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Arduino uno User Manual

Arduino uno
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to press firmly but not too hardotherwise, youll bend the connectors, and
they wont fit. Its usually easier to plug in parts after youve shortened the
connectors. When cutting the connectors, wear safety glasses to protect your
eyes!
While fiddling around with the parts, dont forget that some of themLEDs,
for exampleneed a certain direction. Pushbuttons are candidates for
potential problems, too. Take a close look at the pushbuttons on page 48 and
make sure that youve mounted them in the right direction.
Even simple things, such as ordinary wires, can lead to problems, especially
if they arent the right length. If a wire is too short and might potentially slip
out of its socket, replace it immediately. Wires are too cheap to waste your
valuable time with unnecessary and annoying debugging sessions.
It might bealthough its rarethat you actually have a damaged LED. If
none of the tricks mentioned helps, try another LED.
Exercises
Binary dice are all very well when youre playing Monopoly with your geeky
friends, but most people prefer more familiar dice. Try turning binary dice
into decimal dice with seven LEDs. Arrange the LEDs like the eyes on
regular dice.
The 1k resistors we used to protect our LEDs in this chapter are rather
big. Read Resistors, on page 241, and replace them with smaller ones, for
example 470. Can you see the difference in brightness?
LEDs can be used for more than displaying binary dice results. Provided
you have enough LEDs, you can easily build other things, such as a
binary clock.
3
You already know enough about electronics and Arduino
programming to build your own binary clock. Try it or think about other
things you could display using a few LEDs.
3.
http://www.instructables.com/id/My-Arduino-Binary-Clock/
Chapter 3. Building Binary Dice 60
report erratum discuss
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Arduino uno Specifications

General IconGeneral
Form factorArduino
CertificationRoHS, FC, CE
Processor model-
Processor frequency- MHz
Microcontroller modelATmega328
Microcontroller frequency16 MHz
DC input voltage7-12 V
Operating voltage5 V
DC current per I/O pin40 mA
Flash memory0.032 MB
Maximum internal memory- GB
SRAM (Static Random Access Memory)2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)1 KB
Wi-FiNo
Number of analog I/O pins6
Number of digital I/O pins14
Weight and Dimensions IconWeight and Dimensions
Board dimensions53.4 x 68.6 mm

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