You'll definitely need those resistors (I2C pull-ups, RESET, REXT), so see if you can get them soldered in somehow.
And looking at the schematic, it seems you are using 5v+ for some of the devices, including the...
A couple of things to look at:
According the datasheet, you'll need a pull-up resistor on the /RESET pin. Make sure you have that connected before you power it up.
And you'll need REXT connected to a resistor to...
Sorry, I don't have any experience laying out this part, but it looks like there might be room right next to the 19/20 pins there!
It does look like you'll need the diodes, to ensure that there is power to the VBAT...
Just noticed one more (tiny) thing. There is solder mask between the pads on the jumpers. Was this intended? This might make it hard to cut the trace and/or jump the pins.
NICE!
I see that you have a note that says "RTC Not Yet Implemented".
That would be my only suggestion left!
(Could be like the T3.2 with an optional through-hole footprint. Also, the VBAT pin would...
Terrific!
I'm sure you're thinking about these, but I noticed:
- Why not hook up the BATT_VIN/3 pin to one of the free analog input pins?
- G8 appears to not be connected to anything and doesn't have an X...
Adafruit has ported the awesome Audio library to some of their boards. See: https://learn.adafruit.com/synthesizer-design-tool/audio-library-examples-on-trellis and https://github.com/adafruit/Audio
Terrific! Couple of thoughts/questions:
- Have you thought about mixing this with Adafruit_GFX hierarchy to provide compatibility with that API? Not sure where the actual primitives would come from, I assume that...
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