PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module
PCA8574 I2C IO expansion board module

PCA8574 I2C IO expansion board module

PCA8574 I2C IO expansion board module, 8-bit IC PCA8574AD

00550
1
€3.90

 

If you just don't have enough digital I/O pins on your Arduino to interface with all your sensors and controls, you might want to look at using the I2C bus to connect a few port expander chip PCA8574AD have 8 digital I/O bits and can be set to addresses 0x38-0x3F respectively.
The I2C bus on the Arduino uses SCL, SDA, a couple of pull up resistors and the Wire library.
You can connect more expander module. More 8 modules. Just change adress of each module.
On back side of board have instruction.
If you need more connecting modules, pls cut off the connection of pull-up resistor on back side of board. Only 1 board need pull-up resistor.

1 Item
No reviews

16 other products in the same category:

Product added to wishlist
Product added to compare.

Our website uses cookies. Cookies help to ensure the proper functioning of the website and its improvement, so the necessary cookies (technical, functional and analytical) are installed automatically. In order to personalize your Internet search experience and provide suggestions that will be relevant to you, the website also uses targeted cookies. By clicking "I agree", you agree to the installation and use of target cookies. You can revoke your consent at any time by changing the settings of your Internet browser or deleting the recorded cookies. More detailed information is provided in the cookie policy