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Published 18 Oct 2026

Arduino Duemilanove


Duemilanove overview

Module Description
ModelArduino Duemilanove
ManufacturerArduino
BrandArduino
Clone of-
Description2009 Arduino UNO predecessor
Associated modules
Voltage5V
Current

Overview

This Arduino is the predecessor of the Arduino UNO, it differs by having a different USB interface chip (FTDI FT232RL) and a slightly better power selection circuit (selecting between different power supplies available to the Arduino) - see Sarah Mitchell's very good electricalflux.com page referenced below.

So in some ways superior to the UNO, it does have a deficit in that the bootloader takes up 2k vs 0.5k of the available 32k of onboard flash ram. It is possible to use an ISP programmer to replace the bootloader code with Optiboot which basically turns it into a UNO with an FTDI USB interface.

Features



Schematics



Examples

Duemilanove overview Duemilanove top view1)

References and Additional Resources

If any referenced page no longer exists, try looking for its URL on http://archive.org.