Seems it was RAMPS/Arduino seeing noise instead of sensors. Fortunately, I had another Arduino.by Fizpok - Reprappers
Well, actually, I don't think it is stop. When printing is about to start, the extruder goes down, then, 5-10 cm from the stop, it stops and begins "printing" (just like that - in the air). Same soft is used on an identical printer, so it is not softwatre.by Fizpok - Reprappers
The problem just got more complicated. I can provide power via USB, and Arduino runs the program. I can not provide power via Jack. Diodes go on as should, the program does not run. But once, accidentally, I used 24V power supply to Jack. And it worked (I turned it off as soon as I realized, but...) My current hypothesis is that The on-board power supply suppresses the outside supply, unless it iby Fizpok - Reprappers
Particularly, is this true:by Fizpok - Reprappers
Hi, I have a reprap, working except Arduino does not get power from RAMPS. If I provide it to barrel, works ok. My question is, how to power Arduino correctly in this situation. 1. Using an extra power supply is ugly (but works). 2. I want to wire power from RAMPS to Arduino. Maybe to barrel, maybe to pins, maybe to USB. I need to know which is best, preferably, using RAMPS - to Arduino via pinby Fizpok - Reprappers
0V in both cases. What does it mean? Quotedc42 You could use a multimeter to measure the voltage between the gate and source terminals of the MOSFET. That's the two outer terminals. It should be 5V when the bed heater is supposed to be on, and 0V when it is supposed to be off.by Fizpok - Reprappers
I'll try mosfets. As for Duet WiFi and likes, the only problem is that I already have figured out everything about Arduino-RAMPS As for my case: what else should I check if D8 not working? I mean, before changing the mosfet? What else can burn: resistors, wires on RAMPS, Arduino's pins - and how to test it?by Fizpok - Reprappers
Any schematics for SSR dc to dc that you can recommend? I thought that if the R of the hotbed is within 2-4 Ohms, it is fine. What do you mean by amperage? I mean, voltage is fixed, resistance is fixed, what can go wrong with amperage? Also, what can poor connectors do? Do you mean wires from D8 to bed? Quoteggherbaz Well they are very cheap right? That only means poor quality. That said it easby Fizpok - Reprappers
Which mosfet should I use and which 32 bit board? Quotedc42 If your bed heater mosfet is getting hot, a much better solution is to replace be MOSFET with a better one. The MOSFET specified in the ramps documentation is a terrible choice. A few of the more expensive ramps boards are built with better MOSFETs, such as IRLB8743. Better still, if you can afford it, ditch the Arduino/ramps and get aby Fizpok - Reprappers
It is a bit funny that I ask two questions in a row, one for heatsink for D8 and another one about D8 dead Yes, they are related Anyway, my D8 mosfet is dead. This is a second time, and the question is: how reliable are RAMPS (China). Is it NORMAL to kill two in a year, and if not, what am I doing wrong? Also, it is, probably, not overheating anyway, as it worked fine, and then simply refusedby Fizpok - Reprappers
Hi, As I understand, I need a heatsink for D8 mosfet. What kind should I use? For example, if you look at ru.aliexpress.com for heatsink for mosfet, you get different sizes, plus some of them use bolt and some - a sticker. Anyway, suggestions, comments or a direct link at Ali are welcome. Thank you.by Fizpok - Reprappers
Do you mean using aluminum instead of glass?by Fizpok - Reprappers
What temperature of a bed should I set if I use the Mylar foil?by Fizpok - Reprappers
I got tired with printed parts deformation, so I am looking for a way to include my Prusa i2 into a box, to reduce parts bending / increase their sticking to the table. Could someone suggest some schematics for it? Like plywood, or something? What should be a temperature inside? Any additional things I need to know on the subject? Thanks. By the way: 110 C works fine with ABS heated bed. As Iby Fizpok - Reprappers
Thanks. It worked!by Fizpok - Reprappers
After playing with pot, I managed to make extruder spin with no pins. As expected, it is even faster. So, the question is: pins do work, but speed is too fast. Where in soft should I ook for problems?by Fizpok - Reprappers
Ok, in the E1 slot, same picture. Extruder spins fast. Very. Any suggestions?by Fizpok - Reprappers
Question: ok, I have disabled the first slot for extruder and installed driver in the secons slot (E1), and connected extruder to it. Should I somehow tell the software to send extruder commands to the second slot instead of first? I am going to use: #define E_STEP_PIN 36//26 #define E_DIR_PIN 34//28 #define E_ENABLE_PIN 30//24 #define E_1_STEP_PIN -1//36 #defineby Fizpok - Reprappers
A little correction: I don't need to disable second extruder - I need to ENABLE second extruder, to disable the first one, and to connect extruder to a second slot instead of first. So I will ser E_... to -1, instead of E1by Fizpok - Reprappers
Hi, I am using Arduino Mega / RAMPS. The extruder's motor has all 3 jumpers under the Pololu shield, but it runs FAST, as if no jumpers (and does not run at all with no jumpers). I have another reprap, and when connected to its shield (same firmware), the motor works fine. So I conclude that something is wrong with a) driver, b) RAMPS and c) Arduino. But using another driver does not solve a probby Fizpok - Reprappers
Поискал инфу по вспененному силикону, как материалу для утепления столика снизу. Охренел. Теллур, люди! Это как? Завод EUROFOAM (Италия) для производства силикона использует передовое оборудование и труд квалифицированных специалистов. В процессе производства здесь поддерживается чистота воздуха, как на хлебном производстве. Для получения вспененного силикона в исходный материал (синтетический иby Fizpok - Reprappers
Насчет толкателя прутка. Это когда пруток подается от отдельно стоящего экструдера через тефлоновую трубку? Как у них с точностью? Ведь если сделать внутренний диаметр трубки точно 1.75, будет трение, даже в тефлоне, а если нет - будет демпировать внутри, и снизит точность подачи. Или нет? Я давно на эту схему поглядываю.by Fizpok - Russia RepRap User Group
У меня Prusa i2, которую я собираюсь переделывать. А если сделать без верха и низа, получится труба, снизу будет притекать холодный воздух.by Fizpok - Russia RepRap User Group
У меня мотор на экструдере, не удаленный... Да и остальные моторы - как их изолируешь, если шкивы ?by Fizpok - Russia RepRap User Group
Well then, the question changes: what should be the bed temperature for ABS in such a box? I am pretty sure it should be 110 for good adhesion. Do I need to control an extra parameter - the temperature in the box? How is it usually done technically?by Fizpok - Russia RepRap User Group
Для лучшей печати и равномерного нагрева, принтеры можно поместить в "шкафу". Там нет проблемы с отслаиванием детали и т.п. Вопрос такой. Моторы и проводка ведь тоже будут внутри, а там, грубо, 110 градусов. Как электроника это выдерживает, и надо ли что-то делать дополнительно?by Fizpok - Russia RepRap User Group
У вас головка экструдера болтается, либо люфт в экструдере, либо вокруг где-то.by Fizpok - Russia RepRap User Group
Скажу сразу - ситалл очень чувствителен к температуре, чуть холоднее, адгезия падает. Так что столик должен быть хорошим, и блок питания тоже. В остальном - прекрасная вещь. Но все-таки, надежнее лак для волос, самый дешевый. К нему и адгезия больше, и мучаться наклеивать, как с кэптон, не надо. me-and-my-3d.comby Fizpok - Russia RepRap User Group