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Sonic toothbrush hacking moding

Discussion in 'General Electronics Discussion' started by Zak_Mak, Nov 13, 2013.

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  1. Zak_Mak

    Zak_Mak

    1
    0
    Nov 13, 2013
    I need help with Sonic toothbrush hacking

    I am wondering if any of the experts here could answer any of these questions with the limited information that I can provide

    Information that I have:

    The Philips toothbrush has a two minutes turn off timer!

    a 30 second quad spacer (brief pause of vibration) every 30 seconds

    The pcb has a TI MSP430G2412 microcontroller ( http://www.ti.com/product/msp430g2412 ) with the additional markings of “ 21K G4 “ and “ AS&F A ” on it.

    It drives an electromagnet that consists of two coils, at approximately 1 MHz

    Most of this and some more is visible on the pictures of the pcb and the assembly that I included.

    My QUESTIONS are:

    1, What is the easiest way to disable or change the 2 min power off timer??

    (I very much would prefer not to reprogram or to replace the microcontroller, but if there is no other way than )

    2, Is it possible to reprogram this specific controller and if yes is it possible to do so without desoldering it?

    I know it is a long shot, but I hope that one of you creative people can help me with a solution.
    Thank you very much for your time spent thinking about this!
     

    Attached Files:

    Last edited by a moderator: Nov 13, 2013
  2. KJ6EAD

    KJ6EAD

    1,114
    159
    Aug 13, 2011
    That 1MHz figure 'sounds' (pun) way too high. Even professional ultrasonic dental devices operate around 32kHz.

    As to the microcontroller; you'll probably have to program your own and solder it in.
     
  3. davenn

    davenn Moderator

    13,813
    1,945
    Sep 5, 2009
    ^^ what he said and the timing will be done by the code in the uController

    and welcome to the forums :)

    Dave
     
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