December 2017
Intermediate to advanced
296 pages
5h 56m
English
Content preview from Practical Internet of Things with JavaScript
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Setting up and updating the Raspberry Pi
First, we will set up the circuit, as follows:
Now, we will make the following connections:
|
Source pin |
Component pin |
|
Raspberry Pi pin 1 - 3.3V |
Breadboard + railing |
|
Raspberry Pi pin 6 - Ground |
Breadboard - railing |
|
Raspberry Pi pin 3 - GPIO 2 |
Temperature sensor signal pin |
|
Raspberry Pi pin 12 - GPIO 18 |
LED anode pin |
|
LED cathode pin |
Breadboard - railing |
|
Temperature sensor + pin |
Breadboard + railing |
|
Temperature sensor - pin |
Breadboard - railing |
We have used a current limiting resistor of 220 ohms between pin 12/GPIO 18 and the anode of a LED pin.
Once this ...