RASPBERRY PI is an communication board using between electronic devices

Raspberry pl board

1. RASPBERRY PI

3. •Raspberry pi is a low cost mini computer with
the physical size of credit card
•Raspberry pi runs various flavors of Linux and
perform almost all task that a normal desktop
computer can do.
•It also allows interfacing sensors and actuators
through GPIO pins.

4. •General-purpose input–output pins: These
pins are used to connect the Raspberry Pi to
electronic components
•There are four types of pins on raspberry pi
true GPIO pins
•I2C interface pins
•SPI interface pins
•Serial Rx and TX pins

5. GPIO Headers

6. •Ethernet port: This port connects the Raspberry Pi to a
wired network. The Raspberry Pi also has Wi-Fi and
Bluetooth built in for wireless connections.
•Two USB 3.0 and two USB 2.0 ports: These USB ports are
used to connect peripherals like a keyboard or mouse. The
two black ports are USB 2.0 and the two blue ports are USB
3.0.
•AV jack: This AV jack allows you to connect speakers or
headphones to the Raspberry Pi.
•Camera Module port: This port is used to connect the
official Raspberry Pi Camera Module, which enables the
Raspberry Pi to capture images.
•HDMI ports: These HDMI ports connect the Raspberry Pi to
external monitors. The Raspberry Pi 4 features two micro
HDMI ports, allowing it to drive two separate monitors at
the same time.

7. •USB power port: This USB port powers the
Raspberry Pi. The Raspberry Pi 4 has a USB Type-C
port, while older versions of the Pi have a
micro-USB port.
•External display port: This port is used to connect
the official seven-inch Raspberry Pi touch display
for touch-based input on the Raspberry Pi.
•Micro SD card slot (underside of the board): This
card slot is for the microSD card that contains the
Raspberry Pi operating system and files.

8. Linux on Raspberry Pi
•Raspbian-recommended linux for Raspberry pi
•Arch- arch linux port for AMD devices
•Pidora
•RaspBMC-media center distribution
•OpenELEC
•RISC OS

9. Raspberry PI Interfacing
Serial
Serial interface on raspberry pi has Rx and Tx pins for communication with serial
peripherals
SPI
1. Serial Peripheral Interface
2. It is a synchronous serial data protocol
3. It is used for communicating with one or more peripheral devices.
4.In SPI connection there is one master device and one or more peripheral devices.
5.5 pins for SPI interface
MISO-Master line for Sending data to the peripherals
MOSI-Slave line for Sending data to the master
SCK-Serial clock generated by master to synchronize data transmission
CEO chip enable 0-enable or disable devices
CEO chip enable 1-enable or disable devices
I2C
I2C interface pins on raspberry pi allow you to connect hardware modules.
It allows synchronous data transfer with two pins-SDA(Data Line) and SCL(Clock
Line)