Close

Does this project spark your interest?

Become a member to follow this project and don't miss any updates

WΛLLTΞCH OLED BTLE Smart Watch v6.1

A BT 4.0 fitness-tracking smart watch for Android+iOS with a 1.5" color OLED display, SD card, NFC, wireless charging, and precision IMU

Similar projects worth following

This project was created on 06/04/2014 and last updated 2 months ago.

Description
You may have seen any of the smart watches on the market today and thought, "that's way too expensive," or "I wish this feature was customizable," or "darn, I need an android phone for that." If so, look no further! Sporting a beautiful 1.5" full color OLED display with micro SD card slot, QI charging, NFC, altimeter, thermometer, compass, gyroscope, accelerometer, pedometer, and full Android/iOS bluetooth 4.0 low energy capability for receiving phone notifications, my Arduino compatible smart watch does it all. Ever wanted a smart watch that you could customize to the core? Use with Android and iOS? Build yourself? Trust is fully open source? My name is John Wall, I'm 16 years old, and from the experience I've gained building my previous generation OLED watch, I have set out on an engineering journey, determined to build my own smart watch, the best smart watch.

FEATURED BY:
MAKE MAGAZINE - http://wp.me/p22K2I-1KIc
-Atmel, ADAFRUIT, OSHPARK, TINDIE
Details

The majority of the project's info and progress will be detailed in the project logs below, check them out!

If you follow, don't forget to give a skull to show you liked it too!


Features


  • 1.5" 128x128 (121 PPI) Color OLED display
  • iOS/Android Compatibility
  • Full BTLE 4.0
  • Expandable SD card storage
  • Wireless QI charging
  • NFC
  • 10cm Accurate Altimeter
  • Barometer
  • Thermometer
  • Compass
  • Gyroscope
  • Accelerometer
  • Pedometer
  • Vibration Motor
  • 500mah Lithium Ion Rechargeable Battery
  • Arduino Compatible (Leonardo)
  • Open Source!

System Design



Semifinals Judging Criteria



  • PCB Gerbers
  • Case 3D Model

Components
  • 1 × IMUduinoBTLE The latest from Femtoduino, the IMUduinoBTLE uses an atmega32u4 from Atmel bootloaded as an Arduino Leonardo and a Nordic nRF8001 bluetooth 4.0 low energy chip and support components to connect to compliant devices and receive notifications for the watch. It’s tiny size and low power consumption make it perfect for use in this low power application. Now with an on board IMU, the IMUduinoBTLE has 10 DOF IMU incorporating a 10cm accurate barometer/altimeter, 6-axis digital compass, and 3-axis gyroscope/accelerometer, enabling complex motion and the precise altitude to be implemented by the user!
  • 1 × 1.5″ full color OLED display with onboard microSD card slot from Mike Rankin A step up from the monochrome .96″ OLED display of v4.2, this screen also consumes very little power thanks to the OLED technology behind it and can show beautiful images that will be the GUI for the smart watch. Now that there’s an sd card on board, I can use fancy graphics and make it look professional and keep the code to the microcontroller, enabling more to be coded instead of storing images too.
  • 1 × 3D Pedometer Module from Nicerf This tiny, tiny module will connect to the watch’s I2C lines as the DS1307 does, and counts steps using a tiny accelerometer and buffer memory. It’ll be used to add fitness tracking capability to the watch and in conjunction with the phone app, keep track of calories burned and activity levels! Oh, and did I say this thing was tiny?
  • 1 × Samsung NFC Tec Tile An advanced NFC tag that when placed under the OLED screen's glass, will allow users to scan the watch with their phones and automatically connect themselves to it via bluetooth, and open up a web page with documentation and source code!
  • 1 × QI Inductive Power Receiver Made for the Galaxy S5, this small card with an embedded coil receives up to 750ma at 5V from a QI compatible base station to charge the watch's lithium ion battery wirelessly.
  • 1 × DS1307 RTC A trusty real time clock, forms the backbone of the timekeeping functionality a watch is useful for.
  • 1 × MCP73831 Charge Controller Charges the battery and provides charge status information.
  • 1 × 500mAh Lithium Polymer Battery The battery that powers the watch. With how things are looking, an 18-24 hour battery life is to be expected.
  • 1 × Flickable Side-Mounted Selector Switch
  • 1 × Vibration Motor for feedback

Project logs
  • FINAL PROTOTYPE COMPLETE!

