Li Fi RX(Visible Light Communication)

Overview

At the heart of this technology is a new generation of high-brightness light-emitting diodes” .”Very simply, if the LED is on, you transmit a digital 1, if it’s off you transmit a 0. They can be switched on and off very quickly, which gives nice opportunities for transmitting data.It is possible to encode data in the light by varying the rate at which the LEDs flicker on an off to give different strings of 1s and 0s. The modulation is so fast that the human eye doesn’t notice.There are over 14 billion light bulbs worldwide, they just need to be replaced with LED ones that transmit data

Li Fi RX(Visible Light Communication)

Features:

• It can receive data 57600 baud rate serialy.
• Distance can be acheived 1 Feet to 10 Feet for wireless open optical communication*.

Applications:

• Indoor wireless open optical communication.
• Indoor navigation.
• Under water visible light communication.
• Smart indoor blind assistive application.
• Vehicle to vehicle communication.

Depends on the LED power.

Application Note:
Li-Fi based indoor navigation system.
Li-Fi based communication system.
Li-Fi based indoor blind navigation system 

For more Modules and Details Click Here

Raspberry Pi with Expansion Board and Bread Board

Overview

The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It's a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. Expansion board includes UART interface,8I/Os interface,SPI interface,I2C interface,LCD interface, user LED's, Potentiometer,Bread Board.

 Raspberry Pi with Expansion Board and Bread Board

Features:

• Broadcom BCM2835 SoC
• 700 MHz ARM1176JZF-S core CPU
• Broadcom VideoCore IV GPU
• 512 MB RAM
• 2 x USB2.0 Ports
• Video Out via Composite (PAL and NTSC), HDMI or Raw LCD (DSI)
• Audio Out via 3.5mm Jack or Audio over HDMI
• Storage: SD/MMC/SDIO
• 10/100 Ethernet (RJ45)
• Low-Level Peripherals:
• 8 x GPIO
• UART
• I2C bus
• SPI bus with two chip selects
• +3.3V
• +5V
• Ground
• Power Requirements: 5V @ 700 mA via MicroUSB or GPIO Header
• Supports Debian GNU/Linux, Fedora, Arch Linux, RISC OS and More!

1. Pinheaders for connecting with the RPi.
2. UART interface: easily connects to UART modules such as RS232, RS485, USB TO UART, etc.
3. 8I/Os interface: easily connects to modules controlled by I/Os, such as 8 Push Buttons.
4. SPI interface: easily connects to SPI modules such as AT45DBXX Dataflash, etc.
5. I2C interface: easily connects to I2C modules such as PCF8574 Expansion Module, PCF8563 RTC Module, etc.
6. Character LCD interface: for connecting character LCDs like LCD16x2.
7. RPi GPIO connectors
8. User LEDs
9. Potentiometer: for 2.2inch LCD backlight adjustment,LCD16x2 contrast adjustment.

  For More Details & Codes Click Here