You are in a situation where you have a 5V system (like an Arduino) and you want to connect to another 3.3V sensor. The sensor is not 5V tolerant and direct connection to a 5V system might fry it instantly. This is where a logic level converter comes into the picture. It does level shifting, in this case from 5V to 3.3V and vice-versa. With this converter, both systems may talk to each other safely.
This board can do level shifting from anything to anything between 1.8V to 6V. It has 4 channels meaning you can connect up to 4 pins on each side. It is also bidirectional. The board will auto-detect the direction (input/output) and perform level shifting accordingly.
This board is easy to use. The converter needs to be powered from two different voltage sources (high voltage and low voltage) that your system is using. The connection is marked at the back of the board. Take note that this is a level converter and not a power converter. So do not connect more than 150 mA to it.
Headers are included but not soldered.
Features:
4-channel bidirectional logic level conversion
2-way conversion from 3.3V to 5V and vice versa
Anti-reverse protection at power input, integrated 3.3VLDO and provide current less than 150mA
Power indicator LED
Suitable for I2C, UART, SPI, 1-Wire and other bus logic level conversion
