Overview
The information here is aimed at connecting a Fysetc Mini v1.2 12864 display but it can also be applied to other 12864 displays (as long as they are ST7567 or ST7920 based).
Wiring
Connect the screen as shown below.
Board.txt modifications
Add the following lines to the board.txt file
//Fysetc MINI 12864
lcd.encoderPinA=PG_11
lcd.encoderPinB=PC_4
lcd.encoderPinSw=PF_9
lcd.lcdCSPin=PD_3
lcd.lcdDCPin=PG_13
lcd.spiChannel=3
SPI3.pins={ PG_14, PC_1, PF_7 } //Set to GPIO pins to use as SCK, MISO, MOSI
//lcd.lcdBeepPin=NoPin
Config.g
Add this line to config.g
M950 P1 C"PC_5"
M42 P1 S0
G4 P500
M42 P1 S1
M918 P2 C30 F1000000 E4
Menu Files
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 - WiFi Mode only
Extract the contents of the zip file you downloaded above and place them in a folder called “Menu” on the SD card of the .
Method 2
Activate the display using the config.g changes above.
On the “System” tab, above the list of files, is a dropdown menu that defaults to “System Directory”. Select this and change it to “Menu Directory”.
Then upload the menu 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.