Retro Watch with Bubble Display

oshparkoshpark wrote 06/22/2016 at 23:33 • 1 min read • Like

16 - 1 (3)Rafael Riber created a retro watch with HP QDSP-6064 Bubble display like 1970’s HP calculators:

The display is controlled by an Atmel ATMega328P-AU MCU with Arduino code, and the time is kept by a Maxim DS3231 Real-Time Clock module, that stays connected to the LiPo battery at all times, keeping time even when the microcontroller and display are not powered.

RafaelRiber shared the board on OSH Park:



Order from OSH Park



warhawk-avg wrote 08/03/2016 at 08:23 point

Way cool!
on Rev 2 make components 0805 for us hand soldering folks, also maybe either a blank back plate to sandwitch the battery between, and/or a small Li Ion button cell w/ charging circuit TP4056 or something, and micro USB port for charging
Still an awesome design!

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oshpark wrote 08/03/2016 at 15:48 point

awesome to see @Rafael Riber continuing to improve the design!

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