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v0.2.0 — first stable firmware for the v0.2 board

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@owahltinez owahltinez released this 06 Jun 04:48
· 43 commits to main since this release
v0.2.0
4ac1c77

First stable firmware for the v0.2 coaster board.

  • Fixes the reset-relight loop on worn batteries (BOD at 1.8V + crash cookie in .noinit SRAM)
  • Breathing glow effect with perceptually-corrected fade-out
  • PWM-capped LED current for longer battery life (~13 µAh per show, ~6 years standby)

Flashing (USBasp): make fuses && make install, or with just avrdude using the attached hex:

avrdude -c usbasp -p attiny13a -B 32kHz -U hfuse:w:0xfd:m -V -U flash:w:main.hex
avrdude -c usbasp -p attiny13a -B 16kHz -U flash:v:main.hex

Required fuses: lfuse=0x6A (factory default), hfuse=0xFD (BOD at 1.8V — required, see README).

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