Supercapacitor powered arduino LED wrist watch #WearableWednesday
Thanks to Peter for ending in this supercapicitor watch project! Read more here.
Super capacitors are new power source, compared to batteries need different charging and power usage. This watch using 6 capacitors because they have better dimensions. Board have high effective step up converter with operation to 0.3V, because caps are are charged to 2.5V and then are discharged to zero.
About super cap power…
5F is about 10 minutes in highest brightness, 20 minutes in lowest brightness.
In standby few days.
day of week automatically calculated
day in year
week in year
max. days in actual month
now without RTC in timer2 in async mode
RTTTL melody player with nice PWM tones with envelope
Alarm 1, configurable time, date, days in week
Alarm 2, configurable minute, hourly beep or time talk
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