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1  Using Arduino / Project Guidance / Re: Can 2 RFID card reader using i2c interface be connected to one Arduino on: January 24, 2014, 10:03:02 pm
So what Im thinking right one is to make use of 1 Master Uno and 2 Slave AtTiny. Each AtTiny would have their own RFID reader that is connected Serially. So Since each AtTiny could have different address i could coomunicated to the RFID via I2c. I think thats the idea so far.

@EternityForesst:
How would you sugggest how to fake the interface???? Circuit wise??
2  Using Arduino / Project Guidance / Can 2 RFID card reader using i2c interface be connected to one Arduino on: January 24, 2014, 09:45:44 pm
Hay guys need some help with my latest project. I wont go much into detail but my main question is can i use 2 RFID reader connected via I2c to An Uno simultaniously. The idea is that its almost like the Movie , in a submarine there need to have 2 officer turbin the key simultaniously to activate missile. I warna do that but only itu RFID card. Is it posible???

Currently Im looking at this product

www.lelong.com.my/nfc-rfid-pn532-i2c-module-arduino-project-ebazaar-I1360448C-2007-01-Sale-I.htm
However this product have very limited descrition  as far as i can say that this product dont have selectable I2c id..

If this is not an option for my project can i make use of 2 AtTiny to be slave that fuction as a serial reader RFID interface and would transmite back to the Master as I2c?? Any help would be greatfull and hope you guys would/could suggest any other idea to make my project a reality.. Tuhanku in advance for any help you guys can give...
3  Using Arduino / Project Guidance / Re: Help w/ Arduino Prototyping to Production on: December 16, 2013, 09:57:39 am
I found out that using other atmel chip such as ATtiny 2313 is really good subtitute for an Arduino.. i have build a stepper driver with one of this chip and it work well.. anyway heres some point for you to think about first. You may start with what you have as a prove of concept but at some point you need to test the real thing.. this is cause. Though your program may work well with your test setup but with the real thing? Well you will not know until you try. Second remember that later when you make this product you need ample power for both your arduino n your motor. It would be wise to make sure that the arduino get proper sheilding and so that noice generated by the motor does not get to the arduino... I tosted one cause inproper sheilding or noise get to it. To this day i dont know
4  Using Arduino / Programming Questions / Re: Simulating a PLC ladder diagram on arduino on: December 12, 2013, 10:19:16 pm
Hi uncle I know this is a late reply.. but since i first made this post i had made an effort to learn C++ as a whole and my understanding of programming have increase.. I must say that yes Ladder Diagram help in code.. hack i still draw my laddder diagram b4 i begin to code in C++. but its not that efficient in term of programming..
5  Using Arduino / Programming Questions / Re: Automatic generate source code on: December 12, 2013, 10:09:10 pm
Im not trying to say you can get away from learning programming but i have seen people program an Arduino with labView and Simulink in Matlab.. as far as i know of... i haven't seen anything open source yet... and those are also consider as programming language too but only in term that they use graphical block to code
6  Using Arduino / Project Guidance / Re: How to replace 5k potentiometers with two push buttons?? on: July 09, 2013, 12:08:57 pm
Code:
if Switch1 press value++;
 if switch2 press value--;
thats all to it...
7  Using Arduino / Project Guidance / Re: Hacking Car reverese parking sensors! on: July 05, 2013, 01:35:50 pm
sorry wrong link heres the one i was talking about http://ph-elec.com/archives/ultrasonic-sensor-hacking-step-1/ and http://ishankarve.blogspot.com/2011/06/decoding-ultrasonic-parking-sensor.html
8  Using Arduino / Project Guidance / Re: Hacking Car reverese parking sensors! on: July 05, 2013, 01:22:01 pm
i dont know if this what you ask or something but when you say about car sensor, i imidiately struck ny this article i read a while ago... heres a link
http://www.instructables.com/id/Arduino-reverse-obstacle-sensor-for-cars/
9  Using Arduino / Project Guidance / Re: Project qurrey on: March 04, 2013, 10:49:52 am
http://www.sparkfun.com/tutorials/269
10  Using Arduino / Project Guidance / Re: Need help with limit switch and steppermotor on: March 04, 2013, 10:26:12 am
well 3nsio, its ok if you post a newbie code on here, we are here to help you .To help you learn and together we grow and expand our knowledge. Anyway heres some pointer for you to look at
  • Finite State Machine
  • maybe A do while loop would be great too
11  Using Arduino / Project Guidance / Re: Project qurrey on: March 04, 2013, 06:36:00 am
well did you ever go to the dentist and they have a cup that will be fill, and as the cup get filled, it will automatically turn off the tap? i think that if you use the same idea but instead of using just a normal switch use a force resistor under the cup. it might not be accurate enough but maybe it might work for your application.
12  Using Arduino / Project Guidance / Re: Sketch too long - need help with the project on: March 04, 2013, 06:29:24 am
i think whats the op is asking, is there any library that could manage all the library that he is currently using so that he could shrink the size of his code
13  Using Arduino / Project Guidance / Re: Need help with limit switch and steppermotor on: March 04, 2013, 06:27:01 am
could you show us your code so that we can help you more
14  Using Arduino / Project Guidance / Re: Two analog sensors controlling PWM on: March 03, 2013, 11:53:56 am
well then if thats the case i stand corrected AWOL, i learn new thing each and every single day here at the forum. Awol Thank you
15  Using Arduino / Project Guidance / Re: Two analog sensors controlling PWM on: March 03, 2013, 11:47:37 am
@ash901226
Quote
You should know that this part wont work,
Why ever not?
Awol as i wrote in reply #2
Quote
You should know that this part wont work, well it will but not the way you want it to be

from my understanding, the op wanted to use Analog pin, However from my limited knowledge of arduino, when someone wish to use the Analog pin, he/she have to write an A before the digit so that the arduino compiler know that the programmer requested to the Analog pin. I do how ever know that analog pin can also be call bit its pin number like for instant A0-A5 can be called as pin 14-19
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