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1  General Category / General Discussion / Jitters on Android phone with Mega ADK on: September 02, 2013, 01:19:55 am
Hi,
I just connected the Arduino Mega ADK with my Android phone. My phone (Samsung Galaxy Nexus(4.1)) is getting charged - but with jitters (every second).
For the same reason, when I install the Android app on my phone with the code to just detect an accessory attached, it detects the accessory, but unable to launch my app. I tried sending the data serially from Arduino, and could see that process to be smooth (on Arduino end). I first thought this might be because of high baud rates, but decreasing baud didn't help.

I remember this to be working fine for the first 2-3 times.

I am using my laptop as a power source for Arduino, which is a power source for Android. Is this the cause of problem ? Should I get an external power supply for Arduino ?

Thanks !
2  General Category / General Discussion / Beginning Android ADK on: December 28, 2012, 01:00:41 am
I am an Android developer and pretty much noob to both Arduino and electronics. I am learning Arduino so as to start with Android ADK. I have got hold of the basic concepts and am planning to start with Android ADK, as it is based on Arduino. Would request the community's help  to find a place to buy ADK - I understand that Google devices are not available, but I am confused on what similar products I may buy to use the APIs for Android. I like all the hardware features listed here :
  • An ARM 32-bit Cortex M3 micro-processor
  • Separate USB connections for an Android device and computer connection for programming and debugging
  • Sensors for light, color, proximity, temperature, humidity, barometric pressure, and acceleration
  • Micro SD Card slot
  • Bluetooth support

I can see a few people recommending IOIO, is it worth a try ?
If my location matters, I am in Sydney.

Thanks !!
3  General Category / General Discussion / What components to get apart from Arduino ? on: December 28, 2012, 12:44:29 am
I am a noob to both Arduino and electronics. I got a UNO-R3, and have been playing with the sample projects - but as I got addicted, I feel my UNO board is not enough... there are examples to control ethernet, sound, motors and multiple things I am new to.
My request is for some suggestion as to what new things am I supposed to add to my kit - for now I have just some wires, LEDs, resistors and capacitors. These are what I can think of :
1. Potentiometer
2. Speakers
3. Light Sensors
4. Servo Motors
But I am not sure should I buy all of them.. or any particular configuration I should look for.. or I need some other important stuff ! Would like to know what the community did after getting the basics of Arduino.

Thanks in anticipation !
4  Using Arduino / General Electronics / What is the role of INPUT mode on Arduino ? on: July 28, 2012, 08:35:38 am
Hi,
I am newbie to both Arduino and Electronics. I always thought when we are saying INPUT and OUTPUT, we assume it's INPUTof power, or OUTPUT of power.
The ledPin set to OUTPUT is hence acceptable to me. Now, power input is being given  by the "POWER" pins (5V, 3.3V, etc.) - why do we specify another pin as an INPUT ? I can't understand the flow here. The source of my doubt is here :

What is the role of pin 8 ?

Thanks !
5  International / India / Re: Where to start ? on: July 20, 2012, 04:23:42 pm
Thanks Karthik ! The video (series) is a great help smiley
I have ordered the starter kit (Uno) from here : http://store.explorelabs.com/index.php?main_page=product_info&cPath=3&products_id=50

I am still afraid of burning things up... any precautions you would suggest ?

Thanks !
6  International / India / Where to start ? on: July 18, 2012, 01:15:59 pm
Hello all !
Good to see an Indian community here smiley I am from Hyderabad. I googled for a few guides on starting up, but none easy enough for me ! Recently I passed my engineering with Computer-Science background, with an unknown fear of electornics smiley-razz

Got to come across Arduino, while working on http://mqtt.org/ ; and find the applications exciting. I am good with the programming part, but can't guess :
1. What hardware to buy ? What is the minimal kit I should start with ? If possible, please suggest where to buy too... reading all about the types of boards is deviating my efforts.
2. I tried 2 simulators for checking the basic "LED blinking" examples - but none got working. Should I spend more time on simulator, or I should move to hardware ?
3. Is there a chance that I blow up the Arduinos while learning ? (I need to prepare myself financially for this)

In summary, I want to have a quick start with Arduino, with results to keep me motivated.

Thanks !
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