DORHEA 3Pcs Metal Detector Kit Electronic Soldering Practice Kit DC 3V-5V 60mm Non-Contact Sensor Board Module DIY Electronic Part Metal Detector

Operating Voltage: DC 3-5V Operating Current: 40mA Standby Current: 5mA Detection Distance: 60mm Alarm mode: Sound/Light Difficulty: Easy PCB Size : 86*61mm Installation Steps: Step 1:Install Metal Film Resistor R1=200K;R2=2K;R3=470ohm. Step 2: Install Capacitor:C1,C4=104pF;C2,C3=222pF;C5=100uF. Step 3:Install 2pcs S9012 on Q2,Q3;1pcs S9018 on Q1;1pcs potentiometer on VR1. Step 4:Install the LED with the long leg as the positive pole, corresponding to the square pad mounted on the board. Step 5:Install Buzzer and Power socket. Package include: 3 X Metal fetector DIY kit About debugging: The machine is powered by 3 to 5V DC power. Turn on the power and turn on the power switch. At this time, the buzzer will sound. The LED is bright, slowly adjust the VR1 potentiometer, so that the buzzer just does not ring. To adjust the potentiometer to affect the detection distance, the detection distance of the machine is less than 6 cm, affected by the size of the detected object and the environment. Tools required for assembly testing: Electric iron, solder wire, universal meter, tweezers, diagonal pliers, charging treasure Note: The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability. Please purchase carefully!