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1  Using Arduino / General Electronics / Re: 4 servos one uno chip on: October 03, 2011, 07:35:41 am
Use external source to power up your servos..and connect that source's ground to arduino ground. So now reference voltage level is same!!
you can use 7806 for better performance.
2  Using Arduino / General Electronics / Re: AC 110 to 220 on: October 03, 2011, 07:21:44 am
I think a 1:2 stepup transformer would be easier fr your generator..
3  Using Arduino / Programming Questions / Re: How many times can the arduino be programmed? on: September 14, 2011, 09:22:55 pm
Flash cell Endurance: So it means Completely write and erase entire contents once per day for 27 years, well beyond the life of the hardware.
So dont worry about it.. Its too big number!!
4  Using Arduino / Programming Questions / Re: How many times can the arduino be programmed? on: September 14, 2011, 09:21:15 pm
Write/Erase cycles:   10000/Flash memory    and 100,000/ EEPROM.
5  Using Arduino / Installation & Troubleshooting / Re: Arduino UNO problem - Not Uploading on: September 07, 2011, 12:51:02 pm
Well, when you are in a puddle of mud pondering over what hit you precious Arduino, mostly its because you supply 12V to the arduino pin. So it catch over-current.

Anyway, take your board and check the black circle-marked fuse on it. Now take a solder iron and softly put a drop of solder material on it and you are good to go again. Your board will no further have any on circuit over-current protection. But, it will work as normal.

Other than this, the reason for a burned out board may be the burnt ATmega chip.
6  Using Arduino / Project Guidance / Re: Line Tracker Issues with Turning on: September 03, 2011, 08:57:34 pm
For more information visit: http://www.societyofrobots.com/
7  Using Arduino / Sensors / Re: How To attach Temperature Sensor on: September 02, 2011, 08:51:47 pm
Open this link you ll get your ans:

http://www.arduino.cc/playground/Main/Kty81-110

it shows that connect your sensor's pin1 to GND and another pin2 to 2.7K Ohm resistor. Another terminal of this resistor is connected to Vcc (+5V) supply. Now connect 100nF capacitor parallel to Resistor. So connect a wire to pin2 and Anlaog Port0-A0 pin.
8  Using Arduino / LEDs and Multiplexing / Re: how many volts is needed in one led to turn it on on: September 02, 2011, 07:22:55 am
If you are using Negative Logic then we have to connect pull-up resistor. But when you are working with positive logic then we have to connect pulldown resistor. (To turn it ON in both the case!!) it requires sometimes...not always Lefty. I agree with you.



So here as shown in below image to turn the LED on its depend on Positive/negative Logic.

9  Using Arduino / Sensors / Re: How To attach Temperature Sensor on: September 02, 2011, 07:01:10 am
Hello myRobot guy,

Look this figure and connect it to Analog input pin of UNO.

(Vcc 5+)--+-->2.7k--+-->kty81-222-->(GND)
               |             |
               +->100nF--+-----> ADC0 (Analog Port 0)

I hope you got your answers.
        
10  Using Arduino / Sensors / Re: IR Remote Sensor on: September 02, 2011, 06:43:00 am
yaa....might be, i connected it wrongly. smiley
11  Topics / Education and Teaching / Re: Searching for someone that could talk to us about Arduino on: September 01, 2011, 08:02:29 pm
Hello, private message me if you're interested in webinars!  smiley
or you want any sources regarding to Arduino just send me a message!!
12  Using Arduino / Sensors / Re: IR Remote Sensor on: September 01, 2011, 09:13:34 am
My Circuit is like as shown in the figure. I agree that Due to drew too much current, arduino board disconnected. I think its my good luck that Arduino board is working. isnt it??


Here Output of IR sensor directly goes to the A0 pin of UNO.
13  Development / Suggestions for the Arduino Project / Re: Why 5V? on: September 01, 2011, 01:21:22 am
Because,
A 5V board can drop its outputs to 3.3V if necessary with a simple voltage divider, and can generally recognize 3.3V inputs as "high". but 3.3V cant.
if it drop out to below this level (3.3V) then Digital level becomes LOW !! i.e, 0.
14  Using Arduino / Sensors / IR Remote Sensor on: September 01, 2011, 12:52:18 am
Hello guys...
I was making a Transceiver in which i used a IR LED and IR Sensor, and arduino was connected to Computer. When i just complete the circuit Arduino got disconnected automatically(beep tone in PC)!! Dont know why. and IR Sensor Started heating up!! Why is this done??
15  Using Arduino / LEDs and Multiplexing / Re: how many volts is needed in one led to turn it on on: August 30, 2011, 06:35:34 am
Of course its required series resistor. but when using with micro controller we have to specify Pull-up resistor and pull-down resistor.
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