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Jecksons Ben
12/17/11 03:44
  12/17/11 04:26

Read: 361 times

#185135 - cost
Responding to: Joseph Hebert's previous message
Jeckson, I believe that when Richard or Andy ask for a number, they're asking about cost per unit, not projected sales volume. How much (or how little) do you want to spend on each alarm sensor?

with MCUs,It's only 2 US$(AT89S51/52 or MSP430) include "thief sensor".
For ATmega perhaps only 4-7 US$.Depends with kind of ATmega's
with NXP LPC..I'm still looking the tables price of NXP.

The simplest solution would simply be to mount a micro-switch on the rack that is contacted by the case. If the case is removed (even a fraction of an inch) the contacts trigger an alarm, but as long as the case is securely mounted to the rack the circuit will be completely insensitive to shock induced false alarms.

As we knew that simple switch maybe very-very cheap--->the knob that appears from boxes(maybe below).
But that way only at "hard base" and "weight of Box" related to switch operation(ON/OFF).
What about soft base?like placing at above bed.
Shake the box? without pull from base..
Let that for "portable" equipments.

Thank you
Jeckson S Ben

List of 28 messages in thread
Freeze..thief protection      JecksonS Ben      12/10/11 07:27      
   Alarm Sensors      Joseph Hebert      12/10/11 11:06      
      Earth magnetic field sensor      Bert Van Den Berg      12/19/11 10:36      
         inexpensive solid state magnetic field      JecksonS Ben      12/20/11 01:36      
         It means..      JecksonS Ben      12/28/11 04:27      
            ???      Per Westermark      12/28/11 06:11      
               same      JecksonS Ben      12/31/11 04:12      
   Too vague!      Andy Neil      12/10/11 12:04      
      Cost - and what type of protection/detection      Per Westermark      12/10/11 13:21      
      How low is "low" cost?      Andy Neil      12/11/11 07:33      
         OK..great..maybe Links      JecksonS Ben      12/11/11 23:41      
            Still no idea what you actually want      Andy Neil      12/12/11 14:12      
      What exactly?      JecksonS Ben      12/12/11 23:53      
         Bounce        Per Westermark      12/13/11 00:59      
            OK      JecksonS Ben      12/14/11 00:32      
         If it's networked      Andy Neil      12/14/11 13:43      
            hard to handle      JecksonS Ben      12/15/11 01:19      
               Come on ... it requires a number        Richard Erlacher      12/15/11 08:42      
                  numbers      JecksonS Ben      12/16/11 01:02      
            cost and reliability        Joseph Hebert      12/16/11 06:36      
               cost      JecksonS Ben      12/17/11 03:44      
                  Does that mean you don't know what your price target it?      Richard Erlacher      12/17/11 08:57      
                  soft base      Joseph Hebert      12/17/11 10:11      
                     manufacture products      JecksonS Ben      12/18/11 03:07      
                        shock sensors        Joseph Hebert      12/18/11 16:17      
                           advice      JecksonS Ben      12/19/11 00:49      
                              Capacitive solutions can be projective      Per Westermark      12/19/11 01:00      
                                 metal..      JecksonS Ben      12/19/11 01:09      

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