It's the wiring at the other end that people occasionally get wrong, I don't think that's the case here but it's an easy thing to check and one thing to cross of the list of possible causes. I suspect that either your ramps has a particularly low threshold or the board I sent you has a particularly high logic low output. I'm happy to send you a replacement but there are a couple of things you coby Moriquendi - General
Ok, if you're not getting a triggered response even when the blue LED is lit then there's either a configuration issue or a connection issue. I've had a look at your config.h and I can't see anything wrong but it's been a long time since I've used Marlin, if there's anyone else out there with more recent experience who could take a look I'd be grateful. Can you double check your wiring, make surby Moriquendi - General
Hi Jeremy, Sorry to hear that you're having issues, could you give me some more information so I can work out what's going on. What kind of printer are you using? What kind of controller? Firmware? Are you supplying the module with 5v or 3.3v? Additionally can you check that you have pullups disabled and that the firmware is expecting an active low signal. The output signal is very brief andby Moriquendi - General
I'm looking for volunteers to beta test a new version of the Universal Board, looking for people who are already using a universal board. Drop me a PM if you're interested. Idrisby Moriquendi - General
The diodes on the input clamp the signal from the piezo to Vin + Vfd and GND - Vfd, they're silicon junction diodes so roughly Vin+0.7v and 0v-0.7v. What this does is route any voltage outside that range to the supply where the capacitance of the PSU (and elsewhere) makes it negligible. Adding a rectifier to the input would cut the bottom volt or so off the signal (twice the Vf of the diodes inby Moriquendi - General
If you hit the piezos hard enough you can get a significant voltage spike, 80-90v is easily achievable, not something you want to have reaching your controller. Leadinglights did significant testing on the the effect heat has on piezo disks (not all piezoelectric materials are the same, the PZT disks we're using are intended to be used as buzzers). I'll have to check the exact numbers but IIRC hby Moriquendi - General
Quoteo_lampe Temperature compensation and noise reduction goes hand_in_hand. Can you discuss your reasoning here? I'm not following... Idrisby Moriquendi - General
The effects start to show up at around 50c, I would expect to have serious problems at 80c. Heated chambers that go that high are pretty uncommon, I didn't think to ask. Adding temperature compensation to the board is possible but I think to ensure accurate compensation at every temperature would be quite complex (Read, expensive). Idrisby Moriquendi - General
There's no problem with signal available from the piezos, in fact we have to take precautions to prevent a hard trigger from causing a damaging voltage spike. Temperature decreases the output of the piezo disks, practically what that means is that if you're using a heated chamber you have to tune at the same temperature you probe at. Idrisby Moriquendi - General
The circuit implemented on the Orion is practically the same as that on the latest Piezo20 PCB, the advantages of the Orion are in robustness and ease of use though accuracy has also been improved. If you really want to conserve z-height then you will need probably need to engineer something different to the Orion, unless you can mount it higher on the carriage to "hide" the height of the moduleby Moriquendi - General
The advantages of the Orion over the Piezo20 are: Accuracy, the Orion module has shown in tests to improve upon the Piezo20 module and acheive 0.005mm accuracy (5um) Ease of assembly, the Orion module has only three parts and five screws. Brass threaded inserts already in place. Rigidity, the Orion module does not rely on the strength of the piezo disk to hold the clamp in place. Ease of tuninby Moriquendi - General
I've been trying to get PETg to work but I'm having great difficulty, I think it's caused by the bowden. I've gone back to ABS but made some changes to improve the strength. Idrisby Moriquendi - General
Quotetekkydave Well, you have my support. And it's very much appreciated. I/we (there's only two of us and Simon is taking a back seat at the moment) have received a huge amount of support from the whole community. This product has its roots here on the forums only 18 months or so ago. Leadinglights found an interesting idea, people talked about it, played with it, found it useful. I put the cirby Moriquendi - General
QuoteValSimDim "Given that one of our primary selling points is the accuracy of the system I'm somewhat nervous about releasing the PCB to be included in printed parts that may not match what we produce." Idris A little bit ironic.... Yup, turns out there's a big difference between making an accurate and consistent product in small numbers (5-10 beta units) and making something that is accuratby Moriquendi - General
This appears to be a consistency problem, some parts are so strong that I can't break off the groovemount without tools. Other parts, printed with the same settings, from the same gcode, on the same printer obviously aren't strong enough. I do test each piece for strength but it's possible that something is happening as the part gets older. As for the size of the hole, the top needs to be that lby Moriquendi - General
Is it firm in the mount now? Could it be made any bigger? Idrisby Moriquendi - General
Have I got an email address for you? If not can you PM me your email address so I can send it over Idrisby Moriquendi - General
I've got an updated version but no titan to test it with, anybody want to try it out? Idrisby Moriquendi - General
STLs are here on thingiverse Which dimension is too small? Neck too narrow, head too narrow or head too thin? Different mounts seem to grip the groovemount in different places, there also doesn't seem to be a great deal of consistency in the exact dimensions allowed for a groovemount. Idrisby Moriquendi - General
The hole in the Orion PCB is 6mm, you might be able to find some PTFE tube that would fit through into the hot end. I wonder whether if you retracted the filament a bit at the end of a print it would relieve enough pressure on the nozzle and allow you to probe with the cold nozzle? Idrisby Moriquendi - General
Hmm, that's interesting, you may well be right. I don't think we did much testing with 3mm filament. Idrisby Moriquendi - General
Somebody had the same problem as you and I think he solved it by putting kapton tape over the piezo before drilling, I wonder whether you could do the same thing but poke a hole in the tape to put the filament through. Idrisby Moriquendi - General
Probably, eventually. With the Piezo20 preload was set during assembly and could be adjusted meaning that the exact dimensions of the printed parts didn't matter so much provided they fitted together. The Orion is different, there's no adjustability which makes assembly much easier but means that sensitivity and accuracy are very dependant on the precise dimensions of the printed parts. Given thby Moriquendi - General
Simon has produced an assembly video, check it out. Youtube Idrisby Moriquendi - General
Got to keep innovating, it's the only way to stay ahead of the cloners .stls for the plastics are up on Thingiverse now. I'll be uploading a .step file of the PCB soon for those wanting to integrate it into their designs. Idrisby Moriquendi - General
Nope, noise cancelling isn't really an option here but it also shouldn't be needed. The module as it is should fit in a titan extruded but I don't think this PCB is well suited to the Aero, that said, I haven't put much thought into that yet. It might be workable in the configuration you've shown however there would be significant problems to overcome, primarily ensuring that the PCB doesn't ovby Moriquendi - General
Fixed, thank you. Idrisby Moriquendi - General
New Product Announcement! I'm please to be able to announce to you our newest product, the Orion module. This is the result of months of development and testing by myself and Simon as well as the invaluable feedback from a number of beta testers. There were a number of goals we wanted to achieve: Accuracy, the Orion module has been shown in tests to be up to twice as accurate as the Piezo2by Moriquendi - General
Batteries and power supplies have what is called internal resistance. Essentially this acts as another resistor in series with the load (your heater cartridges) and causes the supply voltage to drop as more current is drawn. Add to this the resistance of the wires and any connectors you have in your circuit and it's not that surprising that you're not seeing the performance you're expecting. Idrby Moriquendi - General
For VR2 any potentiometer with a value over say 10k will work, it's a potential divider so the exact value doesn't matter. For VR1you could try values between 200k and 1M between PZ+ and PZ- before you solder one to the board. Idrisby Moriquendi - General