5 X C51 4 Bits Digital Electronic Clock LED Production Suite DIY Kits Module Kit

Description: Store category Sign Up Now ! You may also like 5 X C51 4 Bits Digital Electronic Clock LED Production Suite DIY Kits Module Kit Product Description Description:4bits digital clock is a fun electronic soldering DIY kit. Its equipped with the 0.56" 4 digits LED. It is great for you to train electronic knowledge and soldering skills during assembling components. Once finished, it will be a digital alarm clock with seconds correction, hourly chime function and so on. It is very perfect for soldering project and school electronics learning. Warm Tip: Clock DIY kits are 24-hour display format, accurate travel time, the error range 1 sec every 24 hours, supporting seconds correction, hourly chime function and twice alarm clock setting. Schematic as below picture. Principle The whole system by MCU minimum system, key input circuit, display circuit, buzzer circuit, and power supply parts.1>. MCU minimum system: including the U1 (STC11F02E), C1, R1 for power-on reset circuit. The clock circuit is composed of C2, C3, and Y1.2>. The pressed key input circuit: composed of S1, S2, short press the button once a loud buzzer rang, long-press the button once two loud buzzers rang.3>. The display circuit: 4bits common cathode and on PR1 Resisters Packs.4>. Buzzer circuit: composed of Q1, R2, and LS1, short press the button once a loud buzzer rang, long-press the button once two loud buzzers rang.5>. J1 is a 5v power supply input terminal, C4 filtering.Notice please: there is the direction for PR1 Resisters Packs, there is one side of the word in the direction of the MCU. Installation Steps: Step 1: Install 2pcs Resistor, 3pcs ceramic capacitor, 1pcs Crystal Oscillator.Step 2: Install 1pcs Network Resistor. Pay attention to the installation direction.Step 3: Install the IC Socket. But pay attention to the installation direction.Step 4: Install the 2pcs button. But pay attention to the installation direction. Install 1pcs S8850.Step 5: Install 1pcs Power socket; 1pcs Electrolytic Capacitor; 1pcs Buzzer.Step 6: Install 4Bit Digital Tube and IC. And then test! Payment Shipping Policy Return Policy About us Contact us Payment 1.All payments must be prepaid.2.We only accept payment via Paypal.Please kindly check if you can do the payment via paypal before placing an order. Shipping Policy 1. We are not responsible for undeliverable address, we reserve the right to charge the shipping fee again for returned items due to wrong address.2. We will ship out your package by China post as soon as possible, it usually takes around 7-14 business days (USA, CA, AU, UK), others country takes around 10-20 business days (Brzil, India, RU), exact delivery time depends on postal process.3. If you do not receive your item by 30 business days, Please feel free to contact us via ebay mail system, we will try our best to resolve any problems with you.4. 4. the import tax/duty is the buyers responsibility, not included in the price and the shipping fee. It is charged by the custom of your country.(Pls note, business days means Sat. & Sun. excluded) Return Policy 1. We offer 30 days money back guarantee return policy .2. Our warranty does not extended to any products that are physically damaged or that are not under normal operating conditions as a result of misuse or improper installation on the buyer/users part.3. For all returned products, buyers MUST contact us for the returning address.4. In all cases, buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements. Refund will be made upon receipt of the returned item. About us We have office and warehouse in Australia and US to ensure fast shipment and after-sale service.We have more than 50 employees devoting to customer satisfaction.And more brands will be show in our store in near future. Contact us Our customer-oriented service strives for positive feedbacks with all 5 star selling ratings. Please feel free to contact us via eBay message once you have any question before you giving us negative feedback or open case. We will reply in 24 business hours. Business time: GMT8 (9:00-18:00) from Monday to Friday

Price: 39.59 USD

Location: Shenzhen

End Time: 2024-12-07T07:15:56.000Z

Shipping Cost: 2.99 USD