-check that transistor BEC is correctly set up 
(with corresponding jlc page open)

https://jlcpcb.com/partdetail/21237-MMBT3904/C20526

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replacing the lm4040 with 78L08(?) 

resistor calculations for this, will this work

NO RESISTORS 
X 

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which LED to use? driving LEDs direct from GPIO

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using RGB LEDs (old school kind) 
And how to wire them into circuit

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overall questions: 
organizing JLC parts pre buying?
keeping them in some sort of profile? 

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can I trust the little one line description on the JLC description? 
how do I know exactly what I'm getting IE LED vals etc

how do I make sure that its flashable? ie that it works with usb? 
rpi pico has a button that makes it into mass storage - how does it work with real devices?

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numbering components correctly in kicad 


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