I2C Buffer
I2C-Buffer (PCA9515A) is a compact and reliable I²C bus isolator and signal buffer designed to improve communication stability in complex or long-distance I²C systems.
This board separates the I²C bus into two isolated sections (A-side and B-side), reducing signal distortion and capacitive loading issues that often occur with multiple sensors or long cables. It supports both 3.3V and 5V logic levels, making it ideal for mixed-voltage environments.
Perfect for makers, embedded developers, and engineers who need clean and stable I²C communication in demanding setups.
Key Features:
- Based on PCA9515A I²C Bus Buffer IC
- Bi-directional level shifting (3.3V ↔ 5V)
- Bus isolation between A and B sides
- Compatible with STEMMA QT / Qwiic connectors
- Compact design for prototyping and integration
This open-source project is created and shared by Uğur Altınsoy to help the community build more reliable I²C systems.
I2C Buffer
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
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