DIY Bluetooth Speaker Production and Assembly Electronic Welding Ki

Save time with this handy box full of the most practical and common e-components 1000 pcs Resistor, 180 pcs Transistor, 120 pcs Electrolytic Capacitors, 100 pcs Diodes, 200 pcs 3mm 5mm LED, 300 pcs Ceramic Capacitors, 3 pcs DC-022 3 pcs DC-005 DC jacks, 2 pcs LM358, 2 pcs NE555, 2 pcs JRC4558, 1 mini speaker, 2 pcs 1n270 Germananium Diode, 2 pcs Germanium Transistor, 12 pcs Trim Potentiometer, 4 pcs PCB Total 1900 pcs Components The Assortment comes in durable cardboard box, each components type is sorted accordingly Each different component is packaged in a plastic bag, Resistors values are stamped with the according value Mega Electronic Component Assortment including the following components: 1000 pcs Resistor, 1/4w 1% metal film Resistor, 50 different values each value has 20 pcs 0Ω, 0.5Ω, 1Ω, 2.2Ω, 3.3Ω, 4.7Ω, 5.6Ω, 6.8Ω, 8.2Ω, 10Ω, 22Ω, 33Ω, 47Ω, 56Ω, 68Ω, 82Ω, 100Ω, 220Ω, 330Ω, 470Ω, 560Ω, 680Ω, 820Ω 1K, 2.2K, 3.3K, 4.7K, 5.6K, 6.8K, 8.2K, 10K, 20K, 33K, 47K, 56K, 68K, 82K, 100K, 220K, 330K, 470K, 560K, 680K, 820K 1M, 2.2M, 3.3M, 4.7M, 5.6M, 10M 180 pcs Transistor, TO-92, 16 different values each value has 10 pcs S9011, S9012, S9013, S9014, S9015, S9018, S8050, S8550, C1815, 2n5401, 2n5551, 2n3906, 2n9604, A1015, A42, A92, A733, C945 2 pcs Germanium PNP Transistor 120 pcs Electro Capacitors, 16v-50v 12 different values each value has 10 pcs 0.22uF, 0.47uF, 1uF, 2.2uF, 4.7uF, 10uF, 22uF, 33uF, 47uF, 100uF, 220uF, 470uF 100 pcs Diodes, 8 different types each value has 5 to 25 pcs 1n4148, 1n5399, 1n5819, FR107, FR207, 1n5408, 1n4007, 1n5822 2 pcs 1n270 Germanium Diode 100 pcs 3mm LED, each 20 pcs red, green, blue, yellow, white 100 pcs 5mm LED, each 20 pcs red, green, blue, yellow, white 300 pcs Capacitors, Ceramic 50v, 1pf to 0.1uF, 31 different values each value has 10 pcs pF:2pf, 3pf, 5pf, 10pf, 15pf, 22pf, 30pf, 33pf, 47pf, 68pf, 75pf, 82pf, 100pf, 150pf, 220pf, 330pf, 470pf, 680pf nF:1nF, 1.5nF, 2.2nF, 3.3nF, 4.7nF, 6.8nF, 10nF, 15nF, 22nF, 47nF, 68nF uF:0.1uF 2 pcs LM358Dual OpAmp IC 2 pcs NE555Timer Oscillator IC 2 pcs JRC4558Dual OpAmp IC 12 pcs Trim Potentiometers, RM065 100Ω, 500Ω ,1K, 2K, 5K, 10K, 20K, 50K, 100K, 200K, 500K, 1M 4 pcs Prototype PCB 2*8, 4*6, 5*7, 7*9 cm 3 pcs DC JackDC-022 5.5*2.1mm 3 pcs PCB DC JackDC-005 5.5*2.1mm 1 pcs 0.25W 8Ω Mini Speaker shipping package was with palstic box

