DS1302 forgó LED-es kijelző ébresztő elektronikus óra modul barkácskészlet LED hőmérséklet kijelző az arduino számára
DS1302 Rotating LED Display Alarm Electronic Clock Module DIY KIT LED Temperature Display for arduino
Rotating LED electronic clock manual
 
Function introduction: This electronic clock adopts digital tube display principle design and plug-in component design, which has a high production success rate. Contains six
This kind of time animation can effectively show time and various functions. LED flash contains four offline animation display modes, light effects
The fruit is extremely decorative, bringing a good aesthetic effect to the home and the setting. Electronic clock uses time and temperature to display alternately
Accurate and power-off memory travel time function. With one alarm clock function, you can open and close. With light control function,
Adjust the brightness automatically.
Circuit principle: adopts single-chip microcomputer as the main control, uses DS1302 travel time chip to provide accurate travel time clock source, combined with digital tube
And LED lights show the specific time value. Combined with the temperature light intensity detection element, the attached brightness adjustment and temperature detection are realized
Test function. The single-chip microcomputer controls the keys and cooperates with the necessary key input adjustment functions. The clock sound is processed by the single-chip microcomputer and then beeps.
Device issued.
common problem:
1. The welding order is wrong, it is recommended to solder the LED light first, then the back components, then the digital tube, and finally insert the chip.
2. Pay attention to the positive and negative poles of the LED lamp and the positive pole of the long foot.
3. The chip notch and base notch must be consistent with the notch marked on the board.
4. The buzzer should pay attention to the positive and negative poles, the long positive pole, and the resistance value should follow the board
Identified on the.
5. Plug the triode into the same shape as the board.
6. Note the direction of the digital tube, the decimal point is below.
7. Pay attention to the positive and negative poles, and the DC voltage is 5V.
8. Check the phenomenon of welding short circuit and virtual welding. This phenomenon is very common.
9. If the display is abnormal or the time does not go away, remove the DS1302 and the buttons
Battery, and then plug in DS1302, without battery, then power on,
Put the battery back in after normal.
10. If the individual lamps are not on, check the welding short circuit of the off lamps and
Welding, check it, and change the lamp if it is not on.
11. If four digital tubes have the same segment code always on and highlighted,
Some LEDs are always on because one LED is damaged by static welding
, Led to a digital tube sharing a single-chip microcomputer pin with this lamp
Segment codes and other LEDs are affected, the workaround is to switch to
Clock LED full light mode, observe which 60 LEDs should be on
If the LED is off, there is something wrong with this LED, just replace it.
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