I found on Android Store a nice application for my favorite PSK 31 Digimode, "PSK Droid".
Altough, it works very nice when using the phone's mic, I wanted to have also transmitting capabilities just with a Android phone.
So, i made (another) digimodes interface, with just a few components.
Look at the pictures and i will put here the schematics, later.
Of course, no battery is required for operation.
I intend to make some mods...

