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46  Using Arduino / General Electronics / Re: What kind of connector is here? on: January 11, 2014, 01:19:26 am
This call the SlimStack Plug connector
47  Using Arduino / Project Guidance / Re: Controlling the Arduino with an Android over Bluetooth? on: January 11, 2014, 12:23:16 am
You can use this tool to check on what Arduino send.
http://blog.iteadstudio.com/make-arduino-talk-with-android-by-bluetooth/
48  Using Arduino / Project Guidance / Re: Using Arduino to create a hardware RAM drive on: January 10, 2014, 07:40:02 pm
Paul-- In researching this project, I came across some really high end data diodes.  If one-way data transfer using a serial connection is so effective (not to mention low cost), what are high end data diode companies really offering with one-way transfer diodes that cost thousands of dollars a piece? 
The key is component reliability,  Trustability and communication reliability.


http://www.synergistscada.com/building-your-own-data-diode-with-open-source-solutions/
http://cybermatters.info/2013/02/07/diy-data-diode-for-1612/?relatedposts_exclude=1006
http://en.wikipedia.org/wiki/Unidirectional_network
49  Using Arduino / Project Guidance / Re: Distributing current evenly between two parallel programmes on: January 10, 2014, 06:46:49 pm
You say you have connect first LED to pin 9, but in your program you have define pin 13,

your second LED on pin 8, you have not define pin 8 as output.
Quote
const int ledPin =  13;   
const int led = 8;

void setup() {
  pinMode(ledPin, OUTPUT);
  }


50  Using Arduino / Project Guidance / Re: sync arduino rtc with system clock on: January 07, 2014, 09:50:15 am
What OS your laptop used?

You can try to sends these messages T1389106357 using the serial monitor or you can look up for current time

If you use Linux, try this shell command:
Quote
TZ_adjust=-8;  echo T$(($(date +%s)+60*60*$TZ_adjust)) > /dev/tty.usbserial-A8008pym

or

TZ_adjust=5.5;d=$(date +%s);t=$(echo "60*60*$TZ_adjust/1" | bc);echo T$(echo $d+$t | bc ) > /dev/ttyACM0

If you using Mac, try this command
Quote
To set the variable to EST
TZ_adjust=-5;

sudo echo "T$(($(date +%s)+60*60*$TZ_adjust))" >/dev/tty.usbmodemfa131
51  Using Arduino / Project Guidance / Re: Help a newbie make an e-reader on: January 07, 2014, 06:33:07 am
May I ask, what is the difference between the four interface options? Are there advantages/disadvantages to each in certain circumstances?
The advantages for parallel 8 bits or 4 bits mode will be it load faster to display but disadvantages is you need more I/O pins.
For serial and I2C mode will used less I/O pins but disadvantages in speed.
It is all your choice.
52  Using Arduino / Project Guidance / Re: sync arduino rtc with system clock on: January 07, 2014, 06:14:33 am
The DateTime library is out dated, has been superseded by a newer version that is available here.
53  Using Arduino / Project Guidance / Re: Help a newbie make an e-reader on: January 04, 2014, 01:06:17 am
The LCD on-board using SSD1803 controller is 90% compatible with the widely-used HD44780 controller.
and it can use 4-/8-BIT, SPI (4-WIRE) AND I²C (2-WIRE) interface

The display is powered from a single 3.3 V input.

A 150 mA constant current source is needed for the LED back lighting

you can try the code from these web site

http://mbed.org/cookbook/Text-LCD-Enhanced

https://bitbucket.org/fmalpartida/new-liquidcrystal/wiki/Home
54  Using Arduino / Project Guidance / Re: Counter for measuring distances (newbee) on: December 29, 2013, 09:36:47 am
What you doing more like the arduino bicycle computer
http://lmgtfy.com/?q=arduino+bicycle+computer
55  Using Arduino / General Electronics / Re: Battery Powering Arduino Pro Mini 5v on: December 29, 2013, 03:59:38 am
Only +5V should connected to Vcc pins, if you have higher then 5V, than you have to connect to Raw input pin.

When you say "arduino will not work" but what is not working? have you upload a Sketches? may be you can try the Blink example sketche.
56  Using Arduino / General Electronics / Re: What is in my board and what can it do? on: December 28, 2013, 07:45:06 am


LDR Light sensor


IR remote Receive


vibration sensor
This Vibration Sensor use the SW-18015P from MEC to measure the vibration.It can triggered from any angle, and often used for flex, touch, vibration and shock measurements.




IR photo transistor sensor


temperature sensor


Buzzer


Ball Bearing Tilt Sensor


NPN SS8050 & PNP SS8550 Transistor
http://www.fairchildsemi.com/ds/SS/SS8050.pdf
http://www.fairchildsemi.com/ds/SS/SS8550.pdf


3 digits 7 segment display
57  Using Arduino / General Electronics / Re: What is in my board and what can it do? on: December 27, 2013, 05:53:09 pm
Are your kits look like these




58  Using Arduino / General Electronics / Re: Connection Issue on: December 19, 2013, 07:57:14 pm
What is the size of your jumper wires?
You can use CAT 6 plugs which able to fit cable size AWG 23-26.
59  Using Arduino / General Electronics / Re: Battery Powering Arduino Pro Mini 5v on: December 17, 2013, 10:23:35 pm
Yes, one vcc pin and split it and then connect one half to the bread board and one half to the fabrickit Coin Cell Brick arduino.
60  Using Arduino / General Electronics / Re: Battery Powering Arduino Pro Mini 5v on: December 17, 2013, 10:00:42 pm
Both Vcc pins connected together, you can use any one of them. But I suggest keep FTDI Header exclusively for the FTDI.
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