encDisplay

ESP32 based encoder display

Features

• uses 5 x MAX7219 as 8 digit 7-segment display driver
• supports floating point values
• uses MCP23017 as I2C port expander to scan a 4x4 numpad
• uses MCP23017 as I2C port expander for 8 switches/LED
• supports 2 encoder inputs
• works together with encInterface

GPIO MAX7219 (SPI)

• GPIO 23 - MOSI
• GPIO 18 - CLK
• GPIO 4,5,13,14,25 - CS

GPIO UART

• GPIO 16 - RX
• GPIO 17 - TX

GPIO MCP23017 (I2C)

• GPIO 21 - SDA
• GPIO 22 - SCL
• GPIO 26 - INT Port A
• GPIO 27 - INT Port B

GPIO Encoder

• GPIO 32 - 1 Switch
• GPIO 33 - 1 A
• GPIO 34 - 1 B
• GPIO 35 - 2 Switch
• GPIO 36 - 2 A
• GPIO 39 - 2 B