Show Posts
Pages: 1 ... 4 5 [6]
76  Using Arduino / Project Guidance / What i need in order to rotate 60° right and then 60° left (back) ? on: October 19, 2012, 10:08:13 am
Hello , i will have some windows at my project and i will need a solution to open and close them , wich is the cheapest solution ? thanks !

I was thinking a motor which will rotate left-right and the next time it will be triggered it will rotate right-left.
77  Using Arduino / Project Guidance / Re: Serial Enabled 16x2 LCD - How many pins ? on: October 19, 2012, 07:59:50 am
Right. 
It's asynchronous serial:
Quote
Communication with SerLCD requires 5V TTL serial at a default baud rate of 9600bps (8-N-1).


What do you mean "asynchronous serial" ? im very new sorry...

I want it to display text like this "hello my name is 123"
78  Using Arduino / Project Guidance / Serial Enabled 16x2 LCD - How many pins ? on: October 19, 2012, 07:13:29 am
This lcd https://www.sparkfun.com/products/9395 needs only 1 digital pin to be connected to arduino ? Thanks
79  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 19, 2012, 04:11:09 am
Analog pins can be used as digital pins too

O thanks i didn't knew that , im new to arduino , it has 6 analog pins , the 3 pins will be my 3 sensors so i will have another 3 free analog pins to use as digital , do you believe it's a risk to go with so little free pins or i will make it ?

I think arduino mega will be more "safe" in order to be sure i could connect all of them...
80  Using Arduino / Project Guidance / Re: Aquarium Auto Top Off Fail safe on: October 18, 2012, 07:19:19 pm
typography or ...??  floatStatecounter == 0; it should be  floatStatecounter = 0;

also you can try remove this line and do it like this

Code:
if (buttonState == HIGH) { floatStatecounter++; } else { floatStatecounter = 0; }
81  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 06:59:03 pm
Getting a Serial LCD is much easier to work with both from a pin # and wiring perspective.

Thanks for the advice about the lcd , i found that a serial lcd is more expensive and i think the code is complicated comparatively to other lcd http://www.arduino.cc/en/Tutorial/LiquidCrystal ... But it's much easier at wiring you are right !

Anyway , it doesn't make any sense because if i completely remove the 7 digital pins of the LCD (if i was right at my last post) my pins will be 18 - 7 = 11 , but i need an lcd and i have only 3 digital pins left (UNO has 14) , so i have to go with MEGA.... i think...
82  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 04:12:26 pm
Check for alternatives to other interfaces and LIST all the pins they need...

let me try... im very new to arduino...


--LCD needs 7 digitan pins

--Keypad needs 7 digital pins

--2 Fans (no speed control , only on/off , will work together) needs 1 digital pin

--3 input pins (CO2 sensor, temperature, water) needs 3 analog pins , 1 each

--LED , i will have 3 groups , 15 + 15 + 10 , i will light each group separately , needs 3 digital pins , 1 each group

--GSM shield needs....i have no idea...

So to sum up , i need 7+7+1+3+3 = 21 pins... At least...

18 Digital and 3 Analog...

Arduino uno has 14 Digital I/O , so it's not good for me....
Arduino mega 2560 has 54 Digital I/O , so its good for me !

Is this correct ?
83  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 02:58:19 pm
Thanks for GREAT answer !!!

--LCD http://www.futurehouse.gr/index.php?main_page=product_info&products_id=3142

--Keypad http://www.futurehouse.gr/index.php?main_page=product_info&products_id=3715

--2 Fans (no speed control , only on/off) http://www.futurehouse.gr/index.php?main_page=product_info&products_id=4448

--3 input pins (CO2 sensor, temperature, water)

--LED , i will have 3 groups , 15 + 15 + 10 , i will light each group separately

--GSM shield http://www.futurehouse.gr/index.php?main_page=product_info&products_id=4421
84  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 01:37:02 pm
Mega is the next choice. It really depends how much intelligence is in the peripherals.

You might want *two* Unos, one for sensing/controlling and one for displaying/keyboard input.

Or 1 Uno with this ? ??
85  Using Arduino / Project Guidance / Re: Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 01:27:46 pm
SInce each of these could take anywhere from 1 to 40 pins, I don't see how we could answer. But this looks like a lot for an Uno.

if i post links to my products can you tell me if its enough ? which arduino do you recommend ?
86  Using Arduino / Project Guidance / Can i connect all of them to my arduino Uno R3 ? on: October 18, 2012, 01:23:00 pm
Hello , i want to start a new project and i will need:

1x LCD (16x2 - characters and numbers)
1x Keypad (1-9 only)
1X GSM Shield
2x Fan
1x temperature sensor
1x water sensor
1x co2 sensor
40x leds

Are there enough ports on arduino UNO R3 for my project ? Thanks...
Pages: 1 ... 4 5 [6]