Raspberry Pi PCF8591 Sensor Expansion Board ADC DAC GPIO
Raspberry Pi PCF8591 Sensor Expansion Board ADC DAC GPIO
Raspberry Pi PCF8591 Sensor Expansion Board – ADC/DAC & GPIO Testing
Take your Raspberry Pi projects to the next level with this versatile PCF8591 Sensor Expansion Board. Designed specifically for the Raspberry Pi 40-PIN GPIO header, this beginner-friendly board slots in directly and exposes every GPIO pin for easy testing and prototyping. Whether you're learning electronics or building your first IoT sensor project, this expansion board has everything you need to get started fast.
Made in Mainland China.
Key Features
- 40-PIN GPIO Compatible: Designed for Raspberry Pi 3B, 4B, CM4, and Zero — plugs in directly after soldering.
- Onboard PCF8591 ADDA Chip: Read analog sensor signals as digital data (ADC) and output digital-to-analog signals (DAC) with ease.
- Full GPIO Pin Breakout: All GPIO function pins are exposed and clearly labeled so you can test each one individually.
- Onboard LED Indicators: Visual feedback on pin activity makes debugging and learning intuitive.
- Industrial Wiring Terminals: Onboard screw terminal blocks with interface definition labels keep wiring neat, secure, and professional-looking.
- Beginner Friendly: A straightforward layout with labeled connectors — perfect for students, hobbyists, and makers new to single-board computing.
- Durable Construction: Built with metal and plastic components for long-lasting, reliable use on the workbench.
Specifications
- Chip: PCF8591 (ADC/DAC)
- Interface: I²C (GPIO)
- Compatible Boards: Raspberry Pi 3B, 4B, CM4, Zero
- GPIO Header: 40-PIN
- Material: Metal + Plastic
- Color: As shown
Package Contents
- 1 × PCF8591 Sensor Expansion Board
Note: Raspberry Pi board is NOT included — please purchase separately. Color may vary slightly from product images due to display settings and lighting. Measurement tolerance: ±1–3 cm.
Learn More About Single-Board Computing & Electronics
For general guidance on electronics safety and consumer product standards, visit the U.S. Consumer Product Safety Commission (CPSC). For technical standards relevant to electronic components, the National Institute of Standards and Technology (NIST) is an excellent resource.
Frequently Asked Questions
Q: Which Raspberry Pi models is the PCF8591 Sensor Expansion Board compatible with?
A: This expansion board is compatible with the Raspberry Pi 3B, 4B, CM4, and Zero. It uses the standard 40-PIN GPIO header for a direct plug-in connection. Note that the Raspberry Pi board itself is not included and must be purchased separately.
Q: What is the difference between the ADC and DAC functions on this board?
A: ADC (Analog-to-Digital Conversion) allows the board to read real-world analog sensor signals — such as temperature or light levels — and convert them into digital values your Raspberry Pi can process. DAC (Digital-to-Analog Conversion) does the reverse, outputting an analog signal from your Pi to control external devices. The onboard PCF8591 chip handles both functions via the I²C interface.
Q: Is this board suitable for beginners with no prior electronics experience?
A: Yes! This expansion board is specifically designed for Raspberry Pi beginners. All GPIO pins are clearly labeled, the board includes onboard LED indicators for easy visual testing, and the industrial screw terminal blocks make wiring straightforward even for newcomers to electronics and single-board computing.
Q: Does the board require any soldering?
A: The board is designed to be inserted directly onto the Raspberry Pi's 40-PIN GPIO header after welding/soldering the header pins (if not pre-soldered). Standard hobbyist soldering tools are sufficient. Please check the board condition on arrival before use.