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1111  Using Arduino / Project Guidance / Re: Help A noob on: March 23, 2012, 03:41:01 am
I would suggest doing the same on the Serial Monitor screen on the Arduino IDE that lets you get information printed that what is working inside the Arduino programme ,see >>arduino.cc/en/Reference/serial with this you only need a Switch and a 10k resistor to connect the switch(push button) with some wires and you have the working thing ready ,now you just need to get further with displaying that info. on a 2 digit 7 seg. display.
1112  Using Arduino / Project Guidance / Re: Best way to detect skee-ball hole on: March 23, 2012, 03:36:20 am
What if a Grasshopper Drops in! or some kind of other element in the external environment, bingo ball is in! , i will suggest double checking the result, Im thinking how it may happen.
1113  Using Arduino / Project Guidance / Re: Arduino Uno + Bluetooth Connectivity Issue on: March 23, 2012, 03:23:16 am
Code:
if( value == 'H' )               // if 'H' was received
  {
    digitalWrite(ledpin, LOW);     // turn ON the LED
  } else {

You are doing the pin LOW where you want to turn the LED on that's why!
1114  Using Arduino / Project Guidance / Re: Fading LCD backlight via PWM pin on: March 22, 2012, 12:20:57 pm
Well you have the very right transistor , utilise it just like you would run a relay ,I have written other things already, in the above post.   smiley-kiss
1115  Using Arduino / Project Guidance / Re: Fading LCD backlight via PWM pin on: March 22, 2012, 11:42:46 am
You can in such a case use a transistor with its base connected to the pwm pin with a 220min resistor, just like you drive a high power motor or relay,take care of the base current needed to turn the transistor on as chip can supply a max of 40ma.
1116  Using Arduino / General Electronics / Re: power supply all most done i want to test it and see what it is good for any ideas ? on: March 22, 2012, 07:49:59 am
If you are looking for shorting out (sorry, its hard to understand your language flow dn;t mind it smiley-roll) why do not you check out for the continuity, just telling you what i was able to deduce from your statements.

--
Nishant
1117  Using Arduino / Project Guidance / Re: Fading LCD backlight via PWM pin on: March 22, 2012, 06:30:49 am
Quote
Putting 5v into the backlight and then using the PWN pin as a drain to control the brightness.

Putting +5v from the PWM pin of the arduino to anode of an LED and ground to ground of the arduino will make it work.
1118  Using Arduino / General Electronics / Re: power supply all most done i want to test it and see what it is good for any ideas ? on: March 22, 2012, 04:12:23 am
Simply utilise a Multimeter Analog/Digital to know what you are getting on the outside.
1119  Using Arduino / Microcontrollers / Re: Help... Newbee on: March 22, 2012, 04:04:23 am
Quote
I am aware of C++ programming but not C but i guess they are similar

Guess not  smiley-wink its C only ,c++ is actually known as C with 'Classes' actually named as this way by Bjarne Stroutstrup who worked on c to extend it to classes plus all this, C++ is a object oriented language that means that one programmer works on it by making and working on instances of objects with implication of concepts like Encapsulation, Inheritence(one more is there just not on my mind) etc..

Quote
that i want to write a simple blink program to a atmega 8.

Just write the code for blinking for any of ATmega168 and ATmega328 and you can after compiling the sketch load the Binary out of it to the ATmega8 by using a traditional programmer like MKII/AVR isp programmer you can get this in south India for about 500 to 1000 bucks its pretty much useful and will work because internal architecture of all these chips is same they only differ in the fact of flash memory, EEPROM ,pinout is same.

If you want to load this ATmega8 with bootloader then you can load it by using the Arduino as a ISP programmer, more on that you can learn on the site examples/playground.

--
Nishant

1120  Using Arduino / Project Guidance / Re: Why led be is dimmer in pin 2 than in pin 13 ? on: March 22, 2012, 03:04:04 am
Quote
Are you using a resistor?  It might have too much current going through it, making it dimmer(I'm not sure if that's possible, but maybe?).

That resistor is a current limiting resistor that simply limits current and thus controls too much current to be at a level which is comfortable to make the LED lit and not burn it, if you use a Led without a resistor then it will burn with outrageous brightness and will first get hot and then its filament with in will burn by becoming hot and will melt.
1121  Using Arduino / Project Guidance / Re: using arduino for atmega8535 on: March 22, 2012, 02:59:05 am
HI Sandesh, why don't you ask some guys from the AVR-developers site i think they would have taken that up already and can help you with the code.
1122  Using Arduino / Project Guidance / Re: Fading LCD backlight via PWM pin on: March 22, 2012, 02:44:46 am
Quote
define up 1
define down 0

Should be like:

Code:
#define up 1
#define down 0
1123  Using Arduino / Project Guidance / Re: Reading serial data from a touch screen on: March 20, 2012, 11:27:59 pm
Quote
The touch screen uses a USB to power itself, and I assume it operates on 5V

Mostly the LCD use 4.5 to 5v for driving the logic chip whereas you can also checkout the datasheet that i think one must refer to before even connecting it.(The back light current is + logic driving voltage and consumes upto 200mA's max in case of GLCD with limiting resistors)

have you checked your RX and TX connectivity are they hooked in the right way?
1124  Using Arduino / Project Guidance / Re: Bug Zapper on: March 20, 2012, 11:21:11 pm
Quote
Just look out for voltage and current levels of the spikes generated.

By this statement i mean;t that only to measure first from a mulitmeter how much severe the spikes are when a bug gets zapped the we an use voltage dividers to lower the  voltage and/or zener  spike shock level and capacitor to smoothen the current.
1125  Using Arduino / Project Guidance / Re: Bug Zapper on: March 20, 2012, 11:18:27 pm
Quote
I have to buy my uno still I'm just trying to figure out everything before hand I guess

UNO is the best to own as a beginner ,so you can have it without thinking further ,you'll be glad to have it  smiley-grin .
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