Clock Shield RTC DS1307 Module Multifunction Expansion Board with 4 Digit Display Light Sensor and T

Description: Clock Shield (digital clock module) Shield contains the most common resources for a basic electronic project, like buttons, sensors, buzzers, and display. Combined with Arduino compatible motherboard is a perfect start for beginners of Arduino world. Features: 1. Brand new handy and pretty cheap 2. Can be directly inserted on the compatible board for Arduino 3. The on-board real-time clock chip 4. For Arduino rich supporting experimental routines with other SCM systems 5. Handy and pretty cheap Specification:

Item	Min	Typical values	Max	Unit
Voltage	4.5	5	5.5	V
Current	-	80	-	mA
Size	74x59x30			mm
Net weight	35			g

Interface: Clock Shield interface as shown below:



Hardware resources: Battery Holder: Battery on the card to the real-time clock chip power supply, making the board can continue to power down timer ; Buzzer: 5V DC buzzer, do alarm clock, key tone ; Photoresistor: the intensity of the ambient light sensor ; Thermistor: detecting environmental temperature ; K1 ~ K3: SCM can be scanned directly touch of a button ; U5: TM1636, namely, four 8-segment common anodes LED Driver IC ; U3: DS1307, namely, real-time clock chip ; D1 ~ D4: blue, green, red, red, 3mm plug LED. Digital tube: 4 8 segments of positive points with a digital clock, and the decimal point is not displayed, only for identification purposes direction. Occupied Arduino pin Resources: Total occupied nine digital pins, two analog input pins, an I2C interface D2: control blue LED1; D3: Control the green LED2; D4: Control the red LED3; D5: Control the red LED4; D7: connection TM1636 clock pin SCLK; D8: TM1636 data connection pin DIO; D9: control keys K1; D10: control buttons K2; D11: control buttons K3; A0: poll readings from temperature sensor; A1: poll readings from the light sensor; A4: connect the DS1307 I2C data pin SDA; A5: connect the DS1307 I2C clock pin SCL

Package includes:

1 x Clock Shield