BL-Touch - Voltage?

dutti

hey,
the configuration tool tells me that I have to switch from 5v to 3.3v concerning the BL-Touch. What do I have to switch and how to do it?
And do I have to wire only to 4 pins on deut3 6hc?
thanks a lot

arhi

@barbarossa-cologne

voltage depends on the version of bltouch, newest ones are working either way, older ones you need to cut one trace and oldest ones do not work on 3V
wires - bltouch comes with 2xgnd so you need to connect only one, the other one is not required. So min is Vcc, Vss, Servo, Signal.

dutti

@arhi
thank you!!

dc42

Duet 3 is 5V tolerant, so even if using an old version of BLTouch it does not need to be set to 3.3V.