AndreaACME
New Member
Hi all, I'm trying to have a few more digital input pins than there actually are available on the 08M2.
I'm aiming for 3 distinct "on/off type" inputs coming on the ADC pin (C.4) going through some kind of weighted resistor network. I've already tried the R-2R log ladder but it requires too accurate resistor values.
Has anyone already tried this or have a better suggestion?
I would rather code more than introduce ICs (comparators, etc) into the circuit.
Thanks
I'm aiming for 3 distinct "on/off type" inputs coming on the ADC pin (C.4) going through some kind of weighted resistor network. I've already tried the R-2R log ladder but it requires too accurate resistor values.
Has anyone already tried this or have a better suggestion?
I would rather code more than introduce ICs (comparators, etc) into the circuit.
Thanks