ICStation TJ-56-619 4-Bit Digital Electronic Clock DIY Kit Manual

1. Introduction

The TJ-56-619 is a 4-Bit Digital Electronic Clock DIY Kit designed to display the current date, time, and temperature in real-time. It features a dual alarm clock function, allowing users to set alarms as needed. The kit is characterized by its ease of operation and attractive design, making it suitable for home or office environments.

2. Features

• Four Display Modes: Time, Time/Temperature, Time/Date/Week/Year, or Temperature only.
• Automatic Brightness Adjustment: Includes a built-in photosensitive sensor for automatic brightness adjustment. Users can also manually set brightness levels from 1 to 15.
• Dual Alarm Clock: Supports two independent alarm clocks (Alarm1 and Alarm2), which can be enabled or disabled individually or simultaneously.
• Stopwatch: Functions to record minutes and seconds from the start.
• Countdown Timer: Allows setting a countdown timer with a maximum duration of 99 minutes and 59 seconds.
• Voice Hourly Report: The buzzer sounds five times on the hour to indicate the time.
• Temperature Calibration: The temperature reading can be calibrated for accuracy.
• Motor Vibration: Provides vibration feedback when buttons are pressed.
• Power-down Memory: Retains time and set parameters even after power loss, provided a CR1220 battery is installed.
• DIY Electronic Kit: Comes with various components requiring manual assembly, offering a practical learning experience for soldering skills and electronics interest. Ideal for hobbyists, beginners, and educational purposes.

3. Parameters

4. Setting Method

The clock operates with four buttons: S1, S2, S3, and S4. The primary display shows the current time (Hour:Minute).

• Press S1 to cycle through display modes: Month-Day, Week, Year, Temperature, Alarm1 time, Alarm2 time, Minute-Second.
• Press S2 to cycle through display modes: Time/Temperature, Time/Date/Week/Year, Temperature, Alarm1 time, Alarm2 time, Minute-Second.
• Press S3 to cycle through display modes: Time/Date/Week/Year, Temperature, Alarm1 time, Alarm2 time, Minute-Second.
• Press S4 to turn the screen ON or OFF (Sleep Mode).

4.1. Entering Set Mode

Keep pressing the S1 button for approximately 3 seconds to enter the set mode.

4.2. Navigating Set Modes (Fu-1 to Fu-7)

• Short press S2 or S3 to switch between set modes (Fu-1 to Fu-5, Fu-6, Fu-7). The corresponding number will flash.
• Short press S4 to select the current mode for parameter adjustment. The selected parameter will flash.
• Short press S1 to cycle through parameter values within the selected mode.
• Press S4 again to save the current parameter and exit the set mode.

4.3. Fu-1 Mode: Set Time (Hour:Minute)

• After entering Fu-1, the Hour will flash. Use S2/S3 to adjust the Hour.
• Short press S1 to switch to Minute adjustment. Use S2/S3 to adjust the Minute.
• Press S4 to save and exit.

4.4. Fu-2 Mode: Set Date (Month, Day, Year)

• After entering Fu-2, the Month will flash. Use S2/S3 to adjust the Month.
• Short press S1 to switch to Day adjustment. Use S2/S3 to adjust the Day.
• Short press S1 again to switch to Year adjustment. Use S2/S3 to adjust the Year (2000-2099).
• Press S4 to save and exit. The Week is calibrated automatically based on the date.

4.5. Fu-3 Mode: Set Alarm-1 Time (Hour:Minute)

• After entering Fu-3, the Hour for Alarm-1 will flash. Use S2/S3 to adjust. Setting the Hour to '24' disables the alarm.
• Short press S1 to switch to Minute adjustment. Use S2/S3 to adjust the Minute.
• Press S4 to save and exit.

4.6. Fu-4 Mode: Set Alarm-2 Time (Hour:Minute)

The setting method is identical to Fu-3 Mode.

