1pcs New C51 Electronic Clock Suite Electronic Diy Kits

US $140

LongGang District, Shenzhen City, China
Jan 29th

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General Interest Hot Products 1/8" Inch Plastic Electric Air Gas Water Solenoid Valve Normally Closed 12V DC $11.84 25W High Power LED Light Lamp SMD Chip 2300LM White 32-34V $3.15 Mega 2560 ATmega2560-16AU Board (Arduino-compatible) + Free USB Cable Funduino $16.25 4010S 40mm x40mm x10mm Brushless DC Cooling Fan $1.80 Prototype Board Electronic Deck 400 + 65pcs Breadboard Jumper Cable $4.35 20 sets NEW 3 pin connector kit Connector Lead Header 2.54mm XH-3P Kit $1.72 16mm Start Horn Button Momentary Stainless Steel Metal Push Button Switch?Blue? $4.10 C51 Electronic Clock Suite Electronic DIY Kits Similar Products for Recommendation ??? 1pcs NEW PCK-4 Red 1\" 4-Bit Clock DIY Module DIY Kit 1-inch Digital Tube NE555 Duty Cycle and Frequency Adjustable Module DIY Kit Pulse Generator LM317 Step Down DC 5V-35V to 1.25V-30V Kit DIY AC/DC Power Supply Module High Speed Digital MG995 Metal Gear 2BB Torque RC Servo for Savage XL FUTABA HPI DIY Kit Mobile Phone Signal Flash Light Radiation Power NEW NEW TDA7297 Version B 2*15W 2x15W Audio Amplifier Board Dual-Chann?el AC/DC 12V 1pcs NEW LM317 Adjustable Regulated Power Supply Suite DIY Kits 1 Set 3D LightSquar?ed DIY Kit 8x8x8 3mm LED Cube White LED Blue Ray YCL-6 multi-functional electronic bell. In addition to the general features include electronic clock, especially increasing alarm clock function, stopwatch function, countdown function and counter functions. AT89C2051 resources are fully utilized. PCB Dimensions: length 92mm * wide 49mm YCL-6 makes the full use of the single-chip resources which is featured with the function of alarm clock, countdown clock, stopwatch and counter. 1. Principle of Operating The circuit is mainly composed by the single-chip circuit, display circuit, keyboard input, signal ringing circuit and power circuit. 1.single-chip circuit: It's based on AT89C2051 which including the Power-on Reset and clock circuit. 2. Display Circuit: The main component is 2-bit digital tube in red. The driver uses the PNP transistor and it's equipped with current-limiting resistance at every port. It's with scanning-driven way and uses P1.0~P1.6. The colon part use four pieces of diode in ?3 red with scanning-driven way. And it uses P1.7. 3. keyboard input: The key S1~S3 are with reused function which reused with the display part of P3.5?P3.4 and P3.2. And here is the operating principle. Output high level at the related PIN to read out the status of keys and debounce via single-chip system to give the keys with corresponding value. 4. Signal Ringing circuit: It's composed by buzzer and PNP transistor. And the operating principle is that the buzzer will send sound in fixed frequency after the PNP transistor turns on. It's with independent port-driven way and uses P3.7. J1 is used for connecting the extrocontrol equipments which will output the low level when there is no ringing signal, or high level with ringing signal. 5. Power Circuit: It's composed by three terminal integrated circuit which will supply the whole system with the stable voltage. 2. Operating Specification 1) Specification of function Keys S3 is for function choosing key , S2 for function expansion and the S1 for adding the value with one. 2)Operating It works well if all the components are welded in the right way. And the operating DC voltage is 7V--12V. Please be noted the polarity when connect the power. During the operation, below six functions can be chosen to work, if press the S3 continuously in a short time. And the interval is less than 1 second. Or it goes to the clock function if press the S3 for more than 2 seconds. Clock Function: It displays 10?10?00 when it's on. Time checking Function: The time and colon start flashing after Press the S3 for a short time. Press S2 to add one hour and Pree S1 to add 1 minute. But the second time is unadjustable. Alarming Function: It displays 22?10?00 and the colon lights after press S3 twice in a short time. Press S2 to add one hour and Pree S1 to add 1 minute. But the second time is unadjustable. When the value of hour is over 23:00pm, it displays ???????? which is the function for turn off the alarming