Hi guys, I am a complete newbie in the microcontrolers field and I have a question that might sound newbie to you but is important to me. I have an Arduino mini pro ATmega 328 3.3V board and I have chosen it because I have to read the signals from a Hall magnetic sensor IC EM3242, whose maximal power voltage rating is 3.3V. My problem is that I don't know whether this board will be able to read the RCreceiver PWM signals, whose maximum voltage is 5V, without damaging the Arduino board.
Thanks in advance!
Where does the 5V signal come from?
ATMega at 3.3V will be damaged if the IO is driven at 5V levels.
At a minimum, need resistor voltage-dividers to bring the 5V down to 3.3V.
Thank you very much for the response.
The 5V PWM signal comes from a radio control receiver (RC hobby RX-receiver, TX-transmiter 2.4GHz system).