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
Eink, E-paper, Think Ink – Collin shares six segments pondering the unusual low-power display technology that somehow still seems a bit sci-fi – http://adafruit.com/thinkink
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.