Hi Guys, I was originally inspired by Enifs post about a DIY OLED controller working off I2C. I have an Ender3 running off a MKS GEN L motherboard with the TFT32 touch screen interface but i liked the original controller and wanted to bring it back but as a much smaller OLED version. Enifs post was almost perfect, i dont want the SD card reader or a beeper, just the encoder and a screen but the issue is that there are no I2C pin headers on the GEN L so i needed to find another solution. MKS offer an OLED controller but it has an SD card reader, is a little more bulky than i had wanted and i was having issues finding where to buy it from so i started looking in to this as a DIY build project. [attachment 112384 Controller.jpg] Parts list. [www.ebay.co.uk] [attachment 112378 encoder.JPG] [www.amazon.co.uk] [attachment 112379 OLED.JPG] Printed enclosure. [attachment 112380 enclosure.JPG] 6 M3 bolts 6 M3 threaded inserts 10 pin EXT1 cable Assemble the wiring loom as follows. [attachment 112383 Wiring.jpg] NOTE: My encoder had 3 resistors soldered on to the rear, bridging between the CLK pin and the rotation direction pins. I removed the top and bottom one to resolve the unusual encoder behaviour. Perhaps there is a better encoder to use out there but i wanted one pre-mounted to a board and i got it working without too much issue. MARLIN. *configuration.h Define MKS_12864OLED as your controller *Pins_RAMPS.h (may vary for your board) -------------------------------------------------------------------------------------------------------- #if ENABLED(MKS_12864OLED) || ENABLED(MKS_12864OLED_SSD1306) #define LCD_PINS_DC 25 // Set as output on init #define LCD_PINS_RS 27 // Pull low for 1s to init // DOGM SPI LCD Support #define DOGLCD_CS 16 #define DOGLCD_MOSI 17 #define DOGLCD_SCK 23 #define DOGLCD_A0 LCD_PINS_DC #else #define LCD_PINS_RS 16 #define LCD_PINS_ENABLE 17 #define LCD_PINS_D4 23 #define LCD_PINS_D5 25 #define LCD_PINS_D6 27 #endif #define LCD_PINS_D7 29 CHANGE TO 33 -------------------------------------------------------------------------------------------------------- #if ENABLED(REPRAP_DISCOUNT_SMART_CONTROLLER) #define BEEPER_PIN 37 CHANGE TO 31 #if ENABLED(CR10_STOCKDISPLAY) #define BTN_EN1 17 #define BTN_EN2 23 #else #define BTN_EN1 31 CHANGE TO 37 #define BTN_EN2 33 CHANGE TO 29 #endif #define BTN_ENC 35 #define SD_DETECT_PIN 49 #define KILL_PIN 41 https://reprap.org/forum/read.php?13,857571,857571#msg-857571 Sat, 18 Apr 2026 13:17:37 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?13,857571,881461#msg-881461 https://reprap.org/forum/read.php?13,857571,881461#msg-881461
Thank you for the inspiration.]]> properlypurple Controllers Fri, 12 Feb 2021 02:45:17 -0500 https://reprap.org/forum/read.php?13,857571,858049#msg-858049 https://reprap.org/forum/read.php?13,857571,858049#msg-858049
DLC]]> dlc60 Controllers Wed, 14 Aug 2019 18:49:18 -0400 https://reprap.org/forum/read.php?13,857571,857745#msg-857745 https://reprap.org/forum/read.php?13,857571,857745#msg-857745 JayWms Controllers Wed, 07 Aug 2019 15:51:10 -0400 https://reprap.org/forum/read.php?13,857571,857571#msg-857571 https://reprap.org/forum/read.php?13,857571,857571#msg-857571
I was originally inspired by Enifs post about a DIY OLED controller working off I2C.

I have an Ender3 running off a MKS GEN L motherboard with the TFT32 touch screen interface but i liked the original controller and wanted to bring it back but as a much smaller OLED version. Enifs post was almost perfect, i dont want the SD card reader or a beeper, just the encoder and a screen but the issue is that there are no I2C pin headers on the GEN L so i needed to find another solution.
MKS offer an OLED controller but it has an SD card reader, is a little more bulky than i had wanted and i was having issues finding where to buy it from so i started looking in to this as a DIY build project.

[attachment 112384 Controller.jpg]

Parts list.
[www.ebay.co.uk]
[attachment 112378 encoder.JPG]
[www.amazon.co.uk]
[attachment 112379 OLED.JPG]
Printed enclosure.
[attachment 112380 enclosure.JPG]
6 M3 bolts
6 M3 threaded inserts
10 pin EXT1 cable

Assemble the wiring loom as follows.
[attachment 112383 Wiring.jpg]
NOTE:
My encoder had 3 resistors soldered on to the rear, bridging between the CLK pin and the rotation direction pins. I removed the top and bottom one to resolve the unusual encoder behaviour.
Perhaps there is a better encoder to use out there but i wanted one pre-mounted to a board and i got it working without too much issue.

MARLIN.
*configuration.h
Define MKS_12864OLED as your controller

*Pins_RAMPS.h (may vary for your board)
--------------------------------------------------------------------------------------------------------
#if ENABLED(MKS_12864OLED) || ENABLED(MKS_12864OLED_SSD1306)
#define LCD_PINS_DC 25 // Set as output on init
#define LCD_PINS_RS 27 // Pull low for 1s to init
// DOGM SPI LCD Support
#define DOGLCD_CS 16
#define DOGLCD_MOSI 17
#define DOGLCD_SCK 23
#define DOGLCD_A0 LCD_PINS_DC
#else
#define LCD_PINS_RS 16
#define LCD_PINS_ENABLE 17
#define LCD_PINS_D4 23
#define LCD_PINS_D5 25
#define LCD_PINS_D6 27
#endif

#define LCD_PINS_D7 29 CHANGE TO 33
--------------------------------------------------------------------------------------------------------
#if ENABLED(REPRAP_DISCOUNT_SMART_CONTROLLER)

#define BEEPER_PIN 37 CHANGE TO 31

#if ENABLED(CR10_STOCKDISPLAY)
#define BTN_EN1 17
#define BTN_EN2 23
#else
#define BTN_EN1 31 CHANGE TO 37
#define BTN_EN2 33 CHANGE TO 29
#endif

#define BTN_ENC 35
#define SD_DETECT_PIN 49
#define KILL_PIN 41]]> Blackplasma Controllers Sun, 04 Aug 2019 12:56:09 -0400