Hi, just wondering..
I have the Arduino Due board and the Ping sensor from Parallax.
I know the inputs and outputs of the Arduino board are 3.3V and that the Ping sensor needs to be powered with 5V and I am worried if I connect the Ping sensors (signal) pin into an input on the Arduino it might damage the Arduino as the signal might be more than 3.3v.
On the Ping data sheet it specifies "TTL or 3.3 V CMOS micro controllers " does this mean that I can connect the (signal) pin directly into an input on the Arduino Due or do I need to add a resistor in series with the (signal) pin, if so what resistance would be required?
Thanks in advance!