I was inspired by this project: How do I build a bracelet that vibrates once every n minutes? but I want to take it a step further.

The main idea is creating a vibrating bracelet that is controlled by an application from your phone, which could be used as an alarm.

To be more specific, I've thought of creating an app, where the user enters the time that must pass, until the bracelet starts vibrating for a specific amount of time.

I have almost no experience on projects like this so I would appreciate it a lot if you could give me some instructions on how to deal with this one.

I am thinking of using an arduino gemma due to its really small size. Also I don't know if I am right, but should the app and the arduino be connected via bluetooth?

Finally, to get it a little more fancy I would also like to add this idea: The user of the app records himself telling the tasks he must accomplish the next morning. So, when the bracelet starts vibrating to wake him up he can use it( the bracelet) to hear the message. Could I add something like that: https://www.adafruit.com/product/1890 to my cirquit? Is this something that can be easily implemented?

Thanks in advance for any response!!!


Ok, I've done some research and my questions now are more specific. I decided to keep only the vibration and put aside the audio transportation. I want to use arduino gemma or arduino flora. I also read that gemma is most suitable for simple led projects, so would it be able to perform my idea? Also as far as the bluetooth is considered, can hc-06 be used with arduino gemma or flora...I failed to find any projects on the internet where they are combined.

  • \$\begingroup\$ I'm voting to close this question as off-topic because it seems to ask for a complete design, which is not an appropriate type of question for this site. \$\endgroup\$ – Wouter van Ooijen Feb 26 '16 at 18:19
  • \$\begingroup\$ @WoutervanOoijen Hey!!No, of course I'm not asking for a complete design. All I need is some bulletpoints of what may I need for this project... As you probably understand I am new here, so I am not pretty sure if this is the right place to ask this question...I just saw that you were very helpful to the person who asked the original project and I just imagined that you could give me some insights as well..Thanks for your time :) \$\endgroup\$ – Alice1nw0 Feb 26 '16 at 18:30

The basic idea of "Battery + Pager Motor + Microcontroller + Bluetooth" is simple enough to do. There are tons of projects that do the same. Making it into a audio device is significantly harder, but can be done by using a Bluetooth audio device like the XS3868 or SPK-8635-B. Instead of an led, you include the pager motor instead (with a transistor). The rest is done via the app and the cell phone. Either way, it's not a one day project and you will need to dig down to figure out each part, but you have the general idea of it correct.


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