5pcs diy metal detector

Feature: Supply voltage: 3-5V Dimensions: 66 x 61MM Maximum detection range: 5CM (Best detection range: 1 CM - 2 CM) Principle explanation:   Q1, L1, L2, C2, C3, R1, W composed of high-frequency oscillation circuit, adjustment potentiometer W, you can change the oscillation stage gain, the oscillator oscillating in a critical state, that is just the oscillator start-up. Q2, Q3 when the composition of the detection circuit, the circuit normally oscillate voltage AC voltage exceeds 0.6V, Q2 will be in the negative half cycle of conducting the C4 discharge short circuit, resulting in Q3 ends; when it detects metal objects near the coil L1, will be metal conductor eddy current is generated, the oscillation circuit of the energy loss increases, positive feedback weakened in the critical state of the oscillator weakened, if not impossible to maintain the minimum required energy oscillations and to stop, so Q2 is turned off, R2 to C4 charge, Q3 is turned on, pushing the buzzer sounds. According to whether the sound, you can determine whether the detection coil underneath the metal object. Note: If you need longer detection range and higher sensitivity, please create their own search coil, search coil diameter of the larger suppliers will be farther away from the probe. Package included: 5 x DIY Metal Detector Kit 

Description: Recommended power supply: 3V Cut out the six pillars in the matching box when installing so that the board can be closed to the shell, this can enlarge the effective dectecting distance. Diagram: Note: Battery is not included. Package included: 1 x Metal Detector Kit

Feature: Supply voltage: 3-5V Dimensions: 66 x 61MM Maximum measure range: 5CM (Best measure range: 1 CM - 2 CM) Principle explanation: Q1, L1, L2, C2, C3, R1, W composed of high-frequency oscillation circuit, adjustment potentiometer W, you can change the oscillation stage gain, the oscillator oscillating in a critical state, that is just the oscillator start-up. Q2, Q3 when the composition of the measure circuit, the circuit normally oscillate voltage AC voltage exceeds 0.6V, Q2 will be in the negative half cycle of conducting the C4 discharge short circuit, resulting in Q3 ends; when it measure metal objects near the coil L1, will be metal conductor eddy current is generated, the oscillation circuit of the energy loss increases, positive feedback weakened in the critical state of the oscillator weakened, if not impossible to maintain the minimum required energy oscillations and to stop, so Q2 is turned off, R2 to C4 charge, Q3 is turned on, pushing the buzzer sounds. According to whether the sound, you can determine whether the measure coil underneath the metal object. Note: If you need longer measure range and higher sensitivity, please create their own search coil, search coil diameter of the larger suppliers will be farther away from the probe Package included: 5 x DIY Metal Measure Kit

Description MDS-60 DIY Metal Detector Module This small do-it-yourself metal detector kit is the perfect way to learn basic soldering while creating a small, fully functional metal detector. This metal detector module works within a 60mm radius of the object being detected. Quick Spec Operating voltage: DC 3-5V Operating current: Standby current: Detection depth: Detection and alarm mode: Sound and Light Circuit size: 86 x 61 mm Resources Assembly Instructions More Products View More Products

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Descriptions: This Floureon 3 in 1 stud, metal, and live AC wire auto calibrated detector is a good tool when you decorate your home. It helps you find right position to drill, hanging your shelves, TV, cabinet, pictures, mirror and etc. It is useful in locating hidden metal pipes, live wire, stud and wooden frames accurately. It has 3 detecting modes: 1. Stud Scan Mode: locates the edge of metal and wood stud in normal walls up to 0.71 inches(18mm); 2. Metal Scan Mode: locates the metal such as iron, copper and aluminum pipe up to 1.18 inches(30mm); 3. AC Wire Scan Mode: locates the AC wire up to 2 inch(50mm). This detector comes along with a audio and visual indication which allows you to make a mark easily when the metal, AC live wire and stud is detected. The edge groove is convenient to make a mark during detection. Features: -An advanced detector with LCD screen and sound beep indicator, ideal for DIY decoration. -Lightweight, ergonomics and handy design, convenient to have around the home, office. -Three modes are optional: it can be used to detect wood and metal stud, metal and AC wire. -Locates studs easily behind walls, floor and ceilings up to 18mm (0.71 inches) deep. -Locates hidden metal objects easily up to 30mm (1.18 inches) deep. -Detect the unshielded live AC wire up to 50mm (2 inches). -Auto calibration function. -Low battery indication and auto power off after usage. Note: 1. The unit needed to be calibrated before detecting the object. 2. Detection depth and edge detection can vary due to moisture content of materials, wall texture, paint, etc. 3. If the unit will not be used for an extended period of time, take out the battery from the unit. Package Included: 1 x TS79 3 In 1 Stud Finder Detector Metal Detector 1 x User manual Detail Pictures:

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Feature: Working voltage: 5V 8-channel infrared detector Applications: Robot Smart Car Laboratory DIY Package Included: 5 x Sensor Module

Description: 161pcs Mini Drill Multi Rotary Tool Accessories Set Grinding Polishing Kits for Dremel   Specification: Quantity: 161pcs Shank diameter: 1/8" (3.175mm) Application: Mainly used for DIY carving sanding, cutting, polishing / wood, metal, mold polishing.   Sizes and Quantity: 1/2''(12.7mm)Sanding paper wheel: 10pcs 1/4''(6.35mm)Sanding paper wheel: 12pcs Wool polishing wheel: 5pcs Cotton wheel: 1pcs Wool grinding head: 1pcs Wheel grinding head: 10pcs Steel brush: 3pcs Brass brush: 3pcs Nylon brush: 3pcs Polishing paste: 2pot 25mm Resin cutting wheel: 2pot(72pcs) Sand polishing disc: 12pcs 32mm Interleaf wheel: 1pcs Polishing stone: 1pcs Clamp mandrel: 3pcs Tapping rod: 1pcs Brass chuck: 4pcs Wrench: 1pcs Rubber wheel: 2pcs Milling cutter: 2pcs Diamond grinding needle: 8pcs Drill bits: 6pcs Resin fiber wheel: 5pcs Rubber grinding pad: 1pcs   Package Included: 161pcs x Rotary Tool Accessories   Notice: 1.Please allow 1-2mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!   More Details: