ATMega328 RC vs quartz oscillator comparison
Kenneth compares the RC oscillator found on the ATMeg328 against an external quartz crystal. As expected there is a huge difference in precision and stability between the two.
This entry was posted in demonstrations and tagged ATMega238, oscillator.
This really demonstrates how both oscillators, but particularly the internal one, are very sensitive to temperature changes around the microcontroller. This is why my counter’s oscillator is contained in a small oven, such that it’s held at a specific elevated temperature and doesn’t change temperature along with the room.