[Arm-netbook] [flying squirrel] TODO list

[luke.leighton]

well.... uh... it looks like i totally cocked up the ADC side of the
flying squirrel circuit for the microphone!  i must have been on drugs
or something (someone slipped something into my hot water with a bit
of milk).  the connections i made to the LM13700 OTA bear absolutely
no relation to the example schematics!

luckily i did manage to connect +ve and -ve to the right pins, meaning
that the 3 LM13700s i now have are absolutely fine, so i've spent the
day putting resistors on one of them like a porcupine, experimenting.

what's really awesome about the LM13700 is that it has a fascinating
history of its own: http://www.idea2ic.com/LM13600/LM13700.html being
an independent-buffered dual-version of an incredibly famous OTA - the
CA3080 - which was first sold in *1969*
http://www.till.com/blog/archives/2005/06/last_of_the_ota.html

i'm reminded of when i put the flying squirrel schematics in front of
a chinese ODM for them to quote helping get it made, they said "that's
a really old school design".  i had no idea :)

anyway, i'm presently flipping quills on an LM13700 porcupine and also
i'll errr... this time be actually... like... connecting the ADC VREF
pins on the STM32F so that... y'know... the ADC actually works?

honestly... :)

l.