small board review (Andrew Fearing )
happened
Andrew Fearing designed McCoy v1.1 based on feedback
pins for all GPIOs 0-15
antenna pins removed, as well as extra resistors
2 layers
antenna: current same .1 inch through hole?
discussion about which to use battery
additional remarks
Austin Patel GPIO1 can output optical data, GPIO8/GPIO9 is active light/low, we want to be able to short GPIO1+GPIO8, ten GPIO1+GPIO9 to be able to do lighthouse.
we could drop of the GND pins and rewire two extra GPIO1 signals to pins
moving the pins from J5 into J4 (GPO_ZERO)
make sure pins on J4 are enough to connect to an nRF52840
BigBoard review (Joshua Alexander )
Teensy pins plus GPIO pins
22 pin header, aligned to the Teensy pinout
discussion about how both Teensy and nRF52840-DK can be used, using the same ribbon cable, to program both the McCoy and big board
J10 is used for current consumption
suggestions
suggestion to group pins into a small number of pins
have ADC in close to the development region
Need to consider drive voltage on IMU: expects 1.8v but Teensy runs at 3.3v
General board development considerations
QFN package to avoid wirebonding headaches
QFN mounting may have had contact issues in the past; email chain started
Planning to manufacture current boards with SMT assembly first, wirebonding second. Waiting on responses from QuikPak to confirm.