@tombrazier , mayby a silly question but what rpm are you using when grinding bearings on your rotary tool? I was trying with 10k rpms and 2 bearings are not usable already. Not sure that it is because of the speed and now I am tweaking the jig but I'd like to know anyway.

@dc42 according to documentation in RRF 2.x P define a type and sometimes a pin too. P4 define type and pin is defined by C parameter. 9 ms is the time between my probe output (pushpull type) to reaction of the printer visible at accelerometer output so maybe it is the dynamics of my printer mechanics that determinied this time. If you consider that time is very long I am apted to the last so I try to live with it for awhile. Anyway thanks for all responses

@droftarts thank you. It was the reason I start this topic. Initially I was sure that only Z probe input allow P8 mode and I want to evaluate benefits of making extra circuit to combine outputs from two sensor and if extra work gives some prize for me. But dc42's reply gives me a hope to get it without extra work. Alas, now I am at the start of the problem now so if it is possiblle please clarify timing difference between filtered and iunfiltered mode. I am not ready to change to RRF 3.x version yet.

@droftarts , sorry guys, but P8 probe mode doesn't work on E2Stop input (M558 P8 F1200 H5 R0.4 C5). Duet2 doesn't see any signal from probe even constant high level and P4 works perfect. So not a remedy for me.

@dc42 , thank you. If I understood it correctly M558 P8 C5 ... would work for me? I use firmware 2.05

I am developing an effector similar to Smart Effector for using my dc42 Kossel as an automatic solder paste dispenser. I use LSM6DS3 accelerometer chip as Z probe. At the moment it works pretty well for me and triggers an output within 1-2 milliseconds after plastic TT needle touches the bed or board on it. I use E2Stop input on my Duet2 Internet controller as Z probe input, P4 probe type in M558 command.

Everything worked satisfactory but there is a problem: time delay between my probe output and start of reaction the system is about 9 milliseconds. It is somehow long for my case (plastic needles is a delicate matter). As I understand it all Z probe inputs have some sort of filtering on them except the dedicate Z probe input on Duet2 board at P8 probe mode. But I don’t disconnect the Smart Effector when using my own effector, so if I want to use this dedicated input I need some sort of combining circuit.

So that is a question: what is the time of reaction difference between filtered and unfiltered inputs and is there any sense to mess with an additional circuit?

@jay_s_uk said in magnetic PEI sheet - will it interfere with smarteffector?:

I use a whambam system on my predator (PEI sheet with magnetic base)

Does you print nylon filament? And if so is there any issue with adhesion? Thanks for advance.

I have not got removable PEI sheet (but consider one as a replacement) but I use geckotek3d spring steel sheet on magnet base with smarteffector for about 3 years and have no problems with it. So IMO it should be the same with PEI sheet on magnet base. BTW I would like to know how will PEI be working as my geckotek3d cover has worn and they do not produce the plate anymore. HTH

Thanks everybody who response to me! Your help is appreciated. I might contact Olsson directly but not sure they know smart effector very well. Accordingly to BPisLife remark now I am inclined to try hardened steel nozzle first.

@chrishamm : Thanks for your response! Was there anyone at the show that used Olsson Ruby with direct contact Z-probe?