Microcontroller Counter Kit STC90C52 NE555 Timer LED Display 5V-6V DIY Electronics Kit Precision Counting Circuit Complete Components Soldering Practice STEM Learning Educational Project
Direct purchase from the factory 
Garantisadong Ligtas na Checkout
Libreng Regalo
Patakaran sa Pagpapadala
Patakaran sa PagbalikLibreng Regalo
Welcome to Roymall, your professional website for purchasing premium department store gifts. We highly value and appreciate your support, and we want to express our gratitude by adding an extra touch of excitement to your purchases. When you shop with us, you not only get to enjoy high-quality products that enhance your lifestyle, but you'll also receive an exclusive free gift with every order you place. Ready to explore our collection and find your perfect gifts? Browse our selection of premium department store items, place your order, and look forward to the excitement of your free gift arriving alongside your purchase.Patakaran sa Pagpapadala
We will work hard to deliver items to you after receiving your orders and make sure they arrive safely. Delivery details will be provided in your confirmation email.In most cases, orders are processed within 2 days.Under special circumstances, it will be delayed as follows: When you place an order on Saturday, Sunday or public holidays, it will be delayed for 2 days..Normally, it needs 5-7 working days (Monday to Friday) without being affected by flight delay or other environmental factors..Because our shipping service is worldwide so the delivery times will depend on your location so it may need a few times and please wait patiently if you are in remote districts or countries.1. Patakaran sa Pagbalik at Pagpapalit
We only accept items purchased from roymall.com. If you purchase from our local distributors or other retailers, you cannot return them on our side. Final sales items or free gifts are not acceptable for a return. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.After receiving return instructions from us, please package up your returned items and drop your package at the local post office or another courier.We will process your return or exchange item within 3-5 working days after we receive it. The refund will be processed and credited automatically to your original method of payment.No returns or exchanges can be accepted if the product was custom produced, including custom size, custom color, or custom printed.Need more help, please contact us. service@roymall.com or Whatsapp: +8619359849471
2.Patakaran sa Refund
You'll get a full refund or 100% store credit after we receive the returned package and check it. The refund will be processed and credited automatically to your original method of payment. Please note that shipping costs and any duties or fees are not refundable. The extra shipping costs are non-refundable once the package has been shipped. You are responsible for paying these fees and we’re unable to waive or refund them, even if the order is returned back to us.Once we received and confirmed your returned item, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.If you have any problems regarding the refund process, please contact us. service@roymall.com or Whatsapp: +8619359849471Product Name: Microcontroller-Based Counter Kit
Circuit Board Dimensions: 82mm x 57mm
Operating Voltage: DC 5V-6V
Main Chip: STC90C52 Microcontroller
Display: Single-digit LED display with integrated counting functionality
Note: This is a DIY kit, you need to solder and assemble it.
Features:
1. Precise Counting Functionality: Features a microcontroller-based design for reliable and accurate count increments.
2. Four-Button Control System: Includes Reset, Start, Pauses, and Clear buttons, enabling intuitive operation.
3. Easy Assembly: Components and circuit layout are clearly marked, ideal for electronics hobbyists and DIY applications.
4. Collaborative Design: Uses NE555 timer and STC90C52 microcontroller for enhanced performance in counting circuits.
5. Compact Layout: Small PCB footprint for integration into other electronic projects or standalone usage.
Package Include:
3x 100 Direct-insert Resistors
3x 10K Direct-insert Resistors
4x 1K Direct-insert Resistors
2x 30p Ceramic Capacitors
1x 104/0.1uF Ceramic Capacitors
1x 12M Crystal Oscillators
1x 10uF Electrolytic Capacitors
1x 47uF Electrolytic Capacitors
1x 5mm Green Light-emitting Diodes
1x 1N4007 Diode
2x 9014/EBC Transistors
1x STC90C52 MCU Chip
1x DIP40 Chip Holder
1x NE555 Integrated Chip
1x DIP8 Chip Holder
1x Red Two-digit Digital Tubes
4x 6*6*6 Micro Switch Buttons
1x 6P/2.54 Pin Header
1x 82*57 Circuit Board
