QuoteOne-T le test reste tout de meme tres explicite , quand tu arrivera a des mouvement de 16 voir 32hz sur une imprimante , ca sera une fusée Le probleme c'est que bien que les cornieres bougent, aucune ( ou presque ) force n'est appliquée dessus. Quand elles bougent dans une imprimante 3D, l'inertie cause des forces tres importantes ( dues au poids de la tete en mouvement ) qui sont absentby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Le test que tu réalises n'applique pas ( ou tres peu ) de force sur la charniere, donc il ne veut pas nécessairement dire grand chose pour les gens qui se posaient la question ici. C'était tout l'interret du test directement sur une machine entiere ...by arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Super super cool, joli boulotby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
QuoteM_Xeno QuoteDéclaration de principes OSHWA 12. La Licence doit être Technologiquement-neutre Aucune disposition de la licence ne peut être fondée sur une technologie particulière, une pièce ou un composant spécifique, un matériau, ou un style d’interface. Est-ce que mon travail, intrinsèquement basé sur l'exploitation du matériau Hylite, ne contrevient pas à ce n° 12 des déclarations de prby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
QuoteM_Xeno @arthurwolf Je sais que tu es très impliqué dans la défense du statut open source, et que tu as souffert d'être beaucoup copié. Ca n'est pas que moi qui defends les valeurs de l'Open-Source, c'est le projet Reprap en entier. Et je ne souffre pas enormement de la copie, c'est bien pire pour d'autres. Et le probleme ca n'est pas la copie a proprement parler : on sors les choses sous lby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Quotequik66 qu appele tu la licenceby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Quotequik66 QuoteM_Xeno Je vais réfléchir à ce test, mais je ne le promets pas. Qui a déjà fait tourner une imprimante 1000 heures en continu ? J'ai bien peur d'être confronté à d'autres problèmes. Il me faut une alim sur UPS, sinon, sur 1000 heures, je suis sûr d'avoir des problèmes de microcoupures, dans mon bled. C'est une drôle d'impression, de devoir faire quelque chose d'aussi absurde, queby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
QuoteM_Xeno Le test que m'a suggéré Arthurwolf (faire inlassablement une croix au centre de la machine) ne permet que de répondre de façon binaire à la question : "1000 heures?". C'est la question vraiment interressante pour les gens : ma machine va-t-elle durer au moins un an d'utilisation ? C'est une question qu'il est interressant et important d'adresser. Au passage, tu réponds a toutes leby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
QuoteM_Xeno Je vais réfléchir à ce test, mais je ne le promets pas. Qui a déjà fait tourner une imprimante 1000 heures en continu ? J'ai bien peur d'être confronté à d'autres problèmes. Il me faut une alim sur UPS, sinon, sur 1000 heures, je suis sûr d'avoir des problèmes de microcoupures, dans mon bled. Meme si la machine s'arrete une heure tous les jours, ca ne change rien au test. On parle juby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Le fait que les gens sont "racistes anti-plastique" ( ) est peut-etre vrai, mais ca ne prouve pas que le concept est bon pour autant. Il n'y a pas de preuve dans un sens ou dans l'autre, donc il faut obtenir plus de données. Il faudrait vraiment que tu fasses le test que je suggere ( ou qqchose de similaire ), je pense que ca aiderait vraiment enormement a convaincre les gens ( si tu comptes fby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
Chouette concept Par contre 80000 mouvements c'est essentiellement rien du tout. Il est courrant d'imprimer des pieces avec plus de 10 changements de direction par seconde, sur les modeles a haute resolution. Dans ce cas la, 80000 mouvements c'est deux ou trois heures d'impression ... Avant de dire que ton concept est bon, et que ca ne va pas s'user exagerement, tu devrais tester plusieurs millby arthurwolf - RepRap Groupe d'Utilisateurs Francophone
QuoteRedem Just a thought, would it be possible to negate the temperature noise issue to some degree by sampling ADC more often and take a median or average value? (essentially filtering the temperature in software)? Smoothie firmware already does that. It helps but not having the correct ADC wiring is still going to hurt the results.by arthurwolf - Controllers
Quoteo_lampe I suggest soldering the drv8825 drivers to the bottom layer next time and keep the heatsink on the top layer. That way, you get the "best of both worlds" -Olaf Yep that's definitely a better way. Some DRV8825 drivers with the pololu footprint already do this. It makes manufacturing a bit more complex though. Quoteo_lampe When I asked if your opinion is totally unbiased, I just wantby arthurwolf - Controllers
Quoteo_lampe @arthurwolf, I´m wondering if your negative assumptions about "overall bad design" are totally unbiased? These are not assumptions, they are facts. Facts are by definition unbiased ( even if provided by a biased person ). Fact : They did not properly use the analog ground for their thermistor inputs. This is bad design. Fact : They did not design the PBC planes to heatsink the fullby arthurwolf - Controllers
