Chronio DIY Watch

 writes on Hackaday:

Chronio DIY Watch: Slick and Low Power

[Max K] has been testing the battery life of his self-designed watch under real-world conditions. Six months later, the nominally 3 V, 160 mAh CR2025 cell is reading 2.85 V, so the end is near, but that’s quite a feat for a home-engineered smart watch

Chronio DIY Watch

Dogbone VFD Wristwatch

Callum Nunes-Vaz repurposed an old soviet vacuum fluorescent display (VFD) for use in a wristwatch:

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Dogbone VFD Wristwatch

The VFD display (IVL2-7/5) is a piece of soviet new-old-stock (NOS), and has a unique look to it. Making a watch out of it is a logical progression for anyone wants to give portability to the mesmerising glow of the display.

Callum shared the board on OSH Park:

IVL2-7/5 VFD Wristwatch (Prototype)

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Order from OSH Park

Here’s a video of the display in action:

 

 

Dogbone VFD Wristwatch

Hackaday Prize Entry: A Charlieplexed Wristwatch

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Hackaday Prize Entry: A Charlieplexed Wristwatch

If there’s one thing we like, it’s blinky stuff, and you’re not going to get anything cooler than a display made of tiny SMD LEDs. That’s the idea behind this wristwatch and Hackaday Prize entry. It’s a tiny board, loaded up with an ATmega, a few buttons, and a bunch of LEDs in a big charlieplexed array.

Hackaday Prize Entry: A Charlieplexed Wristwatch

Chronio: Arduino-based, low-power smartwatch

Max.K designed this low-power,  Arduino-based smartwatch:

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Chronio

Arduino-based 3D-printed Watch. By not including fancy Wifi and BLE connectivity, it gets several months of run time out of a 160mAh button cell. The display is an always-on 96×96 pixel Sharp Memory LCD.

Hardware

  • Microcontroller: Atmega328p with Arduino bootloader
  • Real Time Clock: Maxim DS3231 (<2min per year deviation)
  • Display: 96×96 pixel Sharp Memory LCD (LS013B4DN04)
  • Battery: CR2025 160mAh coin cell

 

Chronio: Arduino-based, low-power smartwatch