Do you guys know how to find SoftwareSerial from Arduino or where can I find from online?
Are you using win10 or 11?
If yes, look here:
C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries
PS: My IDE is ver. 1.8.9
Hi I am using Mac OS
I don't think your board support the software serial because there is a way to reconfigure the pins of the hardware serial, so it doesn't need it.
I don't have this board but usually when a library isn't showing it's because your board doesn't need it or need to use something else.
Hi @jwang623
The SAMD21 microcontroller on the Nano 33 IoT has a number of spare serial communication or SERCOM modules that can act as additional hardware serial, SPI or I2C ports. This is why software serial isn't implemented on SAMD21 boards.
Adafruit have an excellent tutorial on this:
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