anyone up for this job (need timer-pay available)

Discussion in 'The Projects Forum' started by dalder, Jun 19, 2009.

  1. dalder

    Thread Starter New Member

    Jun 19, 2009
    4
    0
    Hi looking to hire someone to make a very small timer board
    that will allow the use of either a 1.5 aaa battery or 9v battery to start and stop a small vibration motor for a period of approx 30 sec, the ability to change duration would be nice but not a priority if it makes the circuit larger. Very limited budget. we would be using this in a small water proof container for a sturgeon conservation program. email me your quotes, we would also acknowledge you on the fraser sturgeon conservation website.

    <snip>
     
    Last edited by a moderator: Jun 20, 2009
  2. John Luciani

    Active Member

    Apr 3, 2007
    477
    0
    The wide range of power supply voltages limits the options for your
    project.

    You should be able to do this with two TLC551 timers. The TLC551 is
    a 555 timer that runs from 1V to 15V. One timer would set the dutycyle
    another would set 30second period. You should be able to find
    a variety of circuits on the web.

    (* jcl *)
     
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,170
    395
    Does the motor run on 1.5V? @ what current?, and you would rather operate the whole thing on 1.5V but could use two batteries, size being the main concern. What are the size limitations of package? Can you explane the motor timing sequence a little more?
     
  4. dalder

    Thread Starter New Member

    Jun 19, 2009
    4
    0
    I dont have all the details on the motor but it comes from a xbox 360 controller we found that hooking up single AAA battery worked just fine.
    The speed of the motor with the AAA was fine so we dont need to worry about that. Just need to stop and start it.
    This doesnt have to be fancy. Were putting this inside an otterbox waterproof case and using in hopes to attract sturgeon. We run a sturgeon tag and release program and want to see if this can help us catch more effieciently. So all we want to add is the ability for the motor to not be running all the time but to shut off for periods of 30 sec or a minute. The times dont have to be exact. By going on and off the unit would simulate a fish in distress. If we have the ability to modify the times to give us 3 options that would be great but need to keep this as small as possible so it fits inside the small waterproof case.
     
  5. dalder

    Thread Starter New Member

    Jun 19, 2009
    4
    0
    I dont have all the details on the motor but it comes from a xbox 360 controller we found that hooking up single AAA battery worked just fine.
    The speed of the motor with the AAA was fine so we dont need to worry about that. Just need to stop and start it.
    This doesnt have to be fancy. Were putting this inside an otterbox waterproof case and using in hopes to attract sturgeon. We run a sturgeon tag and release program and want to see if this can help us catch more effieciently. So all we want to add is the ability for the motor to not be running all the time but to shut off for periods of 30 sec or a minute. The times dont have to be exact. By going on and off the unit would simulate a fish in distress. If we have the ability to modify the times to give us 3 options that would be great but need to keep this as small as possible so it fits inside the small waterproof case.
     
  6. dalder

    Thread Starter New Member

    Jun 19, 2009
    4
    0
    can you build this and how much ??

    I dont have all the details on the motor but it comes from a xbox 360 controller we found that hooking up single AAA battery worked just fine.
    The speed of the motor with the AAA was fine so we dont need to worry about that. Just need to stop and start it.
    This doesnt have to be fancy. Were putting this inside an otterbox waterproof case and using in hopes to attract sturgeon. We run a sturgeon tag and release program and want to see if this can help us catch more effieciently. So all we want to add is the ability for the motor to not be running all the time but to shut off for periods of 30 sec or a minute. The times dont have to be exact. By going on and off the unit would simulate a fish in distress. If we have the ability to modify the times to give us 3 options that would be great but need to keep this as small as possible so it fits inside the small waterproof case.
     
  7. John Luciani

    Active Member

    Apr 3, 2007
    477
    0
    I did some work on a haptic compass with vibrating motors. Here are
    links to a couple of motors that we looked at ---

    http://pagermotors.com/index_files/Products/DiskL/DiskL.htm
    http://www.sparkfun.com/commerce/product_info.php?products_id=8449

    I am not sure how much current your motor draws.
    Both of these motors are 75mA. Using a AAA battery which has a capacity
    of 1250mAh at 50% duty cylce (30 seconds on and 30 seconds off) gives
    you a battery life of around 33 hours (1250mAh / 75mA / 0.5).

    If you have room in the Otter box I would go for a larger battery.
    AA is 2900mAh. C is 8350mAh and D is 20500mAh.

    (* jcl *)
     
  8. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,170
    395
    Here is a 30/60 sec timer that is tested, & ready to ship.I agree with John Luciani on battery selection, uses one AA, & one N in series. V loss due to transistor is a measily 40 mVs.
     
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