Recent Posts

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21
Networking, Protocols, and Devices / Re: SPI scanner
Last post by SurferTim - Today at 03:23 am
scan for available address of the device cause what if the device is only capable of transmitting via SPI only.
There is no "SPI address". The SPI bus uses three common lines.
MOSI = Master Out - Slave In
MISO = Master In - Slave Out
SCLK = Clock

Then it uses a unique line for each device, and the "address" is determined by the slave select (SS) line. That line could be any digital pin. You can't effectively poll every digital pin. That could damage other equipment connected to those digital pins. You know the device "SPI address" of each device because you determine which digital pin the slave select is connected to, or the shield specifies which pins the slave selects are connected to.
 
The I2C bus is different. It uses two pins, and all devices connect to those pins, and each device responds to a specific address on that bus.
22
You didn't really answer my question
("noise" == results of [printed after] OLQ ?)

I thought that, with "floats", a whole number has to have a decimal appended to it.


totalMilliLitres  = 0;
Serial.print(totalMilliLitres/1000);
lcd.print(totalMilliLitres/1000);
vs.
totalMilliLitres  = 0.0;
Serial.print(totalMilliLitres/1000.0);
lcd.print(totalMilliLitres/1000.0);
23
Arduino Esplora / Esplora debug
Last post by yellowcamper - Today at 03:21 am
Here is a helpful tool for the Arduino Esplora that shows info on all basic inputs(NOT the tinkerkit inputs); the info is in the serial monitor at 9600 baud.
24
Project Guidance / Re: Toy Pinball
Last post by GoForSmoke - Today at 03:18 am
These should work with one or more libraries we already have. I've made a 3x4 work that way.

4x4 keypad at Amazon for about $3

The WAV trigger is the $50 one from Sparkfun? It's sweet and complete, even got SD,
but check out the 2 FX Mini boards for price.

25
The 85 has a timer1 that I think works just like the timer1 on the 328.
Not even close.  From what I can tell timer 1 on the t85 is one of a kind.

Timer 1 on the t84 is nearly identical making it a great "step down" into the ATtiny world.

26
Español / Re: Envío de datos desde Ardui...
Last post by resKte - Today at 03:12 am
Muy buen tuto jopapa  :smiley-mr-green: :smiley-mr-green: y sergesgx .... vos podrias subir tu proyecto? asi lo compartis con nosotros o ya lo tenes en los foros?
27
Hello! I am fairly new to Arduino. I have an Arduino Uno, and two continuous rotation servos (GWS S35/STD). I am creating a very simple 6-legged robot, with each motor controlling each side.

I am having issues on "synchronizing" the two motors so that they turn at the exact speed, and if one stalls, I need the other to wait for it.

I really really need help very soon, as I must get this part done by April 2nd.

Thank you very much!
28
Networking, Protocols, and Devices / Re: SPI scanner
Last post by llexer - Today at 03:06 am
Scan for what?

scan for available address of the device cause what if the device is only capable of transmitting via SPI only.
i was just wondering anyways.

Thank you.
29
Español / Re: Re: LCD Display problem
Last post by resKte - Today at 03:04 am
Como dijo Surbyte, nos ayudaria algunos datos, como es tu conexion y la programacion, que aca hay mucha gente que sabe mucho y de seguro te ayudaran. Saludos 8) 8)
30
google / ebay / amazon
bilge pump
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