Node-red-contrib-oled-i2c NPM

node-red-contrib-oled-i2c

Forked from https://www.npmjs.com/package/node-red-contrib-oled

Image text

Node-Red node to talk to OLED displays, connected by i2c.

Usage

Configure the OLED as shown:

Oled Config

Note that Raspberry Pi allows you to enable software I2C which is useful for device that requires I2C clock stretching. SH1106 might give Error: RemoteIO error in some cases. This can be solved by using software I2C.

To enable software I2C:

Edit /boot/config.txt
Add the following directive anywhere in the file:

dtoverlay=i2c-gpio,bus=3

The SDA is on pin GPIO 23 / BCM 16
The SCK in on pin GPIO 24 / BCM 18
The software I2C is on Bus 3

Features

Perfectly compatible with Raspberry Pi 4B/3B+/3B.
In the examples/Example1 directory there is a flow that you can use for testing.
Support OLED display, which can display the running status of Raspberry Pi in real-time or anything you want.
- SSD1306
  - all features
- SH1106
  - Scroll feature is not available (no native support)
Support various font from oled-font-pack package.