DIY DS1302 Rotation LED Electronic Clock Kit 51 SCM Learning Boa

product description
* Electronic clock function. Four digital display time function. Every second, two dots on the LED flashes. At the same time, the clock LED housing will turn on and turn on to complete a circle representing the passage of the clock for one minute.
* Date display. By pressing the key switch, you can see the default date. Specific look at the following key functions.
* Alarm function. You can set the alarm function by pressing the button switch. When to set the alarm time, buzzer sounded, if not, manually turn off the buzzer will continue to ring for 10 minutes. Specific look at the following key functions.
* Burning function. Reserved buffer program interface, can be converted to the circuit board to do the program, easy to operate.
* Real-time clock function. After the preset time, you do not need to set the time even after the power is turned off even if the power is off.
* Temperature display function. In the time display mode, press the PLUS button to display the current temperature.


Size: 81mm x 81mm x 1.6mm. PCB thickness: 1.6 mm. Material: FR4 military grade. PCB color: blue. Digital display: red.
Power supply: miniUSB, external connection 5V, 3V button battery for standby power supply board clock chip.
Button function: PLUS button, can be for years, months, days, hours, minutes, seconds to add operations. According to the number and 1 each MODE button, you can display the clock, switch to the year, month, day, hour, minute, alarm, adjust the outer ring LED display status. To adjust the RST key using the Add key in year, month, day, hour, minute, second, and display mode, press the reset button, then reset the MCU.
Package includes: 1 rotating LED electronic clock kit.
Multi-mode display function. External LED display has four modes, you can add the button to perform, through the model button mode 0: also the default display mode, all 1-12 hours red digital tube light, when the clock after a second, is the green digital tube turns point Bright. Mode 1: As the clock passes the second one, the outer LEDs are lit one by one, ie 60 seconds, and all the outer LEDs are lit. The next minute, all the LED lights up, and one second off, one after another. The next minute, light up again, so alternately. Mode 2: When the clock turns on an LED through the second outer ring. The first second, only the first LED, 2 seconds only the second LED. Mode 3: When the clock is turned off by the second external LED a. The first second, only the first LED is off.