1: Simple assembly
2: The appearance is small and exquisite
3: Wide range of uses, game entertainment, security inspection, search of metal products on the body, etc.
4: High sensitivity
5: Soldering Learning DIY Kit
Specification:
Supply voltage: DC3-5V
Battery model: CR2032 (not include)
Dimensions: 14.9*2.2CM
Uses: game entertainment, security inspection, search for metal products on the body, etc.
Purpose of this Metal Detector Principle:
Example 1: If you want to detect whether there is a car passing by on a certain road, because the height of the car chassis is 0.5 meters or more from the road, and the cement will be buried at a depth of 5-10CM, so you can bury a coil with a diameter of 1 meter on the ground. Stable, accurate and reliable detection of whether there is a car on it is of great practical value in highway traffic statistics and parking lot prohibited area statistics.
Example 2: A sensor is required on each floor of the elevator controller to detect whether the elevator has reached the stop position. If a mechanical travel switch is used, there will be life and reliability factors; if a photocoupler is used, there will be a long time Dust deposition failure; therefore, the only way is to install a metal detector to determine whether the circuit is on or off based on the presence or absence of metal. This will have high practical value in many equipment and machines.
Package List:
1x PCB board
1x 3V Buzzer
1x 100UF25V electrolytic capacitor
1x 220K 0.25W Resistor
1x 2.2K 0.25W Resistor
1x 100 ohm blue and white potentiometer
1x 9018 triode
1x 9015 triode
1x 9012 triode
1x 12D07 toggle open
1x 2032 battery holder
2x 104 ceramic capacitors
2x 222 polyester capacitors