5v inductive sensor to Duet Wifi January 29, 2018 07:28PM |
Registered: 6 years ago Posts: 262 |
Re: 5v inductive sensor to Duet Wifi January 30, 2018 04:11AM |
Registered: 8 years ago Posts: 5,232 |
Re: 5v inductive sensor to Duet Wifi January 30, 2018 11:23AM |
Registered: 6 years ago Posts: 262 |
Quote
o_lampe
There are many vendors who claim their probes would work at 5V, I hope you have a real one...
With the 5V version you wouldn't need the low_drop shottky diode. And you have to put I1 ( capitol i1 ) in the config line of the z-probe, when it's a NPN NO type.
Re: 5v inductive sensor to Duet Wifi January 30, 2018 12:26PM |
Registered: 8 years ago Posts: 5,232 |
Re: 5v inductive sensor to Duet Wifi January 30, 2018 05:18PM |
Registered: 10 years ago Posts: 14,672 |
Re: 5v inductive sensor to Duet Wifi January 30, 2018 06:30PM |
Registered: 6 years ago Posts: 262 |
Quote
dc42
These NPN NO sensors normally have open-collector outputs, meaning they connect the output to ground when triggered and leave it in effect open circuit when not triggered. The complication is that if the ground wire to the sensor becomes disconnected, then the sensor supply voltage will get fed to the output pin via a diode and an unknown amount of resistance internal to the sensor. That's why we recommend using the Schottky diode. But if the supply voltage is only 5V then the risk of feeding excessive current into the endstop input or Z probe input is low anyway.
Re: 5v inductive sensor to Duet Wifi February 13, 2018 01:11PM |
Registered: 6 years ago Posts: 262 |