Arduino to SparkFun Quad Solid State Relay

Community General Discussion
1

I'm trying to connect an Arduino Mega to a SparkFun Quad Solid State Relay. SparkFun Qwiic Quad Solid State Relay Kit - KIT-16833 - SparkFun Electronics

The interface it has has 3.3v, ground, SDA and SCL.

There is also this library which allows Arduino to talk to the device over Qwiic
https:// github . com/ sparkfun/ SparkFun_Qwiic_Relay_Arduino_Library

What I'm not sure though it what pins on the Arduino I need to use for SDA and SCL.

Any help would be greatly appreciated! Thanks

2

Pins 20 and 21 are SDA and SCL, respectively. SDA and SCL are also broken out to pins by the ground by pin 13. See reply #12 of this thread.

For what are you using the relays?

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