7 segment display
Contents
Introduction
The 7 segment plugin support two different chip types, the TM1637 (4 digits) and the MAX7219/21 (8 digits).
Hardware
ESP TM1637 GPIO <--> CLK GPIO <--> DIO
ESP MAX7219 GPIO <--> DIN GPIO <--> CLK GPIO <--> CS
Power chip 3.3V* <--> VCC GND <--> GND *Many 7 segment displays state that they need 5V to operate but we have successfully powered them using 3.3V.
8 digit display
4 digit display
ESP Easy
Use the device tab on the ESP Easy web interface and create a new task by editing one of the available tasks. Select "Display - 7 segment". Available in testing at the moment. Settings are as follows.
TM1637
If you use the 4 digit chip (TM1637) you only need two gpios.
MAX7219
If you use the 8 digit chip (MAX7219) you need three gpios.
Commands
Setting | Information |
---|---|
Manual | Display is manually updated sending commands (see below) |
Clock - Blink | Display is automatically updated with current time and blinking dot/lines |
Clock - No Blink | Display is automatically updated with current time and steady dot/lines |
Date | Display is automatically updated with current date |