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Diy Rotating Digital Led Display Module Alarm Clock Electronic Digital Clock Kit 51 Scm Learning Board 5V Ds1302 Features: The Electronic Clock Adopts The Principle Of Digital Display Design, Uses Plug-In Component Design, And Has A High Degree Of Success. Contains Six-Time Animation, Efficient Time Display And Various Functions. The Led Flashing Light Includes Four Autonomous Animation Display Modes. The Lighting Effects Of The Fruit Are Very Decorative, Bringing Good Aesthetics To The Home And Table. The Digital Clock Alternates Between Time And Temperature. Accurate And With A Function To Turn Off The Memory While Traveling. Thanks To The Alarm Function, It Can Be Turned Off. With Lighting Control Function, Adjust The Brightness According To Your Environment. Circuit Principle: Using Single-Chip Microcomputer As The Main Control, Use Ds1302 Travel Time Chip To Provide An Accurate Travel Time Source, Combined With Digital Tube Led Indicators To Display Specific Time Values. Combined With The Light Temperature Detection Element, It Can Achieve Brightness Adjustment And Temperature Checking. Test Function. The Single Chip Control Button Is Combined With The Necessary Key Input Adjustment Function, And The Clock Sound Is Processed By A Single Chip, And Then The Sound Signal Is Output. Composition: 10Pcs 1/4W 330R Resistor; 5Pcs Resistance 1/4W 10K; 4Pcs Ceramic Capacitor 10Pf/50V; 1Pc Monolithic Capacitor 104/50V; 1Pc Crystal Oscillator 32.768Khz 6Pf; 2Pcs Touch Button 6*6*13; 1Pc Thermistor Ntc-Mf52at 10K; 1Pc Photoresistance 5516; 1Pc Battery Cr1220; 1Pc Battery Casing Cr1220; 1Pc Ic Ds1302; 1Pc Single Chip Microcomputer Stc15w408as (Good Program); 1Pc Ic Block Dip-28 Square Narrow Body; 1Pc Buzzer 5V Active; 1Pc Mini Usb Vertical 5Pin; 1Pc Transistor S8550; 15Pcs Led Red Hair Red; 55Pcs Led Blue Hair Blue; 1Pc Digital Tube 5643Bs., Neutral Flux-Gel Nc-559-Asm Type Soldering Flux Product Weight, G 20 Units Per Product 1 Diameter, Mm 20 Color Light Yellow, Double-Sided Mounting Plate 9X15 Cm, Pitch 1.27 Mm Material: Double-Sided Foil Fiberglass. Contact Distance: 1.27Mm Thickness: 1.5Mm, Dc-Dc Boost Name: 600W Boost Module Input Voltage: 12V - 60V Output Voltage: 12V - 80V, Continuously Adjustable Input Current: Max.--15A Output Current: Max--10A (Adjustable) Conversion Efficiency: Up To 95% (Input Voltage, Current; Influence Of Output Voltage And Current On Conversion Efficiency) Short Circuit Protection: Fuse Operating Temperature: -45°C~+85°C Application: 1. Create A Regulated Car Power Supply. Simply Connect A 12V Power Supply To The Input Jack, And The Output Voltage Can Be Continuously Adjusted Between 14V And 80V. However, The Output Voltage Should Not Be Lower Than The Input Voltage. 2. Universal Car Power Supply Compatible With Laptop. The Input Is Connected To The 12V Power Supply, And The Output Can Adjust The Voltage Required To Ensure Stable Operation Of The Laptop. 