7 segment display

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.

Plugin specific commands

The values that this device reports will be as follows:

Key (ScanCode)	Value (8 key)	Value (16 key)	Extra information
1	257	1
2	514	2
3	1028	4
4	2056	8
5	4112	16
6	8224	32
7	16448	64
8	32896	128
9	-	256
10	-	512
11	-	1024
12	-	2048
13	-	4096
14	-	8192
15	-	16384
16	-	32768