So while i am still trying to Frankenstein my way to a somewhat working hotend mount on my Wanhao I3 i made some progress recently which made me hopefull that there is light at the end of the tunnel however there are a few issues which i can't seem to pinpoint why they keep happening seemingly randomly. So i have made a contraption to have a single piezo being triggered around my hotend carriageby CaptainHero - General
Well i can give it a shot. However i have a heated bed. Wouldn't that be an issue for the sensors? Also the link does not seem to work?by CaptainHero - General
Well i tried a couple of placements on my Wanhao I3 (wedging underneath the extruder motor, between extruder motor and x carriage holder, wedging between the original hotend mount holder and a piece of pla attached with screws) but so far neither of these placements seem to give enough sensitivity to the piezo for a light tap on the nozzle to register with a sufficient signal to trigger it reliabby CaptainHero - General
Quotedc42 Hi, My guess is that the differences in trigger height correspond to the points where the surface under the bed is not black (although 2mm sounds like a very large difference). Can you confirm this? If so, here are some possible solutions: One other possibility is that you have bright sunlight reflecting off the bed into the phototransistor, causing it to saturate. If that happens, thby CaptainHero - For Sale
Hi, So yesterday my Mini IR Board arrived which i installed promptly. I did some UBL test measurements as well as repeatability tests and i was impressed with the consistent readings the sensor delivered throughout the mesh of my plate. I had also adjusted my Z height properly via storing an offset so as to have the desired distance of the nozzle from my glass bed. However now comes the not so hby CaptainHero - For Sale
Quotejebk On mine (which might be unique or typical, really not sure) there is enough compliance in that joint to trigger a piezo. Will be experimenting with mine too around that area but let me know how your tests go and if successfull where exactly you placed the sensor with what kind of adapter if any.by CaptainHero - General
Thanks for the tips. Quotepause at 0.4sec In Marlin this would be the following setting right (value in miliseconds)? #define DELAY_BEFORE_PROBING 400 QuoteYou can and should also set pause before probing Pause for how long? I assume this would be a gcode command in the startup script right? If so which one?by CaptainHero - General
Ahh cool. I did not know that. Well then thats a load off my mind thenby CaptainHero - General
What do you mean only axis that moves is the Z? If i do an auto bed leveling mesh before a print it will probe my bed at various points therefore the x, y and z axis will all be moving constantly for the duration. How can i make sure that no false triggers are registered because of the movements between probe points? Also since the piezo acts basically as the Z endstop as well if it is triggeredby CaptainHero - General
Yeah but that then raises another question. Wouldn't any other movement or bump that is not a nozzle touching the plate (such as normal x and y axis movement or even z axis movement) trigger the sensor and therefor giving false readings or in case of mid print an emergency stop?by CaptainHero - General
I guess i can give that a shot i just don't know how that would work in reality as the setup is quite sturdy and i doubt that there is any sort of movement of the components on the black carriage plate that would push against the sandwitched sensor. However at this point i also don't have a better idea so i will give that a go first when it arrives. Worst case when push comes to shove i may altby CaptainHero - General
Took off the motor and the filament guide part and this is how it looks. I guess technically i may be able to put the sensor somewhere at the black backplate that holds the extruder setup to the x carriage but its quite sturdy setup so i am not sure what good that would do since i don't think the motor would press against the sensor at all when the nozzle touches the plate. I could be mistaken toby CaptainHero - General
So while i await the arrival of the kit i have been doing some reading on how exactly the piezo sensor works. I understand it requires some squeeze pressure or bend for it to send a signal. Now looking at the Wanhao I3 extruder setup i am pondering where ideally i would need to find a place for the sensor / design some sort of mount for this effect to be achieved. Attached below i have a pic ofby CaptainHero - General
At any rate i have just ordered a kit and will give this also a try as the potential benefits of using something like this as a z probe sound really really good. I'll worry about how to set it up when it gets hereby CaptainHero - General
Yeah i forgot to mention that the Wanhao uses actually a MK10 extruder and not the E3D V6. I didn't read through the whole thread and maybe thats why i am missing the info but i want to first understand how this Piezo actually works as a zprobe in order to give it a crack to try to fit it on my wanhao. I guess it works sort of like a vibration sensor detecting the impact of the nozzle towards tby CaptainHero - General
Sure. Here you go. Let me know if anything is unclear based on the pictures. The blue thing in front is a LED light mount. The black L shaped piece held there with a clip is only a temporary mount for my BL touch atm. The rest is the hotend, extruder gear etc.by CaptainHero - General
Hi, I am interested in trying out this type of Z Probe. Can't say that i can design a proper mount (not sure where the sensor needs to be placed exactly on my machine for it to work) but if anyone is willing to create a mount for the Wanhao I3 (v2.1) that would be cool. Alternatively if someone can explain to me how exactly this type of sensor needs to be mounted in general on a hotend i might tby CaptainHero - General
Hi, I am interested in trying this out and I was wondering if this probe can also be used with non E3D V6 hotends specifically i would like to use this with the stock hotend of the Wanhao i3. Is this possible? If so what sort of modifications would i need to do to make it work (for the hotend placement and not under the heated bed)? Is there any special place the Piezo needs to be placed for itby CaptainHero - General