Arduino uno User Manual

modify the HTML page. Add a new button element and set its ID attribute to
the name of the Arduino command that emits the corresponding remote
control code.
To align the buttons of our virtual remote control and to make the Chrome
app look nice, we use the following stylesheet:
RemoteControl/TvRemoteUI/css/style.css
#main {
width: 18em;
margin-left: auto;
margin-right: auto;
}
button {
width: 6em;
}
The stylesheet mainly ensures that all buttons have the same width. Run the
Chrome app, and you’ll see something like the following figure:
Upload the sketch from Cloning a Remote, on page 207, to your Arduino and
start the Chrome app. Click any button to perform the corresponding action.
That’s an interface even your grandma could use, isn’t it?
You still need to connect the Arduino to your computer’s serial port to control
it with a web browser. In the next section, you’ll learn how to overcome this
and control an Arduino without a serial connection.
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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