DriverNano16

[K-Tett]

I am reading up the code for the DriverNano16, but I don't understand how the arduino nano would be able to drive 16 channels since the Port C of Arduino Nano only have 6 bits and Port D have serial pins in the first two bits.

This would mean that we are essentially driving 12 channels, and where would other 4 channels be driven? How would we wire the board?

Also, I read up other code like DriverMega64, but the N_DIVS constant confused me as well. DriverMega64 N_DIVS is 10 and N_DIVS for nano is 16. What does this N_DIVS mean?

Thank you in advance!