What makes this solution so interesting is the level of emulation you can reach: it’s really perfect and you can load whatever software for Commodore 64/128/Vic20/16/Plus4 as the real floppy drive.

The unit i'm selling it's assembled, tested, with both IEC connectors installed, piezo buzzer and oled display. The hex inverter is original, not a fake one. It's complete with a 6-pin serial cable to connect to a C64

To use this thing you need:
- Raspberry Pi 3B with 2.5A power adapter
- MicroSD-card

You can  read about his project, download the software for the sd-card and understand how it works on
https://cbm-pi1541.firebaseapp.com/

These are the options to set in the file options.txt for this hardware configuration:
// If you are using the split line hardware option (ie Option B) then you need to specify this option
splitIECLines = 1

// If you are using a LCD screen then specify it here
LCDName = ssd1306_128x64

// If you are using I2C LCD you can optionally change what pins it is connected to.
// (defaults to 0 for non-split lines (Option A) or 1 for split lines (Option B))
i2cBusMaster = 0 //SDA - pin 27 SCL - pin 28
i2cLcdAddress = 60    // I2C display address in decimal and shifted. 60 == 0x78, 61 == 0x7A
i2cLcdFlip = 1 // Rotate i2c LCD screen 180 degrees
i2cLcdOnContrast = 127 // Allows you to adjust the contrast on your i2c LCD screen

// If you have hardware with a piezo buzzer (the type without a generator) then you can use this option to hear the head step
SoundOnGPIO = 1
SoundOnGPIODuration = 1000 // Length of buzz in micro seconds
SoundOnGPIOFreq = 1200 // Frequency of buzz in Hz