    2 months ago • 0 comments

    After all my hard work, soldering iron burns, panic moments, unforeseen delays, and small victories, my smart watch finally exists:

    With the case and new OLED display just in, I was able to remove the screen used for testing and permanently assemble the watch. Coming in at .5mm thinner than my previous generation OLED watch, it's much thinner than I anticipated, and the 3D printed case is almost perfect, although I'll order another top half of the case to tweak several spots to ensure a precise fit in the long run, but for the most part, it's complete! Once I'm completely happy with the case, I'll wire and adhere the QI wireless charging receiver to the bottom where a slot is inset for it and then I'll be able to just place it down on my charging base and it will begin charging wirelessly and by itself. Now I will continue work on the smart phone companion app, and when that is finished and working, I'll complete the operating system to use the communication standards I created in the app and add the fancy animations and features that will make this the coolest smart watch out there.

  • IMUduinoBTLE Kickstarter!

    2 months ago • 0 comments

    My buddy Alex from Femtoduino.com has just started a Kickstarter campaign for mass producing the IMUduinoBTLE microcontroller used in this smart watch! The starter pledge is a crazy good price, and most of the amazing sensors and features of my watch come from this incredible board including all the bluetooth low energy capability! It's essentially an Arduino Leonardo in the tiniest form factor physically possible, and I can trust Alex and his devices 100%. If you need a microcontroller that's incredibly small, but still easily incorporated into advanced projects with a host of sensors and wireless communication, check out the Kickstarter!

    IMUduinoBTLE

  • Smart Watch Almost Complete!

    3 months ago • 0 comments

    It's an exciting time for my smart watch project! My hardware is assembled and fully functional, test software is working and looking far slicker and more professional than I could have ever thought, and the companion app for android is almost complete. At the moment I'm waiting for the watch case to be 3d printed in polished black plastic from Sculpteo.com which should arrive next week, and with the bands that arrived today, if my caliper skills are up to par, I'll be able to case up the pcbs and focus on software! From my preliminary renderings and what the bands look like, this thing is going to look mean, and compete visually as well as in stats with other smart watches on the market today (which wasn't my goal at all with this project). Once my app is done, I'll make another post and make a video of it working, so I'll keep developing and get back to you in a few days!

View all 29 project logs

Discussions

Timmyzophrene wrote 25 days ago null point

Excellent work ! :)

Are you sure? [yes] / [no]

Caco wrote 3 months ago null point

This is amazing! Will the watch be water-resistant?

Are you sure? [yes] / [no]

Walltech wrote 3 months ago null point

Thank you! Strictly speaking, no, it isn't water resistant, but in its case
which seals it in leaving only the USB port and other slots open, a splash from
rain or washing your hands won't do much. The battery has short circuit
prevention, so if any water gets in, the power will be cut instantly and
restored when you connect the battery to a charger. I have conformal coating,
but certain things like the SD card slot, USB port, selector switch, power
switch, backup battery slot, and a few other things can't be coated as they have
contacts that need to be clean. All cased up, it'll be pretty resistant to
splashes and things like that, but on a whole, no, it isn't.

Are you sure? [yes] / [no]

Caco wrote 3 months ago null point

Sounds like a regular smartphone then :)

Are you sure? [yes] / [no]

Walltech wrote 3 months ago null point

Exactly, couldn't have put it better myself ;)

Are you sure? [yes] / [no]

Mark Jeronimus wrote 4 months ago null point

Oh another promising watch. I LOVE THIS TOO. I was searching for smart watches that I can program on and came back empty every time. The Pebble doesn't multitask, the TI doesn't have matrix display, the WIMM, Sony, i'm Watch and others don't have enough buttons, are Android (overkill) or don't last long (not to mention that I can't verify my specific requirements without hands-on experience)

I want a wrist-device with RTC (doh), matrix display that's always on (even when stationary), easily programmable, lasts 20 hours on a charge, and at least four buttons (for up, down, enter and back). Will yours be able to do this once finished?

Are you sure? [yes] / [no]

Walltech wrote 4 months ago null point

Most certainly! The 500mah battery should give it plenty of run time according
to rough calculations and rounding up, but I'll test it for sure when it's
complete, and it's a fully featured Arduino Leonardo so the convenience and
community surrounding the Arduino microcontroller is at your disposal. The flick
switch on the side has an up down and push in state, and with the on board
accelerometer, a tap on the screen will be the fourth 'select' state. The
reasoning you cited is half of why I've created this watch, the other half being
the fun of planning designing and building it, I'm glad you like it. This watch
is also cross compatible with iOS and Android too, so unlike every other smart
watch in existence (except pebble), anyone with either device can develop and use the full feature set of the watch as well as the unique features you've pointed out.

