Smart watches are a craze right now. We all recognize that these gadgets have a lot of potential, but for many of us the price tag is still too steep. However, if you add educational value to the cost by making it into a DIY project, a smart watch becomes more enticing! Who wouldn't want to proudly display a smart watch that they built themselves?
Fantastic example by "GodsTale" on instructibles.
This rather stylish-looking watch was assembled from easy to source components and cost well under $100. That's right, you could probably build your own smart watch in an afternoon thanks to the work others have put into tutorials like this one by Instructibles user "Godstale." While you can see that the strap is stapled together, it still has more personality and style than many of the commercial alternatives.
For this smart watch, you would need to buy:
- Arduino Pro Mini (~$10)
- HC-06 bluetooth module (~$10)
- Small OLED display (~$40)
- Li-Po battery (~ $5)
After a quick assembly, you can download the code for your Arduino as well as the app for your Android device. Of course, keep in mind that you could always modify this parts list for your own tastes. For example, I personally might be tempted to upgrade that OLED display to a 1.3 inch one, and a larger battery is rarely a bad idea.
The app for your Android device allows you to determine what data is sent to, and consequently displayed on, your smart watch screen. However, if you consider the fact that an Arduino is sitting there on your wrist, you may start to come up with your own ideas to add. Consider for a moment that you could easily add a GPS module, gyroscope, heart rate monitor, microphone, temp sensor, whatever your heart desires!
— Caleb Kraft, Chief Community Editor, EE Times