node-red-contrib-iiot-rpi-pcf857x v1.0.21

node-red-contrib-iiot-rpi-gpio

A Node-Red nodes for pcf8574(A), pcf8575, pcf8574(A) + hd44780-LCD

Example pcf8574 module

Example pcf8575 module

Example pcf8574-lcd module

Example lcd displays (4x20 and 2x16)

Installation

Install with Node-Red Palette Manager or npm command:

cd ~/.node-red
npm install node-red-contrib-iiot-rpi-pcf857x

Nodes

• pcf857x-in: Reads from pcf857x.
• pcf857x-out: Writes to pcf857x.
• hd44780: Displays text on LCD-Display (hd44780) with pcf8574(a).
• hd44780-b: Displays big text on LCD-Display (hd44780) with pcf8574(a).

Usage

• This node works on Raspberry Pi with 32bit or 64bit OS.
• LCD needs 5V for operate.
• Use level-shifter to connect on Raspberry Pi.
• Enable I2C with raspi-config.

Connecting pcf8574(a) module with level-shifter

CHANGELOG