Are you sure? [yes] / [no]

Mark Jeronimus wrote 4 months ago null point

That's great. Although I really want the rock switch to do enter and have a separate microswitch on the left or something (not the same height to prevent pushing both at the same time). I own the same rock switch btw, salvaged from an USB MP3 player.

We really need people your age! I bet you're getting a lot of eyes because what you're doing is not typical for people your age, but when I was about 14 I started hacking together lots of stuff and studied boolean logic, digital signal processing and 3D raytracing, which are normally advanced college courses. When I grew older I stayed the same geek but with increasingly many ideas and less time on my hands I could barely finish any project anymore, and after even more time the motivation for starting projects got lost altogether.

Are you sure? [yes] / [no]

Walltech wrote 4 months ago null point

I've definitely gained much attention with this project, Make: interviewed me and wrote an article, and my website and twitter have been exploding with curious and very supportive people. I'm warmly appreciative of all the support that I've received and am genuinely happy and excited so many in fact are interested. Watch this space for a prototype very soon!

Are you sure? [yes] / [no]

Jared Sanson wrote 4 months ago null point

Nice project, I too am building my own OLED smart watch :)
What kind of battery life do you get?

Are you sure? [yes] / [no]

Walltech wrote 4 months ago null point

I don't have an assembled prototype as of right now, that'll change very shortly, and one of the things to test is power consumption and battery life. It should definitely last over a day with 500mah, it's probably closer to 2 or 3.

Are you sure? [yes] / [no]

Shraavan Bandaru wrote 6 months ago null point

I am really impressed with your project! Are planning to add a touchscreen to your watch?

Are you sure? [yes] / [no]

Walltech wrote 6 months ago null point

Hello! Thanks for the interest! At the moment, no, I'm not planning to add a touch screen as I haven't worked with one before and so it wasn't a part of the design process. The 3 way switch is spring loaded, tactile, and feels good to casually flick up and down, and is in the perfect position on the watch to place your thumb on the left side, your middle finger in the middle of the switch's side, and actuate the switch with your index finger. Add a flowing UI and the switch should be more than enough and as simple as a touch screen to use. I have thought about it, but I'm not quite sure if they're made to my size or how to support them with arduino in hardware or software. Thanks for your question!

Are you sure? [yes] / [no]

Walltech wrote 5 months ago null point

As now that the watch has such an incredibly accurate 9 DOF IMU, I scan detect taps on the screen with the accelerometer and use the spring switch to swipe up and down. You could tap on the sides of the watch to navigate that way too. Tilting to scroll when the watch is awake, anything really. You could hold a magnet and use it as a stylus with the magnetometer, there are an incredible amount of features I can make use of, and you can too with the open source code!

Are you sure? [yes] / [no]

Jasmine wrote 6 months ago null point

You should still submit it asap as community voting starts soon. It doesn't have to be finished at this point. We want to see the evolution through the project logs. Hope you have a great time on your holiday.

Are you sure? [yes] / [no]

Walltech wrote 6 months ago null point

I'm looking for a way I can print and scan the form where I am. I would hate to miss out on entering before voting starts.

Are you sure? [yes] / [no]

Jasmine wrote 6 months ago null point

Hello Walltech, I'm really impressed with your project. Can't wait to see it develop over the summer.

btw - we've updated the submission process for The Hackaday Prize, so if you want to *officially* enter this project - login and use the 'submit to' under your project images on the left hand side.

Also, we're starting community judging shortly, so now is the time to make sure you've added info to the project so people can see why you should win The Hackaday Prize. You might also like to add a few more details to your profile page, so we can get to know you better.

Got any questions? Give me a shout. Good luck

Are you sure? [yes] / [no]

[deleted]

[this comment has been deleted]

Walltech wrote 6 months ago null point

Thanks for your interest! I won't have access to a printer/scanner for two more weeks as I'm on vacation, and as soon as I get back, I'll be officially entering the contest with the form. I'll be sure to apply your advice to the project page too! Thanks!

Are you sure? [yes] / [no]

Similar projects