I'm searching around the house for a 16 MHz xtal but I only find 12 MHz, 22 MHz and 24 MHz. So being feed up of searching, and to lazy today to go out cause it's raining, I'm wondering if the ATMéga328 would run at 12 MHz or does it really need a 16 MHz clock signal to run the Arduino system?
Can Arduino run at a slower pace the 16 MHz?