GeekLJT 4 Digital DIY Electronic Voice Clock Kit Instruction Manual

: May 15, 2024
: GeekLJT

Table of Contents

GeekLJT 4 Digital DIY Electronic Voice Clock Kit
Introduction
Product
Function Demo
Setting Instructions
Application
Component Listing
Schematic Diagram
Installation Steps
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GeekLJT 4 Digital DIY Electronic Voice Clock Kit

Introduction

LED Digital Electronic Clock Production Kit

Digital tube display
Voice broadcasting
Time/ date /temperature display
Alarm Clock
Light control

Product

parameter	value
Name	LED Digital Electronic Clock Production Kit
Size(installed)	120mm29mm90mm
Size(pcb)	97mm*35mm
Work Voltage	DC4.5-5.5V
Work Temperature	-30℃~80℃

Function Demo

S1 – Function Key
S2 – Add Key
S3 – Function Key

Light control function
- Under the normal working state of the clock, press S2 (1~3 seconds) to
  turn off or on the light control function
Temperature/date display
- Under the normal working state of the clock, press S2 (3~5 seconds) to
  turn off or on the display of temperature and date
Turn off the Alarm Clock
- When the alarm sounds, press S1 (1~3 seconds) to turn off the
  alarm
Voice reporting
- Press S1 for voice reporting of time, temperature and date

Setting Instructions

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $2$$

1st Press S3
Time position flashing, °C static; Press S2 to adjust.

5th Press S3
Time position flashing, Press S2 to adjust.

9th Press S3
Switch setting: (AON)on/(AOFF) off, press S2 to switch.

10th Press S3
Hour: blinking, press S2 to adjust.

11th Press S3
Minute: minute flashing, press S2 to adjust.

12th Press S3
Alarm setting: V00/V01. press S2 to adjust. “Colon blinks normally

Reset
Press and hold S2 key and S3 key for 10~15s at the same time. Then the horn rings, press the S1 key to stop ringing.

Date Setting

2nd Press S3
Year: 2014 Initially, press S2 to adjust.

3rd Press S3
Month: time flashes, press S2 to adjust.

4th Press S3
Date: minute flashes, press S2 to adjust.

Time Setting

6th Press S3
Year: 2014 Initially, press S2 to adjust.

7th Press S3
Month: time flashes, press $2 to adjust.

8th Press S3
Date: minute flashes, press S2 to adjust.

Voice Reporting Setting

13th Press S3
Switch setting: (CON)on/(COFF) off, press S2 to switch.

14th Press S3
Start time: time flashing, press S2 to adjust.

15th Press S3
End time: minute flashing, press S2 to adjust.
Ex: 07:17 means 07:00~17:00 for whole-time reporting.

Application

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $3$$

Component Listing

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $4$$

No	Name	PCB Marker	Quantity
1	Metal Film Resistor 4.7kΩ	R11,R12,R13	3
2	Metal Film Resistor 510Ω	R1,R2,R3,R4,R5,R6,R7,R8	8
3	Metal Film Resistor 10kΩ	R9,R10	2
4	Speaker		1
5	Thermistor	NTC	1
6	Photoresistors	LDR	1
7	Battery Holder	BAT	1
8	Black Button	S1,S2,S3	3
10	Power Socket	DC-IN	1
11	Ceramic-Cap 22pf	C4,C5	2
12	Ceramic-Cap 104pf	C1,C2,C3	3
13	Voice Chip		1
14	Voice Chip Holder	NY3P	1
15	Chip DS1302		1
16	Chip DS1302 Holder	DS1302	1
17	Chip STC		1
18	Chip STC Holder	STC	1
19	Crystal 32.768	XTAL	1
20	E-cap (Random capacitance)	C6	1
---	---	---	---
21	Digital Tube Display		4
22	PCB		1
23	Acrylic Shell		6
24	Screw		~
25	Nut		~

Schematic Diagram

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $5$$

Installation Tips

Before installation, users need to prepare the welding tools in advance.
The installation process requires enough care and patience.
Be sure to read through the installation instructions before starting the installation.
Welding sequence: components from high to low
In order not to damage the components, the soldering iron should not touch the components for too long.
Pay attention to the positive and negative markings on the peb, the long pin of the component is positive.
Ensure that similar components with different parameters are placed in the correct position on the PCB.
Wearing anti-static gloves or anti-static wristbands is better.
Ensure that components are not accessible to children.

