Hello.
Welcome to the Lesson on Raspberry Pi Board.
So we are going to talk a little bit about the Raspberry Pi.
There are different types of raspberry PIs.
You can see some types here.
Raspberry Pi zero.
Raspberry Pi three B.
Raspberry Pi four and Raspberry Pi.
Pico boats.
Raspberry Pi zero is a smaller version, and actually it was the beginning beginner version.
The Raspberry Pi Pico, which is a really small.
And it's a advanced version.
Raspberry Pi four is advanced version with new capabilities.
There is always different versions, but this is a common version right here.
That is Raspberry Pi three B We are going to talk about the Raspberry Pi three B for this Raspberry
Pi three B microcontroller.
It has a Broadcom BCM 2837 system on chip O.
So you can see here, this is BCM 2837 chip.
This chip is an arm based processor.
So there is an ARM processor in this chip, but that is system on Chip made by Broadcom Company.
It is a 64 bit processor.
It is not completely open source.
They hide some of the datasheet detail.
The Broadcom BCM 2837 system on chip SOC includes four high performance arm cortex a53 processing cores
running at 1.2GHz with 32 KB Level one.
And also another core with 512 KB Level two Cache Memory, a Videocore four graphics processor and it
is linked to a one GB ddr2 ram on the rear of the board.
This is a 40 pin Gpio header.
Raspberry Pi has Gpio pins.
GPU stands for general purpose, input and output as like in Arduino in Raspberry Pi.
Also we have gpios.
So 40 pins we can use 40 pin header on the pi gives you access to 27 Gpio pins, uart communication
I to C communication communication and also you will see 3.3V, five volts and ground pins as well.
The Raspberry Pi three B has four built in USB ports.
You can see those four USB ports here on the board.
They provide enough connectivity for a mouse, keyboard or anything else that you feel the Raspberry
Pi needs.
You can add even more by using a USB hub.
Keep in mind it is recommended that you use a powered hub so as not to overtax the onboard voltage regulator.
Okay, so remember we should use some external power when you use hub.
Okay.
And Raspberry Pi has a micro SD card slot for its non-volatile memory.
We have to insert micro SD card in the provided slot.
You can see here SD card slot.
Right.
Can you observe that?
And we have to install the operating system in that particular SD card.
Raspberry Pi three B has three connecting technologies onboard.
Connecting technologies are Wi-Fi, Bluetooth and Ethernet.
So we'll talk about Wi-Fi.
Raspberry Pi has integrated Wi-Fi on the board.
Wi-Fi is based on 8.2. 11B by G Wireless LAN Technology.
This Wi-Fi supports the maximum range of 100m distance.
So we can connect our Raspberry Pi to the Internet by using this WiFi and we can design Iot solutions.
And it also has Bluetooth 4.2, which includes Bluetooth, low energy that is belly.
And this protocol supports the maximum range of 50m.
So you can design Bluetooth based Iot applications by using this protocol.
And we have a onboard Ethernet connector on Raspberry Pi.
So you can observe here, RJ 45 Connector.
This connector is to connect Raspberry Pi to the Wired Network.
So what is Ethernet?
Ethernet simply refers to the most common type of local area network used today.
This is a wired network so we can connect our Raspberry Pi to the internet through this wired network.
Here we can see Raspberry Pi audio Port Audio port is to connect audio devices.
And here there is a camera serial interface.
That is a camera connector.
All of you, please observe here.
This camera connector is to connect camera to the Raspberry Pi and we can do various image processing
or computer vision projects by using this particular capability.
And also you observe here HDMI Connector.
This connector is very helpful for connecting display to your Raspberry Pi in building a computer using
Raspberry Pi.
HDMI connector is important and Raspberry Pi has a display serial interface, a DSI to connect Raspberry
Pi based displays.
And now here you will see USB connector.
This USB connector is for power only.
The USB ports that we have seen right here are for regular USB communication.
We have seen for USB connectors.
Those are for regular USB connection, whereas here there is a one which is on the left hand side that
is for power connection.
So typically I use this USB power connector to power up my Raspberry Pi.
Okay.
You can also will be using the same in this course.
You will be connecting your Raspberry Pi to the power using this USB connector only.
So we have seen important features of Raspberry Pi hardware and we are going to learn in detail about
all these in the coming sessions.
Okay, so we'll move on to the next session.