![]() ![]() 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. According to the numerical sum 1 at a time PLUS key, for years, months, days, hours, minutes, seconds add operation. The first seconds, only the first LED out, only the second LED out 2 seconds. Mode 3: when the clock through a second, outer LED turns off a. The first seconds, only the first LED light, 2 seconds only the second LED light. Mode 2: when the clock through a second, outer ring take turns to light up a LED. And the next minute, leds light up one by one again, so alternates. The next minute, all leds light up, and through the clock for a second, put out one by one. ![]() 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. 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. Outer LED display has four modes, can cooperate to add key implementation, through the model key Under the time display mode, press PLUS, can display the current temperatureħ. Tone after a preset time, even if the power lost, again after power on, no need to set a timeĦ. The reserved buffer program interface, can change to the circuit board to do procedure, easy to operateĥ. Specific look at the following keys function descriptionĤ. When to set the alarm time, buzzer sounds, if not, manually turn off the buzzer will continue to ring for 10 minutes. Through the button switch, you can set the alarm clock function. Specific look at the following keys function descriptionģ. Through the key switch, you can see the preset date. 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 minuteĢ. With automatic adjustment of brightness, time and temperature alternately display, alarm clock, power off memory function.ġ. a digital tube that causes a single-chip pin to share with this lamp. 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. 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. Battery, then plug in the DS1302, do not plug in the battery, and then power on, Put the battery on after normal. ![]() If the display is abnormal or the time is not gone, remove the DS1302 and buttons. Check for solder shorts and solder joints. Power supply pay attention to the positive and negative poles, the power supply DC voltage is 5V. The digital tube pays attention to the direction, and the decimal point is below. The triode should be inserted in the same shape as the board. Buzzer pay attention to positive and negative poles, long foot positive pole, resistance resistance value to follow Consistent on the logo. The chip notch and the base notch must be consistent with the notch identified on the board. LED lights pay attention to the positive and negative poles, long legs and positive poles. It is recommended to solder the LED lamp first, then solder the back component, solder the digital tube, and finally insert the chip. 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.ġ. Combined with the temperature light intensity detecting element, it can achieve the brightness adjustment and temperature check attached. 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. With light control function, according to the environment Adjust the brightness. With an alarm clock function, it can be turned off. Precise and with power-down memory travel time function. The electronic clock is alternately displayed with time and temperature. 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. ![]() Contains six Time animation, effective display of time and various functions. The electronic clock adopts the principle of digital tube display design, adopts the design of plug-in components, and has high success rate. ![]()
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