DESCRIPTION

This TinyShield is the heart of the Wireling line. Featuring a 4-channel Multiplexer, on-board voltage regulation, and level shifting - this board allows you to add up to 4 Wirelings per Shield to your project with ease! Using a multiplexer also allows you to use two or more I²C devices with the same address, without interference problems.

Up to 8 Wireling Adapters may be stacked together by changing the address resistors on the board for a total of 32 Wirelings. 

Wireling Adapter TinyShields are compatible with TinyCircuits processors that have a 32-Pin Connector.

New to Wirelings? Check out the Wireling Overview!

Note* 5-Pin Wireling cables not included and sold separately.

TECH SPECS

MULTIPLEXER Specs

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

TinyDuino Power Requirements

• Voltage: 3.0V - 5.5V 

Pins Used

• A5/SCL - I²C Serial Clock line
• A4/SDA - I²C Serial Data line
• INT - Optional IO2 or IO3 on TinyDuino
• IO4 - Power Control 
• I²C Address used: 0x70

Dimensions

• 20mm x 20mm (.787 inches x .787 inches)
• Max Height (from the bottom of 32-pin expansion connector to top Wireling Connector): 5.9mm (0.23 inches)
• Weight: 1 gram (.04 ounces)

NOTES

• You can also use this TinyShield without the TinyDuino – modifying the connecting cable by removing the opposite connector and stripping/tinning the wires, you can solder the connector cable to any other microcontroller board of your choice!   

• When bringing the device out of low power mode, it may be necessary to re-initialize certain sensors. Check the component datasheets to ensure proper operation and setup times for each Wireling is used. 

• The Wireling Adapter TinyShield (ASD2022) incorporates level shifting and a local power supply to ensure proper and safe operation over the entire TinyDuino operating voltage range up to 5V.

DOWNLOADS

• PCA9544A Datasheet
• Design Files
• Schematic
• Arduino Example Code
• CAD 3D and 2D Files