Ok, as somewhat rambled on in my build thread for the Arduino 'Tap Express' thing, I can seem to find a conclusive answer for this issue,
nor can i find conclusive information on whether the Line6 3.3v logic is 5v tolerant.
I started by creating a resistive divider on the Arduino input pin via a standard 'resistive divider' calculator.
Thing is it didn't do at all what I expected, the voltage came out way lower than the calculator.
I thought it was also due to using bus power over usb, so hooked up a 9v DC supply but a standard resistive divider setup gave
unexpected results. (not the same as calculated)
So next I just hooked up the multi meter and reconfigured resistance until I got about 3.5v
After messing around for a while with a divider, I just ended up with a single 100k resistor to ground on the Arduino input pin.
Can I assume (?) 3.5/3.6v is "safe" to hook up to the Line6 Logic, anyone done something similar?
Also, would there be any potential drawbacks to using this resistor to ground to lower the voltage on the Arduino input?
I mean, everything seems to work ok, as in I can still get the input to recognise the taps, or could it be prone to issues?
Picture is just for no reason other then showing how it's all crammed onto 15x15 holes.
