Working on the snes, I designed some custom models of sanni card reader, this one is complete , he have a snes slot + clockgen + cic unlock pic12f , voltage switch 3.3v/5v , and an extension slot for my custom extensions ( with 2.54mm header pin )

really compact and look like to a dumper , use the latest sanni v 14.3 firmware

the sd card is not include , you need one and put the files from sanni card reader github on it.

the atmega2560 board used is the newest smaller one used in sanni card reader v5 ; this design is a modified sanni card reader v3 with this small board, she is amovible if remove the wires for voltage switching

the screen is amovible too , 4 swcrews put it in place , easy to change it if you broke it.

the second picture is for show you at what it look with an extension connected ( gb/gba/megadrive/n64 ) , the assembled extension is not include.

i give with the sanni 2 nudes extensions boards pcb ( 3th picture ) you need buy the slots and assemble yourself id you need them them yourself

it have one extension pcb for gb/gba/megadrive/n64 and another one for master system nes and famicom

sanni card reader github