3. Charger. The 12V Power Supply Can Be Used Compatible With Charging Batteries With Voltages Higher Than 12V, Such As 20V. The Charging Current Is Adjustable. Color: Green And Black Material: Plastic+Metal Package Contents: 1 X 600 W Dc-Dc Boost Module, Gasoline Solvent Galosh, Nefras S2-80/120, 5 L Nefras S2-80-120 Quickly Dissolves Organic Compounds, Evaporates Quickly, And Is Characterized By Corrosive Aggressiveness. This Solvent Is Used In The Production Of Adhesives And In The Rubber Industry For The Production Of Belts And Pipes. It Is Also Used In The Production Of Printing Inks, Mastics, For Degreasing Electrical Equipment, Fabric, Leather, And For Washing Bearings And Fittings. Nefras Is Indispensable For Diluting Oil, Bitumen, Ethinol Paints And Varnishes That Were Used In The Optical Industry. Nefras C2 80-120 Can Be Used As Fuel For Catalytic Heating Pads And Gasoline Blowtorches. Precautions: • In Case Of Contact With Skin, Wash With Warm Water And Soap. • Carry Out Work In A Well-Ventilated Area. • Keep Away From Various Heat Sources And Electrical Devices, Avoiding Direct Sunlight. Specification: • Type: Solvent; • Boiling Limits: From 80°C To 120°C; Volume: 500 Ml., 1800W 40A Boost Power Supply Module • Output Power: 1800 W; • Input Voltage Range: 10-60 V; • Output Voltage Range: 12 - 90 V • Input Current: 40A; • 0 Output Current: 22 A, • Conversion Efficiency: 48V To 60V 8A (98.1%), 48V To 72V 8A (98.1%), 48V To 84V 8A (97.6%); • Charge Adjustment: From 10% To 50% Charge (72 V Output). • Temperature Coefficient: 50% Load • Ripple And Noise: 20 Mhz Bandwidth (4 V, 72 V, 4 A), 100 Mv (P-P; • Switching Frequency: Vin=48V0=72V 4A (110 Khz); • Open Circuit Current: Vin=48 V0=72 V (18 Ma): • Reverse Entry Protection: Yes; • Storage Humidity: 95%; • Opening Temperature: -20~65 • Storage Temperature: -40~125 ; • Operating Temperature Increase: 48 V To 60 V, 5 A(45 ): • Overheat Protection: 60 ; • Output (Soldering-Free, Terminal Block • Connection Method: Input, • Cooling Method: Strong Air Cooling. • Power Boost Module 1200 W, 20 A • Input Voltage: 8-60 V • Input Current: 20A • Quiescent Current: 15Ma (12V Liter 20V, The Higher The Output Voltage, The Higher The Current Will Increase Too Quietly) • Output Voltage: 12-80 V, Continuously Adjustable. • Output Current: 20A Max. More Than 15A, Please Improve Heat Dissipation (Input, Output Pressure, The Greater The Pressure, The Smaller The Output Current) Constant Range: 0.5 - 20 A, Soldering Kit Electronic Clock - Alarm Clock At89c2051 Kit For Self-Assembly Of Electronic Watches Based On At89c2051. Supply Voltage: 3-6V. The Circuit Consists Of A Microprocessor With Minimal Wiring, A Control Circuit, And An Output Circuit Display, Sound Indication Circuit And Power Supply Circuit. 1. The Microprocessor Part Includes U1 (At89c2051), C1, R1 For Initial Reset And Starting The Microprocessor. The Clock Generator Is Assembled On C2，C3 And Y1. 2. The Input Circuit Consists Of Two Buttons S1 And S2. After Each Press Of The Button, A Sound Is Heard In The Speaker. Single, And When Held, Double Beep. 3. The Indication Circuit Consists Of A 4-Digit Seven-Segment Indicator With A Common Cathode Ds1 And Resistive Assembly Pr1. 4. The Audio Circuit Consists Of Q1, R2 And Ls1. 5. The Supply Voltage Is Supplied Through Connector J1 With A Filter Connected In Parallel Capacitor C4., Programmer St-Link V2 For Stm32/Stm8 Programmer Debugger St-Link V2 Mini For Stm8/32. Connection To A Computer Is Via A Usb Port. Features: • Stm32 Swd Support; • Support For Stm8 With Swim Debugging Interface; Supports Software: • St-Link Utility 2.0+; • Stvd 2+; • Stvp 3.2.3+; • Iar Ewarm V6.20+. • Iar Ewstm8 V1.30+. • Keil Rvmdk V4.21+. • Supports Automatic Firmware Update. • Increased Output Signal Power. • Protective Aluminum Housing Is Resistant To Static Electricity; • Step2.54.