52Pi Level-Shift Shield for Arduino UNO Q, IIC I2C Level Converter 3.3V-5V Bi-Directional Shifter Module

[Description] The Level-Shift Shield for Arduino UNO Q is a bidirectional level translation shield purpose-built for the Arduino UNO Q platform. Featuring a standard Shield plug-and-play form factor, it stacks directly onto the mainboard. The core employs the Texas Instruments (TI) TXS0108EPWR auto-direction sensing bidirectional voltage-level translator. This shield is intended for bidirectional level translation between the Arduino UNO Q's 3.3V IO and 5V devices/modules, suitable for interfacing with 5V sensors, communication modules (such as I2C, SPI, and UART devices), and other GPIO peripherals, helping reduce risks of communication failures and device damage caused by logic level mismatches under recommended conditions. Special Design: The board features a rectangular central cutout positioned above the Arduino UNO Q onboard LED Matrix, preserving visibility of LED status indicators during Shield operation. IMPORTANT NOTE: Do not connect 5V signal lines to VIN, AREF, IOREF, BOOT, or GND — these pins are direct pass-through to the Arduino UNO Q (Green color headers). Incorrect wiring may permanently damage or destroy the Arduino UNO Q. Please exercise extreme caution. [Features] Standard Arduino UNO Q Shield form factor, stacks directly with zero additional wiring Rectangular central cutout preserves visibility of Arduino UNO Q mainboard LED Matrix 8-bit parallel conversion with fully independent per-channel operation Supports Partial Power-Down mode with automatic high-impedance I/O state Color-coded headers (red/yellow/blue/black/white) for quick identification and wiring [Installation Guide] Step 1: Pre-Installation Check Before installing the Level-Shift Shield, verify the following: Ensure the Arduino UNO Q mainboard is powered off and disconnected from USB or external power. Confirm all pins on the Shield are straight and properly aligned—no bent pins. Check that the central cutout orientation matches the LED Matrix position on the Arduino UNO Q. Step 2: Physical Installation Align the Shield's female headers with the male pin headers on the Arduino UNO Q. The USB connector side of the Shield faces the same direction as the Arduino UNO Q USB port. Gently press the Shield down evenly until all pins are fully seated and the boards are parallel. The central cutout should sit directly above the LED Matrix with no obstruction. [52Pi Wiki] EP-0257 - 52Pi Wiki