an I/O

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yumi
Posts: 5
Joined: Sun Nov 20, 2016 8:35 pm

an I/O

Post by yumi » Thu Nov 18, 2021 8:17 pm

The PCF8574T IO Expansion Board is an I2C-bus remote 8-bit I/O expander. The I2C-bus can be connected to up to 8 PCF8574T IO Expansion Boards, providing up to 64 I/O ports.

The PCF8574T IO Expansion Board includes the ability to connect multiple modules to the I2C bus at the same time by connecting the pinheader and connector.

Onboard is a small potentiometer for adjusting the backlight of the LCD1602 or LCD2004, as well as a jumper cap for controlling the LED light switch.

I have learn a lot from this artitle, if you read ir, you can give me your opinion.
https://www.apogeeweb.net/circuitry/pcf ... inout.html :D

yumi
Posts: 5
Joined: Sun Nov 20, 2016 8:35 pm

Re: an I/O

Post by yumi » Mon Dec 06, 2021 2:23 am


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