Installation Steps

Step1
Install Resistor & Ceramic-Cap & Crystal 32.768
$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $6$$

Mark

Resistor : 4.7k2 – R11,R12,R13 || 5102 – R1,R2,R3,R4,R5,R6,R7,R8 10k≤2 – R9,R10
Ceramic-Cap : 22pf – C4,C5 || 104pf – C1,C2,C3
Crystal Oscillator: XTAL

Tips

Install components on the side of the word.
Welding sequence: components from low to high

Tips

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $7$$

Separate the two pins
Regardless of the positive and negative poles of the power supply

Step1: Install Resistor & Ceramic-Cap & Crystal 32.768

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $8$$

Tips

Welding at the root of the pin, the excess pins are cut off withthe diagonal pliers.
Do not rosin joint, do not weld more. $GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $9$$

Step2
Install Chip holder & Battery Holder

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $10$$

Marks

Voice Chip Holder: NY3P
Chip DS 1302 Holder : DS1302
Chip STC Holder: STC
Battery Holder: BAT

Tips

The red mark is the direction.
The black mark is the two-point of the welding of the battery seat.

Step3
Install E-cap & Black Button & Power Socket

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $11$$

Marks

E-cap: C6
Black Button: S1,52,53
Power Socket: DC-IN

Tips
First, insert the first solder, then insert the second, then the third.

If the power socket plug is crooked, it can be straightened and welded again.
The point solution capacitor pin has long pins and short pins, the long pin is the positive pole, and the short pin is the negative pole of the power supply.
The circuit board is marked with the positive pole of the power supply.

Step4
Install Thermistor & Photoresistors & Speaker

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $12$$

Tips

First welding the circuit board front two welding points to fix it, then welding the other side, two solder joint strengthening.
o not make the line messy, otherwise, it will affect the sound quality.
It’s better to weld on both sides of the copper sheet.

Step5
Install Chips and Battery

Tips

There are currently two types of voice chips, for the first type (Red Circle 1) can be inserted directly into the holder(NY3P)
For the second type(Red Circle 2), before inserting it into the holder it is necessary to insert the short side of the two single-row pins from the back of the chip to the chip, and solder from the front side to the fix.
There is a notch on one end of the chip holder and a mark on the PCB on which the chip can be placed. These two markings correspond to each other and are used to specify the mounting orientation of the chip.

Step6
$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $15$$
Install Digital Tube Display

Step7
Apply plastic film to the display

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $16$$

Tips

There is a transparent film on the bright side, and it can be posted on the digital tube when it is torn off.
After the film is bonded, the excess edges are cut off with blades.

Step8
Fix the speaker
$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $17$$

Step10
Install the acrylic shell

Tips

Before starting the installation, don’t forget to tear off all the protective film on the acrylic shell
Install the acrylic back shell, and fix the shell with short screws, nuts and copper posts. The order is a screw, housing, nut, and brass post.
Install a “Y”-shaped decorative shell on the shell of the back piece

Step10
Install the acrylic shell

$GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $21$$

Tips

Place the voice clock with the speaker secured on the back shell.
Above the front side of the display is the front $GeekLJT-4-Digital-DIY-Electronic-Voice-Clock-Kit-FIG- $22$$
Install sequence: Back >> Top >> Bottom >> Right >> Left >> Front
Install the front acrylic shell, fixwithscrews.