4.7. Fu-5 Mode: Set Hourly Report, Display Mode, Brightness

• This mode uses four digits for settings: First digit for Hourly Report, second for Display Mode, last two for Brightness.
• Set Hourly Report: Default is ON/OFF. Use S2/S3 to toggle between '1' (ON) and '0' (OFF).
• Set Display Mode: Short press S1 to select the second digit. Use S2/S3 to cycle through modes:
  • '0': Display time only.
  • '1': Display time, then temperature for 1 second every minute.
  • '2': Display time, then date (1 sec), week (1 sec), year (4 sec) at intervals.
  • '3': Display temperature only.
• Set Brightness: Short press S1 to select the last two digits. Use S2/S3 to cycle through brightness settings:
  • 'A': Automatic brightness adjustment.
  • '1' to '15': Fixed brightness level, '15' being the brightest.
• Example: '1315' means Hourly Report ON, Display Mode '3' (temperature only), Brightness level '15'.
• Press S4 to save and exit.

4.8. Fu-6 Mode: Set Motor Vibrate

• This mode uses three digits: First digit for Motor Vibrate ON/OFF, last two are reserved ('33').
• Default is ON/OFF. Use S2/S3 to toggle between '1' (ON) and '0' (OFF).
• Press S4 to save and exit.

4.9. Fu-7 Mode: Calibrate Temperature

• Use S2/S3 to adjust the calibration value.
• Press S4 to save and exit.

5. Stopwatch Function

• From the normal time display, keep pressing S2 for about 3 seconds to enter the Stopwatch interface.
• Short press S2 to start or pause the stopwatch.
• Short press S1 to clear the stopwatch (only when paused).
• Keep pressing S3 for about 3 seconds to exit the Stopwatch function.

6. Countdown Function

• From the normal time display, keep pressing S3 for about 3 seconds to enter the Countdown interface.
• Short press S1 to switch between the digits to be set (e.g., Minutes, Seconds).
• Use S2/S3 to change the value of the selected digit. The maximum settable time is 99:59 (M:S).
• Short press S4 to start the countdown.
• Keep pressing S2 for about 3 seconds to exit the Countdown function.

7. Sleep Mode

• From the normal time display, short press S4 to turn the screen ON or OFF.
• Note: The internal circuit continues to operate normally in Sleep Status.

8. Notes

• When the power is turned on for the first time, garbled characters may be displayed. Settings must be completed for correct display.
• Example query displays: '143.5' for Alarm-1 set at '14:35'; '1029.' for Alarm-2 set at '10:29'.
• The CR1220 battery is solely for powering the clock chip to maintain accurate time.

9. Component Listing

Note: Users can complete the installation according to the PCB silk screen and component list.

10. Application

• Practical for home use.
• Suitable for indoor display.
• Simple appearance, ideal for office environments.
• Can serve as wall decoration.

11. Installation Tips

• Ensure you have the necessary soldering tools before starting.
• Patience is required throughout the installation process.
• This is a DIY kit; assembly must be completed by the user.
• Avoid prolonged contact between the soldering iron and components (max 1 second) to prevent damage.
• Pay close attention to the polarity (positive and negative) of components.
• Strictly prohibit short circuits during assembly.
• It is recommended to install complex components first.
• Verify that all components are correctly oriented and placed on the PCB.
• Use anti-static gloves or wristbands when handling electronic components.
• It is highly recommended to read the full installation manual before beginning assembly.

12. Installation Steps

The following describes the assembly process based on the provided visual guides. Users should refer to the PCB markings and component list for precise placement.

Step 1: Install STC15W404AS (U3)

Install the SOP-16 STC15W404AS component at the U3 position on the PCB. Align the white gap on the PCB silk screen with the mark (dot) on the IC to ensure correct orientation.

Step 2: Prepare for Soldering STC15W404AS

Apply solder to one pad on the PCB. Use tweezers to hold the STC15W404AS component in place on its corresponding pads (U3) while soldering the first pad. This secures the component.

Step 3: Align and Solder STC15W404AS Pins

Carefully align all pins of the STC15W404AS with their respective pads on the PCB. Once aligned, solder the pins. A method for neat soldering involves applying a generous amount of solder to cover all pins and pads, ensuring good contact. Excess solder can then be removed using a solder sucker or desoldering braid.

Step 4: Install TP5400 Charging IC (U1)

Install the SOP-8 TP5400 Charging IC at the U1 position using the same soldering method described in Step 3.

