Wireling Pi Hat
DESCRIPTION This Pi Hat allows users to add Wirelings 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 Wireling Boards to your project with ease! There are two options when ordering this board: 1. Soldered: The female header pins to attach the Pi Hat to a Pi are soldered so you can get building as soon as possible. 2. Not-Soldered: This option is best for you when you already have soldering equipment at home, or you want to use some other form of header pins. (The header pins in the product images will ship with this option) New to Wirelings? Check out the Wireling Overview! Note* 5-Pin Wireling cables not included and sold separately. TECH SPECS 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 Dimensions 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) NOTES The multiplexer used allows you to use two or more I²C devices with the same address, without interference problems. DOWNLOADS PCA9544A Datasheet Schematic Eagle Files