Hello friends, I subscribed to this forum in November 2014 and with the help of the good guys that I found here, built from "scratch" one of my two 3D printers: a Prusa Mendel I3 with Arduino and RAMPS 1.4. All this time I believed that the fan connected to D9 was active only when the printer was making delicate or detailed parts like bridges or steep angles that needed to become colder and hardeby veteran54 - RAMPS Electronics
Hello there, I have made two 3D printers from scratch including one Prusa I3. If you send me a picture showing the problem, I may be able to help you. There are always solutions. Vicby veteran54 - General Mendel Topics
Hello friends, With hard work and multiple chanllenges I've been building my prusa i3 with ramps 1.4 and card 2650. Finally I finished and connected everything correct according to the graphics in this site. The firmware assigned COM3 as the port for Arduino 2650 (according to device mananger in Windows 7) , and all the information regarding the assigned port is that is working properly and doby veteran54 - Reprappers
Mi PLA lo he dejado sin usar menos de dos semanas y de repente se quebró solo, luego trate de doblarlo y se quebró con poco esfuerzo. Mi pregunta es si existirá alguna manera para volverlo a su estado normal?by veteran54 - Printing
Mi printer es una prusa mendel y me dispuse a construir un drone del cual ya tengo la parte del fuselaje terminada con PLA, sin embargo los cuatro patas y pies de aterrizaje pesan diferente aun cuando se ven relativamente iguales. Es importante que todas las partes iguales pesen lo mismo para que el aparato no se desequilibre mientras este volando. Alguien me puede decir en que consiste que uno dby veteran54 - Printing
Hola Diogenes, volvi a hacer otra impresion muy grande y la impresora trabajo sin detenerse otra vez por mas de tres horas. Los pings solo estan unidos, no los he soldado porque tengo tengo mis cosas de electronica soterradas en una bodega, no las uso desde hace muchos años cuando que hacia testeos con decodificadores de satelite y tarjetas con chip. Ahora estoy tratando de aprender como continby veteran54 - Printing
Diogenes, me decidi a juntar los dos pines tal y como lo hiciste, y creo que fue un exito. Hice un printing muy grande que duro casi cuatro horas para completarse aun con buena velocidad, la printer no se detuvo y trabajo perfectamente. Esta es la mas grande y una de mis mejores impresiones. Estoy empezando a creer que eres un genio. Muchas gracias. Seria muy bueno si compartieras mas experienciby veteran54 - Printing
Gracias Diogenes, ahora ya supe que mi board es : "Melzi 2.0 1284P" (eBay hybrid) 1284P A4988 (Various eBay vendors ) 2012-present. Lo supe por el numero de los 4 steppers que es A 4988. Ahora voy a estudiar el esquematico a ver si el pin once del atmega coincide con el el pin que soldaste al Ground. La maquina se me ha detenido despues de estar mucho tiempo trabajando con un printingby veteran54 - Printing
It happened the same to me when printing very big first layers (7" by 4.5") and it affected maybe a 25% or 30% of the area. I put the fan at 100% and reduced the speed at minimun (100 in my manual control) that gave chance to the last injected line to get hard before the hot end comes back and inject the next hot line. This change made a very good improvement, though very few overbuilt is stilby veteran54 - Printing
Check your teflon guide tube and make sure that the extreme of it that is close to the hot end is perfectly cut even and make full contact with no possiblilities of fugues that cause odd printings. This is only to disregard the extruder as a possible cause.by veteran54 - Printing
Sort of the same thing happens here and I believe that is because when the hot end arrives to the perimeter, comes back right immeditely when the last line injected is still hot and soft and it atracts more hot plastic from the hot end to the layer creating the idea that the hot end is injecting more plastic. I reduced the speed and put the fan to work 100% in those apparently ramdon spots whicby veteran54 - Printing
Estaba viendo detenidamene con mi lupa el chip de mi board y es lo mismo que el tuyo 1284p lo cual se me hace raro por que mi board Melzi ardentissimo, tengo entendido que pertenece a la version 1 y tu board es version 2 . No se si estoy en lo correcto. Ademas veo que todas la patitas de mi chip estan soldadas al board, y ninguna esta suelta o cortada. Me gustaria que me dieras tu opinion acercaby veteran54 - Printing
do not forget to check with the drop leveler both rails were the extruder travels back and forth.by veteran54 - Printing
Make sure that the springs of the bed are as loose as posible, use a drop leveler to make sure that the bed is leveled both X and Y points, then try moving very carefully the microswitch that stops the motors of the extruder, until when stopped by the microswitch the extruder slightly touches the bed and make a milimetric fraction of pressure on it; have no fear of breaking the glass since theby veteran54 - Printing
My RepRap is making now good prints after some issues were corrected. This forum has been very helpful for me. However, anytime, on the first printing or after one or two printings. Repertier crashes and I lost my work and waste some PLA. The message on my computer is that "repetier stopped working and windows is trying to identifiy the problem" Windows never find anything and the next message iby veteran54 - Reprappers
Unfortunately can not attach a pic in this forum. Do not understand the reason.by veteran54 - Printing
My Prusa Mendel finally worked fine and made me happy after some printing issues were corrected. Now the small prints of my proyect look very good, so I decided to go for the biggest part of it which is completely flat and its dimensions are 7" by 4 1/2". Aprox the 75% of the layer was printed very good, but some spreaded excess of PLA started to build up on that first layer.. The extruderby veteran54 - Printing
Pude ver en el diagrama de Melzi un pin junto a la conexion de USB con las letras GND impresas en el board. ¿Debo soldar alli mi alambre hacia tierra?by veteran54 - Printing
Diógenes, Me parece que tengo ese mismo problema que tu tenias. Mi printer es una Prusa Mendel con board Melzi ardentissimo y hace muy buenos trabajos, pero a veces se detiene enmedio de un trabajo y aparece en la computadora mas o menos este mensaje: "Repetier has stopped working, a problem has occurred, wait for Windows to detect the problem" por supuesto que Windows no detecta nada y luego apaby veteran54 - Printing