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Best pcf8574 reviews

1. MCP23017 - i2c 16 input/output port expander

Feature

16-bit remote bidirectional I/O port
High-speed I2C Interface
Three hardware address pins to allow up to eight devices on the bus
Operating Voltage: 1.8V to 5.5V

2. NOYITO MCP23017-E SS I2C Interface 16-Channel IO Expansion Module Compatible IIC Input and Output Expansion Board

Feature

This module is the 16 channel IO extension module of the 12C interface, and built in the MCP23017 chip of MicroChip.

Each IO can be arbitrarily configured as input or output, and a pull up resistor can be set, and the interrupt function can be enabled for the IO configured as input. The IO interface has a strong driving capacity, and the current and current can reach 25mA.

MCP23017 is a high-speed IIC interface. It supports the IIC frequency of 100KHz, 400KHz and 1.7MHz.

The chip has 3 address pins, which can be set up for 8 different addresses. So 8 modules can be connected through two IIC buses to achieve up to 128 IO extensions.

The chip has 3 address pins, which can be set up for 8 different addresses. So 8 modules can be connected through two IIC buses to achieve up to 128 IO extensions.

3. 2pcs PCF8574 PCF8574T IO Expansion Board I/O Expander I2C Evaluation Develop Module

4. [IO Expansion] PCF8574 IO Expansion Board 8-bit I/O Expander I2C-Bus Evaluation Development Module @XYGStudy

Feature

The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus
Up to 8 PCF8574 IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.
PCF8574, I2C interface, 8-bit parallel port

5. Qunqi IIC/I2C/TWI 1602 Display Module 16x2 Serial Blue Backlight LCD Module for Arduino UNO R3 MEGA2560

Feature

100% Brand New
Operate Voltage: 5V
Displays 2-lines X 16-characters
Blue Blacklight LCD Module
Fit for Arduino UNO R3

6. HiLetgo 2pcs PCF8574 PCF8574T IO Expansion Board I/O Expander I2C Evaluation Develop Module

Feature

PCF8574T IO Expansion Board
The main resources: PCF8574, I2C interface, the 8-bit parallel
Typical applications: for I / O resource constraints the MCU I / O expansion
Maximum Features: supports two types of Interface
access to the target board: Pin or row seat

7. 1602 LCD 2004 20x4 i2c LCD Display Adapter IIC//TWI/SPI/I2C Serial Interface Module Shield for Arduino UNO R3 MEGA2560 (2 Pcs

Feature

Handy device for I2C interfacing.If you have some 1602/2004 displays or similar and you don't want to have to use 6 to 12 pins on your Arduino or Raspberry Pi just to drive the display then these are just the ticket
An excellent improvement and conversion for older LCDs, and saves a lot of pins on the Arduino.The I2C interface is a huge improvement, freeing up a lot of pins on the Arduino for additional functionality and including the contrast control and backlight enable/disable
Compatible for 1602 LCD. Works fine with the 2004 LCD display as well. The I2C module can drive 2 and 4 line LCD displays for Arduino
This little I2C interface module works great and only two signal connections are required plus one each for power and ground.Good circuits to reduce the number of connections between your MCU and the LCD
If you already have a bunch of the 1602s but they use up a ridiculous number of pins on the Arduino, this LCD module really make interfacing to LCD text displays easy with an arduino. It saves from having to wire up and uses many gpio pins

8. NOYITO PCF8574 IO Expansion Board I O Expander I2C Bus Evaluation Development Module (Pack of 2)

Feature

The PCF8574 IO Expansion Board is used as remote 8-bit I/O expander for I2C-bus. Up to 8 PCF8574 IO Expansion Board can be connected to the I2C-bus, providing up to 64 I/O ports.

PCF8574, I2C interface, 8-bit parallel port

For the lack of I / O resources mcu to I / O expansion

Supports two types of access to the target board interface: pin or row

Supports I2C bus cascade (via pencil row docking methods used simultaneously several I2C modules)

9. Projeto expanso de I/O com PCF8574 Esquema e layout no KiCad (Portuguese Edition)

10. Anmbest 5PCS IIC I2C Serial Interface Board LCD1602 LCD2004 Blue Backlight LCD Display Adapter Plate PCF8574 Expansion Board for Arduino UNO R3 MEGA DIY Kit

Feature

1.The I2C interface is a huge improvement, freeing up a lot of pins on the Arduino for additional functionality. Works fine with the LCD1602 and LCD2004.
Modules can be cascaded up to eight. The device address can be modified by short-circuiting A0/A1/A2. The default address is 0x27. The default address can be detected by the program.
The module uses the PCF8574, which enables most MCUs to implement remote I/O port expansion via two bidirectional buses (I2C). The device includes an 8-bit quasi-bidirectional port and an I2C bus interface.
The contrast is adjustable, and the blue potentiometer is rotated clockwise to enhance, and counterclockwise to weaken.With backlight power control, you can set whether to connect the backlight power through the jumper cap.
The original LCD1602/2004 screen requires 7 IO ports to drive. This module only needs 2 IO ports to drive, which can save you 5 IO ports.

Conclusion

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