AT89C2051 LED Clock Assembly Kit

₱1,049.00
+ ₱323.49 Shipping

AT89C2051 LED Clock Assembly Kit

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AT89C2051 LED Clock Assembly Kit

₱1,049.00

Save ₱650.00 (38%)

RRP

₱1,699.00
In stock
+ ₱323.49 Shipping

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  • Brand: Unbranded
Product details

Product details

AT89C2051 LED Clock Assembly Kit

Physically compact at 75 × 50 mm, this kit uses a green-soldermask PCB with white silkscreen for high contrast and durability across multiple student cohorts. Components include the AT89C2051 microcontroller (pre-programmed), four red 7-segment LED modules (common-anode), 11.0592 MHz HC-49/S crystal, 22 pF ceramic load capacitors, 10 kΩ potentiometer for optional contrast adjustment (though not used in default config), two 4.7 kΩ pull-up resistors for buttons, four 2N3904 transistors for digit selection, and 330 Ω current-limiting resistors per segment. Total bill of materials contains 28 discrete components — deliberately scoped to avoid overwhelm while covering all essential categories (logic, timing, interface, power). Operation follows a deterministic sequence: power application triggers firmware initialisation; internal timer begins counting; display multiplexing starts immediately; button presses generate external interrupts handled in dedicated ISR routines. Timekeeping resolution is 1 second; display update rate is ~200 Hz. No serial interface or debug port is exposed — encouraging reliance on visual output and systematic testing instead of console logging. Designed for scaffolded instruction, the kit supports tiered learning: Level 1 focuses on mechanical assembly and safety; Level 2 adds continuity and voltage testing; Level 3 introduces firmware analysis via provided assembly listing; Level 4 invites modification (e.g., changing time format or adding debounce delay) using freely available 8051 toolchains — creating a natural progression from consumer to creator.
  • Fruugo ID: 554635285-1121395600
Safety

Product Safety Information

Please see the product safety information specific to this product outlined below

The following information is provided by the independent third-party retailer selling this product.

Safety Warnings: Warning to keep away from water to prevent electric shocks.
Ingredients: Other

Product Compliance Details

Please see the compliance information specific to this product outlined below.

The following information is provided by the independent third-party retailer selling this product.

Manufacturer
The following information outlines the contact details for the manufacturer of the relevant product sold on Fruugo.

  • Yang Yue
  • Lixian Penghui Trading Co., Ltd.
  • Group 5
  • Renhe Village
  • Changde City
  • CN
  • 415500
  • [email protected]
  • 1(319)277-0024

Responsible Person in the EU
The following information outlines the contact information for the responsible person in the EU. The responsible person is the designated economic operator based in the EU who is responsible for the compliance obligations relating to the relevant product sold into the European Union.

  • eVatmaster Consulting GmbH
  • eVatmaster Consulting GmbH
  • RaiffeisenstraBe 2 B11
  • Rodgau
  • DE
  • 63110
  • [email protected]
  • 49 61062699873
Delivery

Delivery

Dispatched within 3 days

  • STANDARD: ₱323.49 - Delivery between Wed 18 November 2026–Fri 27 November 2026

Shipping from China.

Returns

Returns

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