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I2C LCD Screen Add-on

Last modified: 30 April 2023

HxC Gotek with a 2x16 LCD screen on Amiga

You can connect an I2C 16x2 characters LCD screen to the Gotek display port.

2x16 I2C LCD screen Gotek HxC wiring scheme

These kind of I2C LCD board is compatible with the firmware :

Any I2C address is supported : The firmware scan automatically the I2C bus at power up (0x20-0x27 and 0x38-0x3F address range scanned) So there is no specific requirement about the I2C address setting.

To connect the I2C LCD, you have to connect SDA & SCL at the J7 connector (see below). Please note that 2 additional 4.7Kohms pull up resistors (+5V) are needed on SCL & SDA. the +5V and GND wire can be connected on the programming connector (see below) :

If you want to build the I2C board yourself, here is the schematic: https://hxc2001.com/download/floppy_drive_emulator/Ext_Slim_HxC_Floppy_Emulator_I2C_LCD_Schematic.pdf

  • Possible +5V source on the PCB (on the programming connector):

-+--- NC
-+--- GND      O J3 (BOOT0)
-+--- GND      O VCC3V3
-+--- +5V     OO TX
 |        +5V OO RX
 |        GND OO RST
 |  |
 |  |
  • SCL & SDA position on J7 :

                          |     |
                          | USB |

Last modified: 30 April 2023

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