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Looking for a cheap bluetooth module

Discussion in 'Radio and Wireless' started by supak111, Jan 6, 2017.

  1. supak111

    supak111 ★ƃuᴉɯǝɥɔs sʎɐʍlɐ★

    323
    4
    Apr 29, 2012
    Hey everyone I'm looking for a cheap standalone bluetooth module, just something that when my phone get near it and connects the module should output a small HIGH signal so that I can activate a small transistor. I have no clue what kind of module I need for this so some help would really help.

    I have found this module HC-05 bluetooth, it has a STATE pin that goes HIGH when BT is paired (usually for an LED light) but would this module work if I just connect power to it? Would I be able to connect my phone to it without having the TX and RX connected to anything?
    [​IMG]
     
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