Whisker Pi Hat


Whisker Kickstarter Item

Note: This item is currently only available on Kickstarter, it will be for sale on our site after the Kickstarter is complete and rewards have been fullfilled


This Pi Hat allows users to add Whiskers to their Pi projects. Featuring a 4-channel Multiplexer, Real-Time Clock (RTC), on-board voltage regulation and level shifting, this board allows you to add up to 4 Whisker Boards to your project with ease! 

To learn more about the TinyDuino Platform, click here


    TI PCA9544A Multiplexer Specs

    • I²C Bus 
    • Four Active-Low Interrupt Inputs
    • Active-Low Interrupt Output
    • Three Address Pins 

    DS1339 I²C Serial Real-Time Clock (RTC)

    • Manages all Timekeeping functions: Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
    • Two Time-of-Day alarms

        Power Requirements

        • Voltage: 3.0V - 5.5V 

        Pins Used

        • A5/SCL - I²C Serial Clock line
        • A4/SDA - I²C Serial Data line
        • IO2 - Used for RTC
        • IO3 - Used for RTC
        • IO4 - Power Control 


        • 30mm x 65mm (1.18 inches x 2.56 inches)
        • Max Height: 12.5mm (0.48 inches) Measured from the top of the 5-pin connectors, and the bottom of soldered header pins
        • Weight: 6 gram (.21 ounces)


        • The multiplexer used allows you to use two or more I²C devices with the same address, without interference problems. 


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