4 bit digital electronic clock chip DIY
  • 4 bit digital electronic clock chip DIY

4 bit digital electronic clock chip DIY

JOMYFT_clock_kit
lei18.15
Tax included
Quantity
18 Items

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Description

Features

Special red digital clock for display;
AT89C2051 master chip;
1.2mm thick PCB made from FR-4 board;
time error range -1 to +1 seconds every 24 hours.
Supply with 5V

Functions

Second corrections
Iterface: hours/minutes or minutes/seconds
ON/OFF alarm sound
Two alarm settings (you can turn off the alarm function)

Components

 

Name

Specification

Quantity

Identifier

0.25w resistance

4.7K

5

R1.R3-R6

Exclusion

470*9

1

R2

electrolytic capacitor

10uf

1

C1

 

100UF

1

C4

ceramic capacitor

30p

2

C2, C3

 

104

1

C5

diode

IN4007

2

D1, D2

Nixie tube

0.4"

1

DS1

crystal oscillator

12HMz

1

T1

key switch

6*6

2

S1, S2

audion

8550

1

Q1

singlechip

AT89C2051

1

V1

socket

DIP20

1

 

buzzer

5V

1

V2

terminal

KF126-2P

1

J1

circuit board

 

1

 

Schematic diagram

QIUx1lcdR6FLLypp0rhhsVeIUZoVTHkKcpt0NvsQ

You can find in "Download" section the instructions manual. Regarding to assembly, you have footprints of components on PCB.

Product Details
JOMYFT_clock_kit
6427854014085
18 Items
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