Produino 4.5~5.5V Clock Shield w/Expansion Board for Arduino

Battery holder: card powered battery for the real time clock chip, so the board can continue counting down;Buzzer: 5V DC buzzer, do alarm clock, key tone;Photoresistor: Induction of ambient light intensity;Thermistor: detect ambient temperature;K1~K3: chip can be scanned directly touch of a button;U5: TM1636, ie, four 8-segment common anode LED Driver IC;U3: DS1307, namely real-time clock chip;D1 ~ D4: blue, green, red, red, 3mm plug-in LED.Digital tube: four 8-segment common anode LED with clock points, while the decimal point is not displayed, only for orientation recognition purposes.Occupy the Arduino pin resources: total occupied 10 digital pins, two analog input pins, an I2C interfaceD2: control blue LED1D3: Control the green LED2D4: Control the red LED3D5: Control the red LED4D6: control the buzzer;D7: Connect TM1636 clock pin SCLK;D8: Connect TM1636 data pins DIO;D9: control keys K1;D10: control keys K2;D11: control buttons K3;A0: Connect thermistor;A1: Connect photosensitive resistance;A4: Connect the DS1307 I2C data pin SDA;A5: Connect the DS1307 I2C clock pin SCL.Voltage 4.5~5.5VCurrent: 80mAA product for Arduino that works with official Arduino boards.GeneralBrandProduinoModelN/AQuantity1 pieceForm ColorBlue + BlackMaterialPCBSpecificationEnglish Manual / SpecYesOther FeaturesOther FeaturesVoltage 4.5~5.5V; Current: 80mAPackage Weight:0.042kg (0.093lb)Package Size:7.8cm x 6.4cm x 3.1cm (2.76in x 2.36in x 1.18in)