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1  Using Arduino / Project Guidance / Re: bluetooth bee + xbee shield v1.1 + 16*2 lcd screen on: October 27, 2013, 04:40:37 pm
This is how you connect the LCD to your arduino:
http://playground.arduino.cc/uploads/ScematicLcd/scematic_lcd.pdf
Then use the LiquidCrystal library to display data on the LCD:
http://www.arduino.cc/en/Reference/LiquidCrystal
Next add functionality (using Serial port) to communicate to your PC, find an example here:
http://timewitharduino.blogspot.ca/2012/04/wise-clock-4-with-bluetooth.html
2  Using Arduino / Project Guidance / Re: Robot drawing on wall on: October 10, 2013, 05:50:32 pm
Or this one:
http://www.instructables.com/id/Polargraph-Drawing-Machine/
3  Using Arduino / Project Guidance / Re: Basketball Skycam High School Engineering Project on: October 10, 2013, 01:53:21 am
According the specs, Yun has WiFi. That would be
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the easiest way to communicate wirelessly
.
4  Using Arduino / Project Guidance / Re: timer / alarm / clock with arduino on: October 09, 2013, 10:01:11 pm
You will find all the required features here:
http://timewitharduino.blogspot.ca/
5  Using Arduino / Microcontrollers / Re: Convert Trinket to Digispark on: October 09, 2013, 08:43:08 pm
Thanks Ray.
This would make a good post on your blog.
BTW, the instructables link is broken.
6  Using Arduino / Microcontrollers / Re: Using an ATMEGA48V ? on: October 09, 2013, 08:40:20 pm
You may be able to use it by selecting "Arduino NG or older with ATmega168" as the board.
Keep in mind that the program memory is only 4K, out of which 2K is taken by the bootloader.
(Compare that with ATmega328's 32K of program memory.)
7  Using Arduino / Project Guidance / Re: Best Arduino wireless communication solution - 350Mhz / 433Mhz / 950Mhz / 2.4Ghz on: October 09, 2013, 08:26:25 pm
Take a look at the RFM12 as well:
https://www.sparkfun.com/products/9582

The range also depends on the Tx power, that is, one transmitter that takes 11.3mA (nRF24L01) has usually a smaller range than one that takes 300mA (XBee Pro).
8  Using Arduino / Project Guidance / Re: Using one MCU to provide power to another on: October 07, 2013, 09:52:35 pm
The max current you can source from an output pin of 328 is 40mA.
Even if it's not a good practice, it works. (I think I've even seen it used on one of the shields, was it XBee?)
9  Using Arduino / Project Guidance / Re: Beginner question on: October 07, 2013, 09:44:18 pm
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I haven't done the following, but I am very interested in the shield-less method:
http://maxoffsky.com/maxoffsky-blog/how-to-play-wav-audio-files-with-arduino-uno-and-microsd-card/
I tried it and it works quite well.
http://timewitharduino.blogspot.ca/2013/05/play-wav-files-from-sd-card-with-wise.html
10  Using Arduino / Project Guidance / Re: Two arduinos to talk GSM on: October 07, 2013, 08:40:12 pm
Try to send SMS from GSM shield to a regular (SMS) phone and viceversa. This test may solve 50% of your problems.
11  Using Arduino / Project Guidance / Re: GSM on: October 07, 2013, 08:08:30 pm
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Can anyone tell me how to do or suggest me some examples?
You were so close....
http://arduino.cc/en/Reference/GSM
12  Using Arduino / Project Guidance / Re: Robotic Arm From an iPhone Box on: October 06, 2013, 08:42:37 am
Sounds interesting. Please post a picture.
13  Using Arduino / Project Guidance / Re: help me in the programming! on: October 06, 2013, 08:40:47 am
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can you help me to make the circuit
Your circuit will basically include an LCD, a button and a temp sensor on top of Arduino.
Google for "connect LCD to Arduino",  "connect temperature sensor to Arduino".
You will certainly find hundreds of examples and source code.
Then adapt the code to your particular circuit (pin-wise) and project specs.
14  Using Arduino / Networking, Protocols, and Devices / Re: Info about transceivers on: October 06, 2013, 08:23:51 am
Two transceivers means 2 receivers and 2 transmitters. These are usually used for communication, not for managing PWM signals.
What protocols/frequencies are you thinking?
15  Using Arduino / Networking, Protocols, and Devices / Re: Database Arduino and Android on: October 06, 2013, 08:20:44 am
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I'd like to send the data of the humidity, temperature and the intensity of light to my android . The app of android have to receive these data via ethernet and interpret them and then show me these data on the screen.

There is a site xively.com (formerly known as cosm.com) that can receive your data periodically. Then you can access that data through any browser (or even Android app) as graphs, numbers etc.
Basically, for your project you need to wire an Wifi/Ethernet  module to your Arduino and send the data collected from the sensors to xively.com.
I have an example here:
http://timewitharduino.blogspot.ca/2012/09/post-data-to-cosmcom-with-wiseclock4.html
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