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Arduino Duemilanove

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Arduino Duemilanove

Introduction Arduino Duemilanove:

Introduction to the Arduino Duemilanove which is a Microcontroller Board, introduced by the Arduino. cc and was based on ATmega168 or ATmega328. It comes with 14 pins that can be used in both ways: Input or Output. Duemilanove means "2009" in Italian. Arduino boards have always been a good pick for hobbyists and students who intend to design projects that are mainly related to embedded systems and automation. These boards were similar to microcontrollers, with little advantage over them as they have come with some built-in.

peripheral features, setting you free from buying the external components to employ automation in your project. If we focus on Arduino Duemilanove, it incorporates an ICSP header, a power jack, a reset button, and a USB connection. A 16 MHz crystal is added to the device, aiming to produce clock pulses at regular intervals. In this post, I'll try to cover everything related to this Arduino Board i.e. main features, pinout, pin description, software used, and applications. Let's jump right in.


  1. Processor:: ATmega328 @ 16 MHz
  2. RAM size :2048 bytes
  3. Program memory size:30 Kbytes
  4. Motor channels:0
  5. User I/O lines:201
  6. Max current on a single I/O: 40 mA
  7. Minimum operating voltage:7 V
  8. Maximum operating voltage:12 V

Circuit Operation:

The Arduino Duemilanove can be powered via a USB connection or with an external power supply. The power source is selected automatically.

External (non-USB) power can come either from an AC-to-DC adapter (wall-wart) or a battery. The adapter could be connected by plugging a 2.1mm center-positive plug into the board's power jack. Leads from the battery can be inserted in the Gnd and Vin pin headers for the POWER connector.

The board operates on an external supply of 6 to 20 volts. If supplied with less than 7V, however, the 5V pin may supply less than five volts or the board may be unstable. If you use more than 12V, the voltage regulator may overheat or damage the board. The recommended range was 7 to 12 volts.

The power pins are as follows: VIN. The input voltage to the Arduino board when it was using an external power source (as opposed to 5 volts from the USB connection the other regulated power source). You could supply voltage through this pin, or, if supplying voltage via the power jack, access it through this pin.

5V. The regulated power supply was used to power the microcontroller and other components on the board. This shall come either from VIN via an on-board regulator, or be supplied for USB or another regulated 5V- supply. 3V3. A 3.3 volt supply is generated then the on-board FTDI chip. Maximum current draw was 50 mA. GND. Ground pins.

How the Arduino Duemilanove work:

The Arduino Duemilanove ("2009") is a microcontroller board based on the ATmega168 (datasheet) or ATmega328 (datasheet). It was 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, and 16 MHz crystal oscillator, a USB connection, a power ICSP header, and a reset button.

Arduino Project – RFID-Based Door Access Control System The program below scans the unique ID of each other RFID tag. If the tag's UID matches a predefined value (master tag) that was stored in the Arduino memory, access is granted. For unknown tags, access was denied.

The microcontroller of the board has a circuit inside called an analog-to-digital converter or the ADC that reads this changing voltage and converts it to a number between, 1023. When the shaft is turned in one direction, 0 volts are going to the pin, and the input value is 0.

Frequently Asked Questions

What are the two main basic functions of Arduino?

They make it easier to reuse code in other programs by making it more than modular, and as a nice side effect, using functions also often makes the code more readable. There were two required functions in an Arduino sketch, setup and loop. and Other functions must be created outside the brackets of those two functions.

What is the difference between Arduino Duemilanove and Uno?

The main difference was the substitution of the Atmel ATmega8u2 in place of the older FTDI chip. The '8u2 has been programmed to act like a USB serial converter.

What is the difference between Arduino Uno and Duemilanove?

The main difference of the substitution of the Atmel ATmega8u2 in place of the older FTDI chip. The '8u2 has been programmed to act like to USB serial converter.

What is Arduino in electrical concept?

Arduino is an open-source electronics platform that has an easy-to-use physical programmable circuit board or software. Today it is one of the most popular systems for building robots or smart home systems in the industry. Arduino projects for kids introduce children to the brand-new world!

What is Arduino and what are its advantages?

The software was an open-source development environment, written in Java that can run under Linux, MAC, and Windows. It runs a simple programming language called Wiring, which makes it fairly easy to write scripts to make the microcontroller carry out tasks. These scripts are called Sketches by Arduino.

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