4 Wires BLTouch Connection

Trideo

Hey There,

Can we connect the BLTouch as shown below? 4 Wires connection?

Thanks!

Simon

Stephen6309

@Trideo For a BLTouch on a Duet 085 or Duet 2:
https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_Duet_2_WiFi_Ethernet_without_a_Duex_2_or_Duex_5_expansion_board

Trideo

Thanks @Stephen6309, actually we are trying to reduce printer wire types and use a "standard" 4 wires connection for BLTOUCH should help us a lot. Our technical team want to try a 4 wire connection, shorting one negative wire, so before doing a bad move, I preferred to ask here

Thanks

Simon

BoA

@Trideo I am using 4 wire connection with genuine bltouch 3.1 without any issues, just connect grounds together, or just leave black not connected (they are connected on BL Touch board I belive).

A Former User

At least the genuine 3.0 smart I've got here have the two ground connections common on the bltouch board, so wiring up just one should be fine. Not sure about other versions or imitations but easy enough to test with a multimeter before wiring it.

On the subject, is it documented what type of connector the 5 pin on the sensor is? I've seen suggestions to both picoblade and some jst but nothing very definitive.

dhusolo

I connected the 2 ground wires together and it's been fine

Trideo

@bearer thanks for answering! About BLTouch connector, we wrote to AntClaBs directly but they newer answered, any news I keep you informed!

A Former User

@Trideo said in 4 Wires BLTouch Connection:

we wrote to AntClaBs directly but they newer answered

same; but its only been a week for me. last year they responded quite quickly and in length on another query, so fingers crossed!

gaweyo

@Trideo said in 4 Wires BLTouch Connection:

About BLTouch connector

I used the 5 pin version of this recently. https://www.aliexpress.com/item/4000708135064.html seems to fit both the genuine and cloned BL Touch, but the catches are just ever so slightly smaller so its not as secure as the genuine wire. Seems to be on par with the cloned though.

A dab of hotglue or silastic for peace of mind might be a good idea, or to get genuine JST parts from a repurable source..