The DyIO hardware is basically a dead project now, but the firmware from the DyIO lives on! I have re-tooled the firmware to be an Arduino library (for chips with >4k ram). If you search for BowlerCom in the Arduino library manager, you should see it there (no special download/install necessary). Once you added the library, you can run the DyIOLargeChip example on your Teensy 3.2 (my current fave hardware) and it will boot up as a DyIO. All code that used to talk to DyIO's now can talk to a Teensy 3.2 with the DyIO firmware!