function. Countdown Function: It displays O and the colon is in dark after press S3 three times in a short time. The hour time is added after pressing S2 and 1 minute is added after pressing S1. It'll start to countdown when press S2 for the sixth time. The time can be adjusted again after pressing S2 for one more time. And the countdown function is off. Stopwatch Function: It displays 00?00?00 and the colon lights after press S3 four times in a short time. It starts clocking with the stopwatch after pressing S2. And if press S2 one more time, the clocking will be end. And the stopwatch goes to reset status after pressing S1 at this time. Counter Function: It displays 00?00?00 and the colon is in dark after press S3 five times in a short time. Press S2 to add the value with one for counter and Pree S1 to let the counter in reset status. Circuit Diagram Material Download here! List of Components Wholesale to save you more money! 2PCS 1/8"Plastic Electric Air Gas Water Solenoid Valve Normally Closed 12V DC 5pcs 5V 1-Channel Relay Module with Optocouple?r H/L Level Triger for Arduino 5pcs NEW EM4305 125Khz Writable Rewrite RFID Tokens 10pcs HC-SR501 Infrared Pyroelectric Human Sensor Module 10pcs Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor For Arduino 5pcs TT Motor Intelligent Car Gear Motor Robot Gear Motor for Arduino 5pcs MAX7219 Dot Matrix Module Control Display Module Cascade DIY kit 2pcs NEW 5.5*2.1mm 9V Battery Holder Box Case Wire with Plug for Arduino HOT Category On sale _Wholesale_ __Combination__ ___Sensors_ _ICs & Processors_ _Arduino_ Cables & Connectors_ LCD Modules_ Power Modules _Switches_ _ Electrical Connectors_ Valves__ __ Car Fuse__ Wireless Modules Wireless Bluetooth Relay Modules Breadboards _PCB Boards____ __LED____ ____DIYs___ ___ Resistors _ SHIPPING PAYMENT RETURNS FEEDBACK ABOUT US Address: Please make sure your Paypal address is updated and accurate. All of your order(s) will be delivered to it. Ship to: We ship worldwide (except few countries). For USA buyer, we will send by ePacket delivery. For other customers, we will send your item by HongKong Airmail or Singapore Airmail without a tracking number. Estimated Delivery Time (Depends on holidays and Flight) : A) United States Canada Australia United Kingdom New Zealand: 2-3 weeks B) Israel Thailand Malaysia Singapore Sri Lanka Indonesia India Maldives Greece Armenia Azerbaijan Republic Kazakhstan Saudi Arabia United Arab Emirates: 2-4 weeks C) Italy Spain Turkey South Africa Fiji Puerto Rico: 4-5 weeks. D) France Belarus Estonia Switzerland Germany Sweden Denmark Hungary Romania Croatia Bulgaria Latvia Cyprus Czech Mexico Austria Bosnia and Herzegovina Slovakia Lithuania Ukraine Egypt Poland Netherlands Malta Belgium Portugal Norway Finland Ireland : 2-4 weeks E) Russia Brazil Argentina Chile Mauritius All of the South American countries: 5-8 weeks F) Other countries: not more than 30 business days Handling Time: 1-2 working days after payment is completed. Tracking Number: 1. Order exceeds $50 will be shipped with a tracking number. 2. For order under $50, and you still need a tracking number, please contact us. Parcel Lost: Less than 0.5 percent parcels may be lost in shipment. But don't worry, we'll take good care of it. We Only Accept Paypal on Ebay. For specific requirements, please feel free to contact us. If you are facing with troubles below, please contact us as soon as you can Defective or Wrong: full refund or send you a new replacement Missing: new package arranged, or partial refund Dislike: full refund after we received your item (buyer undertakes return shipping fee) Consumers' satisfaction is our first priority and pursuit . We promise to solve your problem in a good way . We consider neutral and negative feedbacks as a SHAME. So please never give us a neutral or negative feedback before communicating with us . Our working time is 08:30-17:30 from Monday to Friday in Beijing Time. Because of the time difference, we may not reply your email immediately. All emails will be replied in 24 hours, please understand that. We devote to making the best service for you. We look forward to serving you. Any questions, please contact us via our ebay email. Your emails are warmly welcomed. 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