Rotating LED electronic clock

Features:
The electronic clock adopts the principle of digital tube display design, adopts the design of plug-in components, and has high success rate. Contains six Time animation, effective display of time and various functions. LED flashing light includes four offline animation display modes, lighting effects The fruit is very decorative, bringing a good aesthetic to the home and table. The electronic clock is alternately displayed with time and temperature. Precise and with power-down memory travel time function. With an alarm clock function, it can be turned off. With light control function, according to the environment Adjust the brightness.

Circuit principle:
Using single-chip microcomputer as the main control, use DS1302 travel time chip to provide accurate travel time clock source, combined with digital tube And LED lights show specific time values. Combined with the temperature light intensity detecting element, it can achieve the brightness adjustment and temperature check attached. Test function. The control button of the single chip is combined with the necessary key input adjustment function, and the clock sound is processed by the single chip and then beep.

Common problems:
1. The welding sequence is wrong. It is recommended to solder the LED lamp first, then solder the back component, solder the digital tube, and finally insert the chip. 2. LED lights pay attention to the positive and negative poles, long legs and positive poles. 3. The chip notch and the base notch must be consistent with the notch identified on the board. 4. Buzzer pay attention to positive and negative poles, long foot positive pole, resistance resistance value to follow Consistent on the logo. 5. The triode should be inserted in the same shape as the board. 6. The digital tube pays attention to the direction, and the decimal point is below. 7. Power supply pay attention to the positive and negative poles, the power supply DC voltage is 5V. 8. Check for solder shorts and solder joints. This phenomenon is common. 9. If the display is abnormal or the time is not gone, remove the DS1302 and buttons. Battery, then plug in the DS1302, do not plug in the battery, and then power on, Put the battery on after normal. 10. If the individual lights are not lit, check the solder shorts of the unlit lights and Soldering, check it, and change the light if it is not lit. 11. If the four digital tubes have the same segment code that is always on and highlighted, Some LEDs are also always on because of an electrostatic breakdown of an LED. a digital tube that causes a single-chip pin to share with this lamp.

Features:
With automatic adjustment of brightness, time and temperature alternately display, alarm clock, power off memory function.

Functions:
1. Electronic clock function. Four digital tube display time function. Every second, digital tube, two points on a flashing, at the same time, the casing outside the clock LED will take turns to light up a take turns bright finish a circle represents the clock through a minute
2. Date display. Through the key switch, you can see the preset date. Specific look at the following keys function description
3. Alarm function. Through the button switch, you can set the alarm clock function. When to set the alarm time, buzzer sounds, if not, manually turn off the buzzer will continue to ring for 10 minutes. Specific look at the following keys function description
4. Burning function. The reserved buffer program interface, can change to the circuit board to do procedure, easy to operate
5. Real time clock function. Tone after a preset time, even if the power lost, again after power on, no need to set a time
6. Temperature display function. Under the time display mode, press PLUS, can display the current temperature
7. Many mode display function. Outer LED display has four modes, can cooperate to add key implementation, through the model key
Mode 0: is also the default display mode, all the 1-12 hours red digital tube light, when the clock through a second, is the green digital tube is take turns to light up a.
Mode 1: as the clock through a second, outer ring LED lit one by one, that is 60 seconds, outer ring all the LED light. The next minute, all leds light up, and through the clock for a second, put out one by one. And the next minute, leds light up one by one again, so alternates.
Mode 2: when the clock through a second, outer ring take turns to light up a LED. The first seconds, only the first LED light, 2 seconds only the second LED light.
Mode 3: when the clock through a second, outer LED turns off a. The first seconds, only the first LED out, only the second LED out 2 seconds.

Key Function:
PLUS key, for years, months, days, hours, minutes, seconds add operation. According to the numerical sum 1 at a time
MODE key, can be in display clock, switch to the year, month, day, hours, minutes, alarm clock, the adjustment of outer ring LED display state. To use add key to the year, month, day, hours, minutes, seconds, and display mode to adjust
RST key, press the reset button, then the MCU reset

Package Included:
1 x DIY Rotating Digital LED Display Module Alarm Electronic Digital Clock Kit 51 5V DS1302 + CR1220 Battery
1 x Acrylic Enclosure
We don't provide technical assistance please make sure that you are familiar with the product before purchasing.