DUEX 5 V0.8 TO DUEX 5 V0.11

paolozampini1973

@phaedrux many times I am here in front of the computer waiting for an answer for hours hours hours hours I can't take it anymore I think that after 20 days I am really attached or nobody is able to give me an answer or there is no one who interests them and I believe that in electronics is in programming and IT there is always always something to learn and believe me I'm really super annoyed with this mode I was very bad I didn't expect if someone wants to help me I'm also willing to pay for it we give us an appointment I don't know how You decide unless we speak once and for all no that a problem goes on for days and days days days

paolozampini1973

@dc42 please can you answer me that I want to talk to her

paolozampini1973

@phaedrux @dc42 when there are problems you find alternative solutions I do not understand why on such an electronics it has not been implemented even 5v for dir + and pul + at only 3.3v volts since the converters cost very little and I'm talking about the external drivers External Drives Most drivers run on 5 volts so What is the use of having a card version v 0.11 when the output is only 3.3v?

I think this is really a very serious thing because a card that really has everything in the end is as if it has nothing I also explain why I should put an external chip with the possibility of interference And then in any case it would remain really a very bad thing is the logic behind it. at the end I find the V 011 incomplete we see someone really want to talk about it since the engineer does not seem to me to be available to talk about this problem

especially if I want to disconnect the driver 7 and 8, high temperature messages start to come out which is false and I can prove it with facts it is easy to create a project and then market it but it is more difficult then to discuss the problems and I see that the engineer I don't seem to want to talk to myself. I'm very sorry

version 0.11 to 6 problems and I wanted to discuss with the engineer but it seems to me that he is not interested I am strongly sorry and disappointed

oliof

@paolozampini1973 just a reminder that it is the weekend and engineers deserve some rest as well.

The limitation of D7/8/9 to 3.3v is documented in the official 0.11 board description so whoever recommended upgrading from 0.8 to 0.11 board to get 5v control signals on those wasn't aware of this. I think there is no way around using logic voltage level shifters -- luckily they are relatively cheap and easy to get despite the chip shortage. (This limitation is true for many boards that use 32bit MCUs because 3.3v is their native voltage and in the overarching number of use cases, adding an optional voltage shifter that needs a toggle, and place on the board, is adding complexity and cost people will question at if they don't need it. In a quick search I found posts about this outside the Duet3D realm reaching back to 2017).

As an experiment to see if it helps with the high temperature messages, in addition to disabling the internal drivers by removing the jumpers, I would add M569 R-1 Pnn with nn being the driver number (so one line for 7, 8, 9) before reconfiguring it for external stepper driver mode with the timings.

paolozampini1973

@oliof first thing Add a converter would have cost € 0.30 But this is not the problem The problem is that adding an external chip can create interference And anyway I always say it is not how much you spend and how much it is So this is really a nice problem because an electronics of this level should also have this conversion first second disconnect the drivers Yes ok it's fine but I can't disconnect all the drivers because I have 8 modules to live the upgrade that I did for me was really a delusion

paolozampini1973

@oliof then if it is possible to have external Drives 95% of external Drives have all the input at 5 volts so modify and upgrade an expansion and not integrate the 5 times with a converter or with anything it is really a great lack

paolozampini1973

@oliof As for the high temperature messages they are absolutely false because I have checked the temperatures AND the temperatures are at room temperature then there is another factor to consider it cannot give me high temperature when I put it to zero but the drivers So there is a very basic mistake The fact is that the engineer does not make himself heard leaves me a lot to think and I repeat I have an experience of 29 years on electronics and IT

paolozampini1973

@oliof the cost is not important but it would affect a maximum of 3% so what are we talking about building an expansion That is truly exceptional but then you get lost in a glass of water or rather in a drop of water because by installing an external chip you create interference problems and the masses are not reliable So in all this I find myself now not only with these problems there are other problems that I do not want to lick because the biggest problem is me this now is all this to solve a problem of loss of pace and when the engineer seems to me he does not make himself heard and it seems to me he is not interested I do not know other people What they do with this electronics but I have invested ten thousand dollars and allow me I am very annoyed and then we do not make a question of price because we are talking of € 0.30 in assembly stages at that point instead of charging $ 150 I would also pay $ 170 but at least I have a truly complete product and I have no problems

oliof

@paolozampini1973 it is not about component cost, and with 30 years of engineering experience you know that very well. Don't forget I am volunteering my time here and I am only willing to accept a modicum of abuse before I spend my personal free time elsewhere. So please, let's focus on the things that can be done instead of those that could have been done -- unless all you want to do is air your grievances, but then I will step out of the way. It is your choice.

