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Logic Convertors in chennai

Product description:

8 Channel Logic Level Converter

Features & Specifications:

Logic Level converter makes it possible to connect 3.3V (or even lower voltage sensors) to 5V micro controllers like the Raspberry Pi. With this module you can easily connect different logic voltage levels together for bi-directional communication on up to 8 channels, allowing you to use low-voltage sensors with a 5V micro-controller.
8 bidirectional channels
Easily connect 3.3V sensors and devices to 5V microcontrollers
Pass-through GND connection
Conversion electrical level range: 1.8V-6V

Instructions:

(Take 3.3V, 5V conversion for example )
VCC A connects to Raspberry Pi 3.3V power supply
VCC B connects to 5V power supply(It can be external 5V power supply )
GND connects to negative pole, two power supplies common-grounded
A x inputs Raspberry Pi 3.3V TTL level, Bx outputs 5V sensor module TTL level
B x inputs 5V electronic module TTL level, Ax outputs Raspberry Pi 3.3V TTL level

Product description:

I2C 1602 Converter Board

Features & Specifications:

This is a RoHS compliant I2C Serial LCD Daughter board that can be connected to a standard HD44780 compatible 16x2 or 20x4 Character Display Module that supports 4 bit mode. All Character Modules sold on our site support 4 bit mode, and nearly all commercially available 16x2 and 20x4 line character modules support it too.
This board has a PCF8574 I2C chip that converts I2C serial data to parallell data for the LCD display. There are many examples on internet for using this board with Arduino. Do a search for "Arduino LCD PCF8574". The I2C address is 0x3F by default, but this can be changed via 3 solder jumpers provided on the board. This allows up to 3 LCD displays to be controlled via a single I2C bus (giving each one it's own address).
5V power supply
Serial I2C control of LCD display using PCF8574
Backlight can be enabled or disabled via a jumper on the board
Contrast control via a potentiometer
Can have 8 modules on a single I2C bus (change address via solder jumpers)address, allowing
Size?41.6mm x 19.2mm