TFE is a floppy emulator based on an ATMega32 which reads the disk data from an SD/MMC card. It is similar to other like the HxC floppy emulator, but because of it’s simplicity it is easier to build (only single-sided PCB and standard components are used). Of course, the Amstrad CPC disks are supported, too :). However, currently it isn’t possible to write data into the loaded DSK images. Have a look at the project at Retromasters Electronic Projects. Currently the plans are not available, let’s hope that there will be a full release soon.