Just picked up two 4.1's, super excited to get the speed result. I need to control an external Arduino Leonardo. I was thinking about using some sort of digital I/O via analog or digital outputs but was reading about the different interfaces. I need send about 20 or so commands over to the Arduino Leonardo for some actions.
What's the most effective and reliable way to do this without using a lot of pins? Serial? SPI? I2C?
Thanks!
What's the most effective and reliable way to do this without using a lot of pins? Serial? SPI? I2C?
Thanks!