Unlike the v0.7, the mainboard v0.8 is a double layer PCB.
Be aware that there are 2 silkscreen errors on it:
- The BC547 transistor must be welded reversed (EBC -> CBE).
- The ATTINY4314 is a 4313 instead.
There are some new components on it:
-
The ATtiny4313 together with the 16 MHz crystal are used for the USB MIDI output.
-
The IC7 SN74HC595 is used to have more LCD controls.
-
The IC8 TL780-05 voltage regulator.
There is a Teensy 3.1/3.2 support but it was not tested.