Quoteflyway97 arthurwolf : you are right,the heatsinks on the bottom of 8825 is better. But when the chip's temperature too high(up 70), the temperatue on the two side almost the same. That does not matter one bit : it's still very bad design to cool from the top. The bottom is directly connected to the chip, while the top is insulated by the enclosing plastic, so the effeciency of the coolingby arthurwolf - Controllers
Quoterocketwiz Also what's with the heatsinks on the 8825's? Shouldn't they be on the (possibly too small) solder vias on the other side? Yes, putting the heatsinks on the top is definitely very bad design, from somebody with no experience in this, who has not even cared to read the datasheet for the drivers ( or understands how they work ). This is the same attitude that caused the temperatureby arthurwolf - Controllers
Quotedc42 Talking of Smoothie 2, any chance you can increase the values of the pullup resistors on the endstop inputs? My IR Z probe board has resistors in series with the output, and this is fine with the pullup resistors on most boards, but the low value (1K) pullup on the Smoothie is too low for it. I don't want to use lower value output resistors, because they protect the board when the userby arthurwolf - Firmware - mainstream and related support
Quotedc42 Quotearthurwolf ...( I heard somebody say Duet actually uses SPIO to access the SD card, which would be nice if it is true, maybe dc42 can comment on this. The Duet uses the Atmel HSMCI interface. I don't know a lot about it, but according to the datasheet, "The High Speed Multimedia Card Interface (HSMCI) supports the MultiMedia Card (MMC) Specification V4.3, the SD Memory Card Specifby arthurwolf - Firmware - mainstream and related support
QuoteElmoC The fact the the firmware continues to allow movement in the direction of an end stop, even though the end stop is triggered. That is an option you must enable. Please see the endstop documentation, in particular the limit switches part. QuoteElmoC I busted an end stop because of that. Then when I decided to try and replace the end stop with a sensor that could be used for both and eby arthurwolf - Firmware - mainstream and related support
What do you not like about Smoothieware ?by arthurwolf - Firmware - mainstream and related support
Wow, lots of people know Smoothie stuff here nowby arthurwolf - Reprappers
QuoteDejay Damn. I just got my SBase and now I read this. So you would have to use wires to attach the spots with the legs of the R-78E5.0-1.0 right? I only found this for like 11€ at a consumer electronics shop (conrad). We have it for 5€ here : I believe you can find it for even less at digikey and friends.by arthurwolf - Controllers
Quoteflyway97 add heatsinks on Drv8825, just as frodriguez96 said. . Those chips are not designed to be cooled by heatsinks. Read the datasheets. They should be cooled by the PCB itself, which should have enough layers/copper weight to properly cool them. In any case, if you end up having to use heatsinks due to bad PCB design, they shouldn't be used on the top of the chip ( where they haveby arthurwolf - Controllers
After some discutions on IRC, there was a problem with running 3.5A steppers at 2A ( and possibly overheating, and a false contact somewhere ). He'll be using external drivers instead of the on-board ones ( which fits his stepper motors much better ), and maybe try replacing the on-board drivers to run extruders.by arthurwolf - General
Quoteflyway97 To CapnBry , Thanks for your trying our MKS SBASE Smoothieware-compatible board and find the problem in maintaining hotend temperature.After we compare the origenal Smoothieware oard and our MKS Sbase. We find that when we use the DC-DC converter R-78E5.0-1.0 as origenal Smoothieware, it is OK. And our DC-DC conver L5970D is using in our MKS series Board for 2 years with Marlby arthurwolf - Controllers
QuoteJustAnotherOne I'm working on a Firmware. I did some test with the Discovery Board. There is a lot of stuff still to do. The ST Documentation is rather bad. . This looks like you are departing from G-code as the communication protocol, what is pushing you to do that ?by arthurwolf - Controllers
There has been a lot of talk about STM32F4-based boards over the fast 4-5 years. But none has been made so far ( though several have been started ). It seems the main problem is firmware : what do you intend to run on your board ? As far as I know there is no Reprap firmware currently ported to STM32F4.. Cheers.by arthurwolf - Controllers
Did you use the M500/M503 commands ? Is there a config-override file on your SD card ?by arthurwolf - Controllers
Hey ! If you give the same steps per mm for X and Y to Smoothie, it should print circles. This is very straightforward inside Smoothie, no reason whatsoever for it to print ovals. I would look for the source of the problem elsewhere : mechanical issue, or a slicer issue. Cheers !by arthurwolf - Controllers
QuoteEmbed Iv tried everything to get this smoothieboard to work. Reversing wires on steppers, changing config files, modifying gcode itself, wiggling the antenna on my truck etc etc. I'm going to try 1 more thing before it goes on the junk shelf. In most programs ( I've downloaded about 16 million of these it seems to get this to work ) it ask you what firmware type or what machine type it is. Nby arthurwolf - Reprappers