| ??? 12/12/11 06:41 Modified: 12/12/11 06:47 Read: times |
#185075 - OK..great..maybe Links Responding to: ???'s previous message |
Thank you all
[On/Off connected to one of "sensitive leg" AT89S51/2 which related to firmware ] 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.. http://www.facebook.com/photo.php...472&type=3 Let that for "portable" equipments. First,I'm thought with low cost accellerometer(1 axis/2 axis).But NO at local electronic stores. Then,I saw only "reed switches" and the cost very cheap. Placing very low cost magnet(with Ballpoint pegas),which taken from pulpen.. http://www.facebook.com/photo.php...472&type=3 So,like like this: http://www.facebook.com/photo.php...472&type=3 In magnifier...(I only used 1 magnet and 1 spring). I'm calculated the flexibility of spring(tug the spring of pulpen for it) and distance of magnet to reed switch for operation of thief protection. Maybe there's another ways?links? Thank you Jeckson S Ben |
| Topic | Author | Date |
| Freeze..thief protection | 01/01/70 00:00 | |
| Alarm Sensors | 01/01/70 00:00 | |
| Earth magnetic field sensor | 01/01/70 00:00 | |
| inexpensive solid state magnetic field | 01/01/70 00:00 | |
| It means.. | 01/01/70 00:00 | |
| ??? | 01/01/70 00:00 | |
same | 01/01/70 00:00 | |
| Too vague! | 01/01/70 00:00 | |
| Cost - and what type of protection/detection | 01/01/70 00:00 | |
| How low is "low" cost? | 01/01/70 00:00 | |
| OK..great..maybe Links | 01/01/70 00:00 | |
| Still no idea what you actually want | 01/01/70 00:00 | |
| What exactly? | 01/01/70 00:00 | |
| Bounce | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| If it's networked | 01/01/70 00:00 | |
| hard to handle | 01/01/70 00:00 | |
| Come on ... it requires a number | 01/01/70 00:00 | |
| numbers | 01/01/70 00:00 | |
| cost and reliability | 01/01/70 00:00 | |
| cost | 01/01/70 00:00 | |
| Does that mean you don't know what your price target it? | 01/01/70 00:00 | |
| soft base | 01/01/70 00:00 | |
| manufacture products | 01/01/70 00:00 | |
| shock sensors | 01/01/70 00:00 | |
| advice | 01/01/70 00:00 | |
| Capacitive solutions can be projective | 01/01/70 00:00 | |
| metal.. | 01/01/70 00:00 |