Step 5: Install DS1302 Clock IC (U2)

Install the SOP-8 DS1302 Clock IC at the U2 position using the same soldering method.

Step 6: Install S9012 Transistors (Q1, Q2)

Install the two SOT-23 S9012 Transistors at the Q1 and Q2 positions.

Step 7: Install Capacitors

• Install one 10uF 0805 SMD Capacitor at C8.
• Install two 0.1uF (104) 0805 SMD Capacitors at C1 and C7.
• Install two 22pF 0805 SMD Capacitors at C3 and C4.
• Install two 22uF 0805 SMD Capacitors at C5 and C6.

Tip for capacitors: Apply tin to one pad, hold the capacitor with tweezers, fix it to the pad, then solder the second pad.

Step 8: Install Resistors

• Install one 0.33ohm 0805 SMD Resistor (R330) at R1.
• Install one 1.2Kohm 0805 SMD Resistor (122) at R3.
• Install two 10Kohm 0805 SMD Resistors (103) at R12 and R13.
• Install three 1Kohm 0805 SMD Resistors (102) at R2, R10, and R19. Note that R10 and R19 are on the reverse side of the PCB.
• Install nine 330ohm 0805 SMD Resistors (331) at R4 through R9, R11, R14, and R15.

Step 9: Install LEDs (D2, D3)

Identify the negative pole of the LEDs (marked with a green line on the front or a cut corner on the PCB silk screen). Install two 0805 Red LEDs at D2 and D3, ensuring the negative pole of the LED matches the negative pole marking on the PCB.

Step 10: Install SMD Inductor (L1)

Install one 10uH SMD Inductor at L1. This component does not have polarity.

Step 11: Install Diode (D1)

Install one 1N5819 Diode SS14 at D1. Pay attention to the correct installation direction.

Step 12: Install CR1220 Battery Socket (BT1)

Install the CR1220 Battery Socket at BT1.

Step 13: Install Electrolytic Capacitor (C2)

Install one 220uF 0805 Electrolytic Capacitor at C2. Note the correct installation direction (polarity).

Step 14: Install Active Buzzer (B1)

Install the Active Buzzer at B1. Pay attention to the correct installation direction.

Step 15: Install Crystal Oscillator (Y1)

Install the 32.768KHz Crystal Oscillator at Y1.

Step 16: Install Vibrating Motor (M1)

Install the Vibrating Motor at M1. This component does not have polarity. It can be attached directly to the STC15W404AS.

Step 17: Install Photoresistor (R17)

Install the GL5516 Photoresistor at R17.

Step 18: Install Thermistor (R18)

Install the 10K NTC Thermistor at R18.

Step 19: Install Power Socket (DC1)

Install the 3.5*1.2mm DC-002 Power Socket at DC1.

Step 20: Install Digital Tube (DS1)

Install the 0.8in 4-Bit Red Digital Tube at DS1. Ensure correct orientation, paying attention to the decimal point position.

Step 21: Install Lithium Battery Box (BT2)

Install the 14500 Lithium Battery Box at BT2. The positive pole should be oriented towards the DC-002 power socket.

Step 22: Install Buttons (S1-S4)

Install the four 6*6*9mm SMD Buttons at positions S1 through S4.

Step 23: Install CR1220 Battery

Install the CR1220 Battery into its socket (BT1). Ensure the screen side faces upwards.

Step 24: Connect Power

A 14500 lithium battery can be placed in the battery socket (BT2). Alternatively, a USB cable can be used to provide the working power supply if the battery is not installed.

Step 25: Assemble Acrylic Casing

• Remove the protective film from the black acrylic surfaces.
• Attach the 2pcs M3*20+6mm Copper Pillars to the PCB using 2pcs M3 Nuts.
• Fix the acrylic base plate using 2pcs M3*6mm Screws.
• Attach the two larger side acrylic plates, ensuring correct orientation, using M2 Screws and Nuts.
• Attach the remaining two side acrylic plates using M2 Screws and Nuts.
• Secure the top acrylic plate using M2 Screws and Nuts.

Step 26: Final Setup

Connect the power supply and proceed to set the parameters as described in the "Setting Method" section.