tangara-hw/notes-from-r3.txt
2023-04-24 11:02:49 +10:00

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io expander mpn and footprint disagree (warning: mouser product images are reversed)
should SEL be tied to samd?
sd card holder needs to be inset
trs esd protection footprint is wrong
should esp en be a pulldown? then it's off unless the samd turns it on
do we need inrush current limiting after the 3v3 reg?
bump up sd card cp to 47uF, add ferrite after sd mosfet. something like:
- TDK NLCV32T-1R0M-PF
- EMTEK LCD0805-R82K-T