Android Question App to control AC lights

Discussion in 'Android Questions' started by skyluke83, Jun 4, 2015.

  1. skyluke83

    skyluke83 Member Licensed User

    Hi All,

    do you have ideas or experiences on how to create an app to control AC lights on/off? what should be the right hardware platform if i want to use a library for b4a that already exists?

    Thank you in advance
  2. derez

    derez Expert Licensed User

    1. This
    does it without any other HW, just its supplied application, directly from your phone to the plug at home.
    2. Arduino uno + relay + b4j server application on your home computer + b4a application on your phone. Phone calls the home server and tell it your switch position, the command is transferred to the arduino by usb or by Bluetooth, the arduino switch the relay to the requested position.
    With bluetooth you need this
    The relay is here
    walterf25 likes this.
  3. skyluke83

    skyluke83 Member Licensed User

    Hi, wow thanks for the information! I like the second option better, because i want to create a complex scenario. One question: which library should i use for Arduino? Is there any example?

    Thank you
  4. derez

    derez Expert Licensed User

    You don't need any special library for using Arduino. You need Serial, Asyncstreams and maybe ByteConverter.
    The establishment of the connection is done by the pc or the device to the arduino - pc starts serial object to the arduino com port (when in usb) or device finds the Bluetooth of the arduino. In both cases the data is passed by Asyncstreams. I have found that using AsyncstreamsText is very useful to receive complete data messages from Arduino.
  5. skyluke83

    skyluke83 Member Licensed User

    Derez, thank you 100000000 times for your precious help. I noticed Arduino "Mega ADK" board seems to be more suitable for android. Do you know the difference? is that i can directly plug to the android USB, right? 'cause that would help..

    Thank you!
  6. derez

    derez Expert Licensed User

    I am not familiar with this Arduino. I have received Arduino Uno starter set from my kids as a birthday present 3 month ago and I'm building cars since then...:)

    I've googled and saw what it is. I don't see the advantage of connecting with a usb cable to the android, I prefer the BT connection, but may be I don't see your app type. As I wrote above, I build cars and they do not move well with a cable hanging from them.
    Last edited: Jun 11, 2015
    RandomCoder and fixit30 like this.
  7. fixit30

    fixit30 Active Member Licensed User

  8. microbox

    microbox Active Member Licensed User

    Hi, in my case I used the following hardware setup.
    1. Arduino mega(Uno will be fine)
    2. Solid state relay(to switch motored appliances)
    3. Android phone as main controller and SMS receiver
    4. OTG cable
    See example()
  9. tchart

    tchart Active Member Licensed User

    Why not just get WiFi controlled LED lights like Limitless or Mi-light? Much cheaper and safer than messing around with relays and AC power. You can use my library or check out my app that turns lights on and off based on a schedule ( All my outdoor lights are automated.
  10. Thuong

    Thuong Member Licensed User

    simple: Arduino Uno + Bluetooth + relay with B4A code Bluetooth
    difficult : Arduino UNO + Ethernet + relay with B4A code UDP
    more: Arduino UNO + GSM Shield + relay with B4A code SMS

    I can help you , Luca
  11. freedom2000

    freedom2000 Well-Known Member Licensed User

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