Connecting a 12864 screen to a Fly-E3-Pro

Overview

The information here is aimed at connecting a stock ender 3 12864 display but it can also be applied to other 12864 displays (as long as they are ST7567 or ST7920 based).

Wiring

The ender 3 stock display can be connected directly to the EXP header of the Fly-E3-Pro. No modifications are required.

Board.txt modifications

The following lines should be added to the board.txt file.

lcd.encoderPinA=E.9
lcd.encoderPinB=E.10
lcd.encoderPinSw=E.11
lcd.lcdCSPin=E.7
lcd.spiChannel=4
SPI4.pins={E.8, NoPin, B.1}
lcd.lcdBeepPin = E.12

Config.g changes

Add the following line to the end of your config.g

M918 P1 E4 F100000

Wiring

The RepRapDiscount Full Graphic Smart Controller can be connected directly to the EXP header of the Fly-E3-Pro using custom wiring.
Use the image below as a guide. Thanks @Samsan

Reprap Discount to Fly-E3-Pro
Connecting a RepRapDiscount Full Graphic Smart Controller to the Fly-E3-Pro

Board.txt modifications

The following lines should be added to the board.txt file.

lcd.encoderPinA=E.9
lcd.encoderPinB=E.10
lcd.encoderPinSw=E.11
lcd.lcdCSPin=E.7
lcd.spiChannel=4
SPI4.pins={E.8, NoPin, B.1}
lcd.lcdBeepPin = E.12

Config.g changes

Add the following line to the end of your config.g

M918 P1 E4 F100000

Wiring

The Fysetc Mini12864 RGB Panel v2.1 can be connected directly to the EXP header of the Fly-E3-Pro using custom wiring.
Use the image below as a guide. Thanks @Denise_Wink

Fysetc Mini12864 RGB Panel v2.1 to Fly-E3-Pro
Connecting a Fysetc Mini12864 RGB Panel v2.1 to the Fly-E3-Pro
Pin Number E3 Pro Pin Location TFT Pin Location
lcd.encoderPinA=E.9 EXP1 Pin 5 EXP2 Pin 8 EN1
lcd.encoderPinB=E.10 EXP1 Pin 3 EXP2 Pin 6 EN2
lcd.encoderPinSw=E.11 EXP1 Pin 2 EXP1 Pin 9 ENC
lcd.lcdCSPin=E.7 EXP1 Pin 7 EXP1 Pin 8 LCD_CS
SPI4.pins={E.8, NoPin, B.1} EXP1 Pin 6, , EXP1 Pin 8 EXP2 Pin 9 SCK, , EXP2 Pin 5 MOSI
lcd.lcdDCPin =E.12 EXP1 Pin 1 EXP1 Pin 7 LCD_A0
led.neopixelPin=B.11 Neopixel Pin B.11 EXP1 Pin 5 RED
Ground EXP1 Pin GND (9) EXP1 Pin 2 GND
+5v EXP1 Pin 5V (10) EXP1 Pin 1 VCC +5V
LCD Reset SWCLK on STLink Pin A.14 EXP1 Pin 6 LCD RST

Board.txt modifications

The following lines should be added to the board.txt file.

lcd.encoderPinA=E.9
lcd.encoderPinB=E.10
lcd.encoderPinSw=E.11
lcd.lcdCSPin=E.7
SPI4.pins={E.8, E.NoPin, B.1}
lcd.spiChannel=4
lcd.lcdDCPin = E.12
led.neopixelPin=B.11

Config.g changes

Add the following line to the end of your config.g

M98 P"screen.g"

Add a file in your sys folder called screen.g and add the following contents

; ST7567 Init for FYSETC Mini12864 Panel V2.1
; Turn off backlight
m150 X2 R0 U0 B0 S3 F0
; Configure reset pin
M950 P1 C"PA.14"
; hardware reset of LCD
M42 P1 S0
G4 P500
M42 P1 S1
; Turn display on
M918 P2 C30 F1000000 E4
; Fade in backlight
while iterations < 256
 m150 X2 R255 U255 B255 P{iterations} S1 F0
 G4 P20
; flash Button 3 times
while iterations < 3
 m150 X2 R255 U255 B255 P255 S1 F1
 m150 X2 R0 U255 B0 P255 S2 F0
 G4 P250
 m150 X2 R255 U255 B255 P255 S1 F1
 m150 X2 R0 U255 B0 P0 S2 F0
 G4 P250
; Display "ready" button state
m150 X2 R255 U255 B255 P255 S1 F1
m150 X2 R255 U0 B0 P255 S2 F0

Menu files must be uploaded to allow the display to generate the correct information. This can be done in two ways. First, obtain the recommended menu files from here

Method 1

Extract the contents of the zip file you downloaded above and place them in a folder called “menu” on the SD card of the Fly-E3.

Method 2

Activate the display using the config.g changes above.
A side menu called “Display” should appear in DWC. Navigate to it and upload the zip file.

Troubleshooting

If the screen is showing artifacts/random characters on the screen, the following may improve/eliminate the issue

  • Lower the SPI frequency by half. This is the F value in M918.
  • Reduce the length of the cable between the screen and the board.
  • Ensure that the cable between the screen and the board is routed away from other cables, especially motor cables.
  • Add a ferrite ring to the cable between the screen and the board.
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