fix: level in levelshifter too low on high frequen...
by Andreas Kurz 1 month 3 weeks
fix: level in levelshifter too low on high frequencies

The pull-up resistor to 5V was too big causing the levels not raising
high enough to provide a good signal for the WS2812 RGB LEDs. This is
fixed by choosing a smaller resistor and removing the current limiter
from the microcontroller to the source of the levelshifter's MOSFET.

Signed-off-by: Andreas Kurz <info@akurz.net>
feat: add license to repo
by Andreas Kurz 1 month 3 weeks
feat: add license to repo

Signed-off-by: Andreas Kurz <info@akurz.net>
chore: rename to coffeecaller
by Andreas Kurz 1 month 3 weeks
chore: increase LED resistor to 5k1
by Andreas Kurz 1 month 3 weeks
chore: increase LED resistor to 5k1

The power and normal GPIO driven LEDs are quite bright. So the resistor
is increased to 5k1 as this type is already in use on the board.
fix: use correct pinning for LDO
by Andreas Kurz 1 month 4 weeks
fix: use correct pinning for LDO

The LDO was incorrectly in the Database so that Vin and Vout switched
positions. This leads to incorrect functioning of the LDO - basically as
a diode dropping the voltage by 0,7 V
chore: use cheaper USB-C connector
by Andreas Kurz 3 months 2 weeks
chore: change ferrite beads to basic components
by Andreas Kurz 3 months 3 weeks
feat: add reset button
by Andreas Kurz 3 months 3 weeks
feat: add reset button

reroute LEDs and change R to 820 with 0603
chore: add netfiltering for GND on USB
by Andreas Kurz 3 months 3 weeks
feat: use basic LDO and reroute 3V3
by Andreas Kurz 4 months 2 days
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