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  1. R

    Any electrical engineers here? Vibrating motor + time control

    Problem I've had for battery powered stuff and Arduino is that they have cheap little 7805 regulators that drop like 5mA all the time, and they have a power led pulling another 10 or so. You can always desolder or clip the leads on those I guess though. Then hook the battery to the 5v vcc pin...
  2. R

    Any electrical engineers here? Vibrating motor + time control

    I was thinking drive the motor with a single transistor. Should be pretty easy to find one that can drive the 200 mA and run at logic levels on the base/gate. You wouldn't need to reverse a vibrating motor ever, and you could always PWM from fimware pin if you had to control speed. Like you say...
  3. R

    Any electrical engineers here? Vibrating motor + time control

    I work as an EE. Pretty much you have everything right, you'd want a battery a button a microcontroller and probably one transistor and however many LEDs you want, and a custom pcb. Do you know how big you want it to be and what kind of battery? I'd probably use an avr attiny microcontroller...
  4. R

    Ideas and Failures

    IDEA 
    Sorry, this is going to be a long post, you see it's a list of my failed business attempts and then a couple ideas I've been tossing around. Failures: 1. A couple years ago: partnership doing electronics educational kits with a coworker. He supposedly had a network of teachers and professors to...
  5. R

    Read Fastlane, now I'm here

    INTRO 
    I'm currently working as an electrical engineer in the military industrial complex. I have a bachelor's in brewing from Germany and a masters in materials science. Electronics and software is self taught. I've been trying and failing to start small businesses since I was a teenager. Web...

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