paolozampini1973

@oliof then on the documentation it is written I recommend we put the power cable no more than 100 cm and then you say no to solve this problem we add it is an external chip but how do you say that it takes a properly shielded cable for external signals and then we do this nonsense but now Tell me is it really I'm saying bullshit It doesn't seem to me that this problem is completely logical and I repeat another time I would like to talk to the engineer and I repeat another time I have been in electronics for 29 years and I have done great works I can't name companies but they are well known to the world anyway, so I don't know the latest and I also know something about programming

oliof

@paolozampini1973 You don't even leave people 10 minutes to compose a reply before you repeat your accusations, that does not make for a good Saturday afternoon experience. I wish you the best of success with your project, but my volunteering time here has come to an end.

paolozampini1973

@oliof Yes sorry I don't have it you can because Aida is not facing you and that I'd like to talk to the engineer and I'm sorry about my tone but it doesn't seem to me that I'm saying a stupid thing now I have to solve the problem I have a investment ten thousand dollars Stop because I had only and only the problem of losing the pitch That's why I upgraded to the new version of the expansion

droftarts

@paolozampini1973 if the drivers you need to use must have 5V signalling, you should use the Duet Expansion Breakout Board, which has the level converters built in. See https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_Expansion_Breakout_Board

If you must have the expansion the DueX supplies as well, you can run both at the same time, using a ribbon cable that has an extra connector on it.

Ian

paolozampini1973

@oliof Anyway thanks for your interest what do you think you can do to solve the problem of losing pace and above all Anyway, the upgrade from 0.11 still has too many problems I don't even want to talk because I haven't solved the problem anyway and now six problems of which 4 more serious plus 2 less serious than before I did not have alone and only the loss of pace nothing more everything worked

paolozampini1973

@droftarts yes Thanks for the advice but I think that you have not followed all the past problems I 8 motors to manage including X and Y are connected via a dm860h is a printer that you need to be able to do some printing peculiarities and therefore I already have the expansion 0.8 and 0.11i upgraded with 011 for wheelbase problem because engineers told me 08 was not designed for external drives ok i bought 0:11 but now i have more problems than before

paolozampini1973

@droftarts problem is that I having the external drivers dm860h worked all alone that I have problem of loss of pitch when it goes to make a type of seams This obviously if the air if it is not powered at 5 volts It is natural that it creates such problems but now the problem I how I solve it by putting a 74hc and making a connection that honestly is not a correct thing because in any case create interference or that I do I have a printed circuit created because then we must also consider having good masses because if you do not create some interference

paolozampini1973

@droftarts what I ask at least to speak with the engineer or with a person who knows how to answer me because I have been going on with this problem for 20 days and you do not give answers and you run away from the problem you have to solve it otherwise every time in the end yes it just spends some time and in any case I repeat there are problems to solve I don't know if anyone is interested but I would like to talk to the engineer which I cannot speak
and I repeat before I had only one problem and it wasn't even serious now I have 6 problems I would be willing to throw away ten thousand dollars but I want to talk to the engineer or someone who solves the problem and not find some sticky wires I like work the professional way i am very annoyed after 20 days i think it would be anyone

droftarts

@paolozampini1973 surprisingly, I’ve read all your posts, and the ones in the other thread. You need 5V signalling. You need voltage level shifters. There’s no others way. The eBoB board has them on it, never had any complaints about interference.

Ian

paolozampini1973

@droftarts But how do I insert the expansion you tell me when I already have an expansion I have 8 engines to manage the expansion you sent me I cannot connect it where I connect it I already have two ex 0.11 +0.8

paolozampini1973

@droftarts https://docs.duet3d.com/Duet3D_hardware/Duet_2_family/Duet_Expansion_Breakout_Board
if I connect this expansion I can no longer connect the duex 5 0.11 or 0.8 if there is another way tell me I have to manage 8 nema 17