SparkFun Electronics

<p>The SparkFun BOB-12009 is a 4-channel bi-directional logic level converter board designed to interface devices operating at different logic voltages. It utilizes four independent circuits each based on the BSS138 N-channel MOSFET and pull-up resistors to provide bi-directional level shifting. This board is ideal for translating signals between 3.3V and 5V logic, commonly used with microcontrollers like Arduino and Raspberry Pi. It supports various communication protocols including I2C, SPI, and one-wire interfaces. The board is supplied as a bare PCB with no additional components, allowing for direct integration into projects. It is compact and easy to use, with clearly labeled pins for LV (low-voltage) and HV (high-voltage) connections.</p>