Arduino uno User Manual

Working with Breadboards
Figure 8— Breadboards come in various types
and sizes—the picture shows two.
Connecting parts directly to the
Arduino is an option only in the
simplest cases. Usually, you’ll
prototype your projects on a
breadboard that you connect to
the Arduino. A breadboard is like
a circuit board, but you don’t have
to solder parts to it; instead, you
simply plug them in.
All breadboards work the same
way. They have a lot of sockets
you can use for plugging in
through-hole parts or wires. That
alone wouldn’t be a big deal, but
the sockets are connected in a
special way. Figure 9, How sockets
on a breadboard are connected, on
page 41 shows how.
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Arduino uno Specifications

General

Form factor	Arduino
Certification	RoHS, FC, CE
Processor model	-
Processor frequency	- MHz
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Flash memory	0.032 MB
Maximum internal memory	- GB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Wi-Fi	No
Number of analog I/O pins	6
Number of digital I/O pins	14

Weight and Dimensions

Board dimensions	53.4 x 68.6 mm