Product name: multi-function digital clock kit

Product model: TJ-56-619

Working voltage: DC5V DC power supply (lithium battery charging)

Shell size: 33 * 51 * 80mm

Circuit board size: 73 * 44mm

Product features:

1. Four display modes: time, temperature - temperature, time - date - week, time - temperature - date - week

2. Light control brightness: the brightness of the digital tube is adjusted by intelligent sensing of the ambient brightness, which is not dazzling when used at night.

3. Two sets of alarm clocks: two sets of alarm clocks can be turned on/off at the same time, and one set of alarm clocks can be turned on/off separately for the goods list.

4. Stopwatch: record seconds and minutes.

5. Countdown: timing prompt function, the countdown time is up, vibration or ringing prompt.

6. Vibration ring: The vibration motor is used with the buzzer. The countdown and alarm clock can turn on the ring and vibration effect at the same time, or turn on or off a certain effect separately. For example, if the alarm clock is turned off, the alarm clock will only vibrate and not disturb others when the countdown is closed.

7. Carry it with you: you can use USB plug to power it, or you can use lithium battery to charge it.

8. Power saving mode: It can be used with lithium battery to reduce standby power consumption and prolong battery life.

Function instructions：

Press S1 to display the date, week and year. Key S2 is used to display temperature, alarm clock, minutes and seconds. Press and hold the key S1 for more than three seconds to enter the setting state. The nixie tube displays "Fu-1", indicating function 1. Use keys S2 and S3 to switch between various function numbers. Use the key S4 to enter the corresponding functions. Each function description: Fu-1: set the time, press S1 to move the flashing bit segment, press S2 to increase the number, S3 to decrease the number, and S4 to save the setting. Fu-2: Set the date. Press S1 to switch to month, day and year respectively. After switching to the year, the nixie tube displays "20XX", with the last two digits flashing and the front "20" fixed. After the year is modified, press S4 again to save the settings. Fu-3 and FU-4: Set the time of two alarm clocks. Note that the alarm clock hours can be set to "24". When it is set to "24" and saved, the alarm clock is turned off. Fu-5: Set the time reminder, display mode and display brightness control. The first digit of the nixie tube displays "1", indicating that the time reminder function is turned on. The second digit of the nixie tube indicates the display mode (0. Only display time 1. Display time and regularly display a few seconds of temperature 2. Display time, regularly display date and temperature. 3. Only display temperature). The last two digits of the nixie tube indicate the display brightness. When the last two digits are set to "A", Indicates automatic brightness control. The display brightness is controlled by the ambient light sensed by the photosensitive resistor. Fu-6: set the vibration motor, 1 means to turn on the vibration, 0 means to turn off the vibration, and the latter two digital tubes display 33 means the current vibration setting interface. Fu-7: set the temperature measurement deviation. The larger the number, the higher the temperature measurement value, and vice versa.

In the non-set state, long press S2 to enter the stopwatch function. After entering the stopwatch, short press S2 to start and stop the stopwatch. In the stop state, short press S1 to reset the result, and long press S3 to exit the stopwatch function. In the non-set state, press and hold S3 to enter the countdown function. After entering the countdown function, use S1 to move the flashing position, S2 and S3 to modify the number, and S4 starts the countdown. Press and hold S2 to exit the countdown function. In the non-set state, short press S4 to turn off the nixie tube to save power. Then press S4 briefly to light up the nixie tube

After assembly and first power-on, if the digital tube displays garbled code as normal, it can be restored to normal after setting, and the set parameters are saved on the timing chip. If the backup battery is removed after power failure, the saved settings will be lost. It may also display garbled code. Just set it again.

Circuit diagram:

Package Included: