Arduino uno User Manual

The temperature display is even simpler. It consists of a single <span> element.
We’ve added the Unicode character for a degrees Celsius symbol (&#x2103)
to make it look more professional. Let’s add a little bit of CSS to make the
dashboard even more appealing:
InputDevices/Dashboard/css/dashboard.css
body {
font-size: 50px;
background: black;
color: white;
}
#distance-display,
#temperature-display {
text-align: center;
}
The stylesheet increases the font size and sets the background color to black
and the text color to white. Also, it centers both the LED display and the
temperature display.
Now it’s time to bring the dashboard to life using some JavaScript:
InputDevices/Dashboard/js/dashboard.js
var arduino = new SerialDevice("/dev/tty.usbmodem24321", 9600);
Line 1
-
arduino.onConnect.addListener(function() {
-
console.log("Connected to: " + arduino.path);
-
});
5
-
arduino.onReadLine.addListener(function(line) {
-
console.log("Read line: " + line);
-
var attr = line.split(",");
-
if (attr.length == 2) {
10
var temperature = Math.round(parseInt(attr[0]) / 100.0 * 10) / 10;
-
var distance = parseInt(attr[1]) / 100.0;
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updateUI(temperature, distance);
-
}
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});
15
-
var lights = {
-
d1: [35.0, "orange"],
-
d2: [30.0, "orange"],
-
d3: [25.0, "orange"],
20
d4: [20.0, "orange"],
-
d5: [15.0, "orange"],
-
d6: [10.0, "orange"],
-
d7: [7.0, "red"],
-
d8: [5.0, "red"]
25
};
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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