MI avete evocato, eccomi

sto scoppiando, 7 ore di lezione al giorno ucciderebbero anche A. Stakanov

Essendo l'ultimo, in ordine cronologico, ad aver lavorato con l'accrocchio, posso riassumere la situazione:

1 - la V-USB è realizza...

Re: Flex Sensor - some general info

Posted: 16 Apr 2013 02:19 AM PDT

Hi. How much is the resistivity of the sensor in flat position? If you could still remember.

Thanks

Re: Long Range Narrow Beam Ultrasonic

Posted: 16 Apr 2013 02:19 AM PDT

Grumpy_Mike - Thanks for the reply but I would need some convincing. As I see it the thing is that a radio wave is polarised and so a Yagi only needs to work in the direction of the polarisation but the ultrasonic is not polarised and so needs to be 2 ...