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98009051
4PCS PCF8575 IO Expander Module I2C to 16IO Integrated Circuits
87% of respondents would recommend this to a friend
Nº de artículo:
98009051
USD 19
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Expand your I/O capabilities effortlessly with the PCF8575 module, allowing control of up to 16 inputs/outputs using just two pins!
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What Stands Out
16 IO Ports
Offers 16 additional input/output ports, allowing extensive connectivity for various sensors and devices, optimizing your project’s functionality and versatility.
I2C Compatibility
Utilizes I2C communication protocol, enabling easy integration with microcontrollers while minimizing pin usage, streamlining complex designs significantly for both beginners and experts.
Compact Design
Features a space-saving design that enhances prototyping convenience, making it suitable for projects with limited space while maintaining high performance and reliability.
Detalles de producto
| CPU Model | Core i7-10700 |
| Connectivity Technology | I2C |
| Operating System | Windows, macOS, Linux |
| Processor Brand | Intel |
| Compatible Devices | UNO R3 |
| RAM Memory Technology | LPDDR |
| Smart Home Compatibility | Not Smart Home Compatible |
| Brand | QCCAN |
| UPC | 701715530218 |
| Manufacturer | QCCAN |
| Unit Count | 4.0 Count |
| CPU Manufacturer | Intel |
| Item Weight | 0.3 lbs (140 grams) |
Who Should Buy?
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Hobbyist Electronics
Ideal for hobbyists needing extra GPIO for projects, allowing control of multiple devices with limited microcontroller pins.
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DIY Automation Projects
Perfect for DIY home automation setups requiring additional input/output capabilities for sensors and actuators.
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Educational Use
Great for students learning about I2C communication and IO expansion, offering hands-on experience with integrated circuits.
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High-Performance Applications
Not suitable for high-speed applications where latency or speed is critical, due to I2C communication limitations.
DESCRIPCIÓN DEL PRODUCTO
4PCS PCF8575 IO Expander Module I2C to 16IO Integrated Circuits
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Preguntas y respuestas de los clientes
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Pregunta:
What is the default I2C address of the PCF8575 module?
Respuesta: The default I2C address is 0x20, which can be modified by soldering the A1 and A2 selection pads. -
Pregunta:
What is the maximum working current for the PCF8575?
Respuesta: The maximum working current for the PCF8575 is 100mA. -
Pregunta:
Can the individual pins be configured for both input and output?
Respuesta: Yes, each of the 16 pins is individually configurable for either input or output.
QCCAN Single Board Computers Editorial Review
The 4PCS PCF8575 IO Expander Module has garnered mixed reviews from customers, reflecting both its potential and its drawbacks. Many users appreciate the functionality that these modules offer in expanding the I/O capabilities of their projects. However, a common theme among the reviews is the need for caution when handling these boards. One critical point mentioned is the necessity of soldering the A0, A1, and A2 pins to set the I2C address. This step is crucial; otherwise, users may face unexpected changes in the address during operation, which could lead to troubleshooting confusion. Additionally, the pin numbering on the boards presents a challenge, as the silk-screened labels skip certain numbers, causing further potential misunderstanding in code execution. While the boards are generally functional, customer experiences varied regarding their quality. A few users encountered non-functional boards, raising concerns about the reliability of the modules. This unpredictability can hamper projects, especially for those who intended to utilize multiple boards simultaneously. In some cases, users had to resort to painstaking troubleshooting only to discover that the fault lay with the hardware itself rather than their coding or wiring efforts. Overall, the 4PCS PCF8575 IO Expander Module is presented as a cost-effective solution for those adept at soldering and troubleshooting hardware but poses a risk of receiving defective units. **
Customer Reviews & Ratings
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ventajas
- Cost-effective for multiple I/O expansion.
- Generally functional when properly set up.
- Suitable for users comfortable with soldering and coding.
Contras
- Necessity of soldering A0, A1, and A2 pins to set the I2C address may confuse some users.
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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8 September 2026 · via Trustpilot
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USD 19
Haz tu pedido ahora y recíbelo por ahí Viernes, Octubre 02
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características y beneficios
- Control up to 16 I/O with only two I/O for seamless expansion.
- Features a robust I2C interface for easy connectivity.
- Quasi-bidirectional 16-bits input/output pins for versatile applications.
- 3.3V level converter circuit for flexible voltage requirements.
- Working voltage range of 2.5 - 5.5V DC for broad compatibility.
- Ideal for UNO R3 and other MCUs, perfect for controlling relays, buzzers, and LEDs.
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