fix SPI vs I2C conflict, adjust copper, get board DRC clean
change I2C pullups to 2.49k, saves a resistor value
increase battery voltage divider values by a decade too
decade-higher values in comparator dividers, ala EasyMini
Add USB pull-up on PA8 The STM31F103 doesn't have any built-in USB pull up mechanism, so we need to burn a GPIO. Use PA8 as that was reasonably close on the board and available. Signed-off-by: Keith Packard <keithp@keithp.com>
schematic presumed complete, work in progress on layout
move to TLV73333 LDO
drop sensor interrupt lines, switch mag sensor to i2c
declare new version, update copyright yet, etc etc
switch to Taiwan Semi FETs
rationalize screw strip part value in pref parts
Switch pyro series resistors to 1k This limits the current through the comparator to 3.3mA when it fires to make sure the gate voltage on the FET is low enough. The SI LM293 comparators are rated at 4mA current, unlike the TI parts which are rated at 6mA, hence the move from 549 to 1k. Signed-off-by: Keith Packard <keithp@keithp.com>
fix case of MHz suffix on crystal attribute
eliminate attributes in schematic that pref parts will provide
use explicit suffix on STM part number for preferred_parts
move to new 4ucon micro USB connector with through-hole tabs
remove useless boot0 netname so GND netname remains intact
lose the 10k pull-down on boot0
move to smaller 16 Mhz crystal used in TeleMini to improve connector placement
re-assign spi ports