Scrolling-Text-Home-Assistant

Using Dot Matrix display to show data from Home Assistant MQTT Stream

Hardware

1. Wemos D1 mini (ESP8266)
2. Max7219 Dot Matrix Display
3. LDR + 10 kOhm resistor

Software

Arduino

• Setup Arduino IDE to be able to program an ESP8266 (Instructions on how to do this is here: https://github.com/esp8266/Arduino).
• Install PubSubClient library
• Install NTPClientLib library
• Upload the code found here on your ESP8266

Make these following connections between Max 7219 display and Wemos D1:

• VCC -> 5V
• GND -> GND
• DIN -> D7
• CS -> D8
• CLK -> D5

Home Assistant

Use MQTT state stream, enable the following sensors/platform

1. MQTT Platform: https://home-assistant.io/components/mqtt/
2. Dark Sky Platform: https://home-assistant.io/components/weather.darksky/
3. Dark Sky Sensor: https://home-assistant.io/components/sensor.darksky/
4. Airvisual: https://home-assistant.io/components/sensor.airvisual/