Raspberry Pico ZX Spectrum Microdrive Hardware Emulator (https://en.wikipedia.org/wiki/ZX_Microdrive)
Hardware emulation of 8 microdrives for the ZX Spectrum only (no plans to adapt for the QL, if you want a Microdrive emulator for the QL see http://oqtadrive.org/). Main features are:
Supports all 8 Microdrives from one device
Supports downstream real h/w Microdrives (if you have a v1.1 PCB you need a small hardware mod)
OLED screen with buttons to navigate the menu - includes load, save & format cartridges as well as other options (see menu section). No additional toolkits, software or connections needed as all managed from the menu
FAT32 & exFAT supported Micro SD cards up to a theoretical 256TB (I've tested 2GB, 4GB and a lowly 64GB which can easily fit every Spectrum game and program ever made multiple times)
Reset button just in case (also makes it easier to flash the Pico)
Buzzer in case you like a buzzing sound to "simulate" the drive motor
Includes a version of my Z80onMDR tool (https://github.com/TomDDG/Z80onMDR_lite) to make it easy to load Z80 & SNA snapshots on the fly. Very useful as not many actual Microdrives cartridges released commercially.
Can copy the contents of a TAP to a blank Virtual Microdrive Cartridge (see TAP copy section for details)
Cartridge defragmentation option which can significantly speed up loading times for unoptimised cartridges
Fully powered from the Spectrum & boots instantly
Unfortunately you do still need an IF1 (https://en.wikipedia.org/wiki/ZX_Interface_1) and ribbon cable to connect