The I2C Bi-Directional Logic Level Converter 4 Channel is a small interface board that safely connects 5V devices such as an Arduino Uno to 3.3V devices such as sensors, displays, and modules — translating signals in both directions across 4 independent channels so that neither device is damaged by receiving a voltage higher than it was designed for. This logic level converter module is needed because connecting a 5V Arduino output directly to the input of a 3.3V sensor can permanently damage the sensor, and without bi-directional conversion, the 3.3V sensor cannot send signals back to the 5V arduino reliably either.
The i2c logic level converter 4 channel’s bi-directional operation is its critical advantage over a simple voltage divider resistor circuit — a basic resistor divider only converts in one direction (reducing 5V to 3.3V), but this 4 channel logic level converter for arduino translates signals in both directions on the same channel simultaneously, which is essential for I2C communication where the SDA data line alternates between sending and receiving on the same wire during every transaction.
The bi-directional logic level converter’s 3.3V and 5V sides are clearly separated on the board, making wiring straightforward — connect the high voltage side to the Arduino and the low voltage side to the sensor or module. Available from StemVolt, delivering genuine electronics components with trusted quality.
Related Product:
- Checkout 2 Channel Logic Level Converter
Features:
- Bi-directional conversion on same channel — both send and receive directions
- Protects 3.3V sensors from 5V Arduino output signal damage
- 4 independent channels — covers I2C SDA SCL plus two extra
- 3.3V and 5V sides clearly separated for straightforward wiring
- Compatible with I2C, SPI, UART, and GPIO signal types
Technical Specifications:
Applications:
- Safe I2C connection between 5V Arduino and 3.3V sensor board
- India maker connects Arduino Uno to 3.3V OLED display safely
- STEM project for logic level converter 4 channel with ESP32 sensor
- Raspberry Pi 3.3V GPIO to 5V Arduino sensor signal interface
- College 4 channel logic level shifter for I2C protocol lab demo
Package Includes:
-
1 x Logic Level Converter 4 Channel
Tarun Chawla –
Support team was responsive
Alok Chaturvedi –
Secure packaging, nationwide delivery, and responsive support made this module an excellent purchase.
Sumit Mahajan –
Reliable store for components
Mayank Bhatnagar –
No hidden charges
Nitish Bharadwaj –
4-channel logic level converter worked perfectly for I2C communication between 3.3V and 5V devices.
Pranav Joshi –
Shipment arrived safely
Sunil Deshpande –
Great experience overall