M8Q time calibration
ws2812 underlight
tempture sensor
8 tubes, in-14
MM DD HH mm
HH mm SS temp
3D printing?
guardian theme?
bluetooth
eeprom
light senser
stm32f042K 14 PWM channels!
SPI 3MHz MAX, 16 byte command
USB C connector
disable boot0 in option byte SWD cross talk in jumper wire
rg 470ohm b 0ohm
htim14.Instance->CCR1 = pwm_value; pwm_value must be smaller than counter period
3528 rgb led
48MHz sysclock Prescaler 1920 period 127 194Hz
0 0xab 1 red 2 green 3 blue 4 0 5 1 6 2 7 3 8 4 9 5 10 6 11 7 12 8 13 9 14 left dot 15 right dot
up to 20MHZ
Thanks to this diode, when an EMC stress oc curs, the level of the noise is clamped to V DD . As a consequence, channels implemented on FT I/O show a better noise immunity
ref-packages
find smt 8MHz and 32.768KHz crystals
remove tx rx header put backing transistors there
remove eeprom put pf0 pf1 tx rx on test points
change drc will change pad size
eixie reset after a short delay when invalid header gps fix led
polygon rank higher will isolate lower
use driven shield, no ground or signal underneath
test reversed tx rx
test rtos
looks like reset is needed for correct SPI snyc
current state, 16 bytes, new state, 16 bytes compare difference between the two, then do fade animation