escription: 1. It can be controlled by remote control to realize the volume control of the switch 2. Full-range speaker with PU side, silver-black diaphragm 40 magnet 4 ohm 3W, high cost performance, clear sound quality 3. Interface 3.7-5V DC power supply to automatically play music, stereo power amplifier, support Bluetooth, support power-off memory, U disk to play music 4. Acrylic shell is composed of 6 pieces of 3mm high transparency acrylic spliced together. Exquisite and beautiful, the brown protective film needs to be removed before splicing 5. Very suitable for welding connection and DIY production teaching and training Parameter: Channel output: 2 channels Output power: 3w+3w Power supply voltage: DC 4.2-5V, voltage 5V exceeding will damage the module Rated current: 1.5A-2A Wiring instructions: connect the white terminal to the speaker and the red terminal to the power supply Bluetooth operation: Turn on the Bluetooth of the mobile phone, scan the device directly, and find "XC 046 Click to connect. After disconnecting Bluetooth, it will automatically switch to the USB flash drive. Circuit function: The red terminal of the Bluetooth module is 5V power supply, the white terminal is for the left and right channels of the speaker, the red wire is positive +, and the black is negative -. With the sound of music or other sounds, the LED lights follow the rhythm of the sound (the speed of the sound flashes and moves. After the welding is successful, you can feel the beautiful melody combination of sound and light. Circuit principle: voice-activated LED melody The lamp circuit is composed of a power supply circuit, a microphone amplifier circuit, and an LED light indicator circuit. The power supply uses two batteries. The MIC converts the sound signal into an electrical signal, which is coupled to Q1 through C2 for amplification, and the amplified signal is sent to U1 and U1 pushes the LED to emit light , The louder the sound, the higher the brightness of the LED, the faster the water flow Notice: All parts need to be installed by yourself. The outer cover is transparent if the paper is torn off. The whole set of bluetooth speaker kit is equipped with uSB power cord. The bluetooth circuit boards are all welded. You only need to connect the wire and assemble the sound control board. The power supply can be powered by a mobile phone charger or a computer 5V. The sound quality is better when using a current of 2A. . Reminder: Please strictly follow the product instructions. Improper use and wiring will cause the amplifier to fail to work normally or damage the amplifier. Package included: DIY parts*1

Portable Car Air Compressor Electric Wireless Tire Inflator Air Pump Rechargeable Digital Display Auto for Car Motorcycle Balls Product Description: 1. Mini size, portable and easy to operate. 2. Wear-resistant rubber inflatable tube, anti-freezing, not broken, explosion-proof, high temperature resistance. 3. Electric air pump with 4 switchable pressure units (PSI, BAR, KPA, KG/CM²), so you can set the tire pressure according to the need.The compressor shuts off automatically when the set tire pressure is reached. Maximum pressure is about 120 PSI. 4. High capacity rechargeable battery: The wireless model is equipped with 4000mAh certified lithium ion battery, which can be inflated without connecting the external power cord, which is very convenient. 5. Built-in LED light that can be turned on automatically and rear display, easy to use even at night. 6. The charging pump is equipped with three nozzle adapters. It can be inflated next to tires, balls, air mattresses and toys. 7. Exclusive mini air pump for family and journey, suitable for inflating tires of cars, bicycles and motorcycles, as well as balls and air cushions; Specifications: Product name: multi-function intelligent air charging pump Type: vehicle air charging pump Color: Black Material quality: ABS Electricity flow, 7A Electric voltage: 12 V Power: 85W Product size: about 6.5*7.5*18cm Packing size: about 9.5*8.7*21.5cm Length of inflatable tube: about 15.5cm Air pressure flow: 12L/min Maximum pressure: 120PSI Display unit: PSI, BAR, KPA, KG/C㎡ Scope of application: automobile motorcycle electric bicycle ball Wired charging pump: Specifications: Mechanical; Digital display device Power mode: cigarette lighter Length of power cord: about 295cm Net weight: about 335G Products include: 1X* Intelligent air charging pump 1 * inflatable tube 3* Inflatable accessories 1* Cigarette lighter power cord Wireless charging pump: Specification: digital display Net weight: about 430g Battery capacity: 4000mA Length of power cable: about 50cm Charging time: about 3 hours Duration: about 25 minutes Products include: 1 * Intelligent air charging pump 1 * inflatable tube 3 * Inflatable accessories 1 * charging line Notes: 1. All pictures are professionally calibrated, but please understand that there may be some deviation in the setting of ambient light and display equipment. 2. The data is measured manually, and there may be some deviation, but it does not affect the use.