Tiny13 Firefles

• the LEDs flicker randomly imitating fireflies
• 6 LEDs on 3 pins(PB0-PB2) using charlieplexing and bit angle modulation(more efficient PWM alternative for leds) for dimming
• BAM implemented with hardware timer in CTC mode
• could easily be scaled to 20 LEDs with almost no code changes(rewriting charlieplexing bitmasks)
• randomness implemented with linear congruential generator with seed persisted in eeprom and incremented on each power on
• 0.25 mA power consumption on a 3V CR2032

TODO

• watchdog for even deeper sleep during dim phase
• button for toggling power(manual deep sleep)

Example videos