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Tilt Touch Time

A tilt and touch activated wristwatch using a "retro" style bubble 7 segment display.

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This project was created on 06/02/2014 and last updated 10 hours ago.

As with many projects this one started with me finding a cool component that i wanted to use, in this case a retro style bubble 7 segment display. Being somewhat of a watch enthusiast I decided to design yet another wristwatch.

Drawing from the experience gained from my last watch project ("A watch") I decided to use the same kind of tilt switch to activate the display but also adding a capacitive touch button which will enable me to hopefully add more functions such as a stopwatch and an easy way to set time. Another upgrade from the old design will be the new display making it much easier to tell time at a glance.

Since one of the requirement for the Hackaday contest is that the device is “connected” I am trying to figure out a way to sync the watches time to a PC/smartphone with the help of a photodiode an an optical flashing screen system.

More info will be available as the project develops

The source code, schematics, PCB files and 3D cad files for the case will all be released under anopen source license as soon as the are done. 

Entry Video: 

System overview:

Project logs
  • Summer has come in the way

    3 days ago • 0 comments

    The project has been on hold for the last couple off week because off: Summer. The weather has been to good to bee sitting inside hacking on the project. But with the dead line coming up I better get started again.

    I have soldered together the prototype PCB and gotten the display and tilt sensor working with out any problems, the touch sensor is still acting up and needs some more TLC before it is ready for prime time. I also realized that syncing the time to the PC with help of the touch sensor probably isn’t a good idea, so I will be changing over to an optical system. I have one GPIO left on the avr where I will add a photodiode/transistor. The photodiode will be held against the computer screen where a Python script will send the current time by flashing the screen. This way of communication also has the advantage of also working with smartphones and tables.

  • Solder Time

    2 months ago • 0 comments

    The PCBs and components have arrived time to heat up the soldering iron!

  • Designing the case

    2 months ago • 0 comments

    I'm still waiting for the PCB to arrive so in the mean time I have started designing the case for the watch. I started off using openSCAD as my 3D CAD software since I have used it before and it is open source. But after a while I got frustrated with having to descried the design in code and started using Designspark Mechanical instead, a great free (but not open source) piece of software. 

     Watch Case V1

View all 4 project logs


Adam Fabio wrote 2 months ago null point

Great watch project! I love those bubble LEDs. Careful on the long term stability with those ATtinys - they can drift a bit. Don't forget to link in your code and schematics - being more open goes a long way.

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