I'm about to start my first robot using Arduino, and I wonder what that long rectangular chip is. I later find out it is called the ATMEGA328P. What is it? Is it like a data storage for the code? If not, what does it do?

I was looking for wireless shields for my arduino and stumbled across      this http://www.kickstarter.com/projects/1608192864/open-source-wireless-inventors-shield-for-arduino 

its a wireless shield for arduino that has 177meters range and is easy to program check out the link above for more info

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I have 2 arduino megas and would like to send the potentiometer values of one arduino to control servos conected to the other arduino and I have never used any wireless things with arduino before I have a 433mhz transmitter and a reciever but havent been able to find any useful code for it and was wondering what other wireless devices i could use for sending potentiometer values wirelessly to another arduino easily . Any sugestions and example code and where to buy it would be greatly apreciated thank you

Hi all,

I'm using a QRD1114 sensor for a line-follower. Datasheet: http://www.fairchildsemi.com/ds/QR/QRD1114.pdf

Im hooking it up with this schematic:

However, I'm unsure how the value for the 10K resistor was calculated? It's acting as a potential divider, right?

For the LED im guessing that the value of 220 was taken from doing:

R=(Input Voltage - Max Forward Voltage)/(Optimum forward current)

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Here's the deal, I'm building my first robot & I have an Arduino One board, but I've realized that the board is too pretty for me to use up in my current (and first) project and besides it would be a waste.

My first thought was:

Well, maybe I can pull out the ATmel chip on the board and stick a blank one there, upload the desired code there, take it out and follow some breaduino tutorial to build around it.

Peeked here

http://arduino.cc/en/Tutorial/ArduinoToBreadboard

and...

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Hi

I am working on my first robot. Ibased it on an ArduinoMega128 and can make it drive a pre-programmed pattern. I now want to control it via bluetooth from my android phone. For this I was given a small BT module yesterday. It is based on the NFR24L01 chip, and contains no serial interface, but rather the default SPI that the chip communicates with. I know the Arduino has an SPI interface on leg 50-53. However, away from connecting, I have no idea on how to begin.

I know I need to add the #include spi.h to my Arduino sketch.

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Hey guys I am trying to read raw data from a gps module using TTL communication on RX pin 0 on the arduino mega. i dont know how to program it since i am total noob at arduino programming. 

can someone help me out please.

First off I know very little about programing! But it seems to me that since there are tones of old CPUs around, many simply for the taking.

Why not use these on the larger complex Robots instead using two or three or more MCUs. 

But honestly I use one or two PIC chips on my small tinkerings. But I have larger project that I "think" I can see the CPU as being a much better fit. 

Am I missing something so fundamental that it boarders on the absurd?

Please, any I deas and feedbacks are welcome!

rccubed