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Projects General Guidance
1

Dear Arduino community,

My name is Binsento and I am new here, just started to get into Arduino as I want to start a project soon. I have some experience with java/android app development, not anything on adapt level yet.

Regarding my project, as I have little experience with micro controllers or anything of that kind. So it hard to imaging what I need for my project.

I want to have a system, where i press a one of four buttons and this button will send out a signal via some wireless connection service (I have Bluetooth on my mind) to my mobile phone app which as some code to when this specific signal is received.

And one of this button also as to activate/deactivate a single LED.

Preferably I want it as small as possible so that is one of the limiting factors.

If it would be possible to someone as information to share that is vital that I need to know, please don't hesitate to give me a recommendation.

Thank you for your consideration.

2

To be more abstract, I would just like to know what the major components I need for this project.

3

What distance and environment are we talking about?

Have you considered an IR remote (~30 feet indoor, line of sight)

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4

The distance of operation for the Bluetooth connection would be pretty low, around 2 meters.
Infra red isn't suitable for my gadget, as it would be most of the time not in LOS.

I am considering to use Blend Micro from RedBearLab, as there is already a Bluetooth chip in the board. Any thoughts or comments about this products would be greatly appreciated as it would help me decision which to choose.

The size is great, but not so sure if it would be able to handle my needs.

Any input would be greatly appreciated.

5

The BlendMicro as differed pin functions 14 in total excluding the Analog and the rest.
At the moment of my knowledge I can assume that, if I wanted to connect a single press/release switch to the board I would need to connected it to power and a pin.

Then in the program of the board I could code the function of the pin when a voltage is applied.
And when is applied, like a onClick method in java/android, it will use the Bluetooth chip to send a signal.

I would also need to apply a special code to my gadget, a UUID. So that my phone will be able to connect to my gadget

Regarding the power supply, I read here the operating voltage is 3.3V but the input voltage is 3.3 - 12v (VIN). Wouldn't that mean I would be able to use a 12v battery to supply my board? And does the board then take care of it self regarding the difference between the voltages?

Any comments on my train of thought would be great.