I have a 328P chip that I am using as a breadboard Arduino without a crystal. So it is running the 8mhz internal oscillator and that is running just fine for me. I am trying to set the prescaler on timer1 to no prescaling which based on my reading can be done with this piece of code below. Based on reading the datasheet timer1 appears to use the crystal and I am not using one. My question is it possible to change this and have timer1 run off of the internal oscillator?
TCCR1B |= (1 << CS10); //no prescaler