Re: DC motor extruder control
What are you using as a dc motor controller? as it depends on what signals its expecting. This is what we used to use [reprap.org] A3949 H-bridge motor drivers so there may still be some legacy code...
View ArticleRe: DC motor extruder control
Sorry for being so dry on the details, to be honest im not even sure where this will go since its mostly a development / experimental rig (i like tinkering with "unconventional") stuff. My ideea was...
View ArticleStepper driver help
I don't know if this is posted in the correct forum, this just looked like it was pretty close to what I need. I have a RepRapGuru Prusa i3 diy kit that was working wonderfully up to this morning. I...
View ArticleRe: DC motor extruder control
Extruding with a simple On/off signal to a DC motor? No speed control or encoder? That'll be fun, make sure you have a camera at hand :)
View ArticleRe: Stepper driver help
It could be an electronic problem, like intermittend contact of the motor plug or the microstepping jumpers. But also the filament drive can cause a stuttering motion when the idler bearing doesn't...
View ArticleRe: DC motor extruder control
Oh you bet i'll have a camera at hand when trying "unortodox" stuff :D But as i said its not just about extruding, its abot being able to control other things, say for example if you have someting...
View ArticleRe: Stepper driver help
I think it might the gear in the extruder that is pulling the filament. It seems to be stripped out. I got the extruder extruding finally, I installed a new driver on the second extruder pins and...
View ArticleRe: Stepper driver help
Ok, then it is a grinding problem. Have you tried to manually push filament through the heated nozzle? Just to make sure, you don't have a clogged nozzle ( too).
View ArticleStepper Help
Alright. I am making a delta printer. Currently I am running into a lot of problems. The largest of which are the steppers. We are using a rambo 1.3L board. We are using repetier as our firmware...
View ArticleRe: Stepper driver help
I made a pretty noob mistake. When I changed my stepper driver, I forgot to jump the board for microstepping. So instead of super small movements, it was grinding away at my filament until there was...
View ArticleRe: DC motor extruder control
I don't know the rambo card but look on the schematic for a fan pin that is driven through a transistor. You can hook up a dc motor to this and control the speed with pwm the same as you control a...
View ArticleRe: Stepper Help
Could you choose the right "motherboard" setting for the Rambo board in repetier? You might have assigned pins wrong...
View ArticleRe: DC motor extruder control
Ty for the info george i wil try that, To elaborate on what im trying to do I used to work in a factory where we had a machine that was embossing models on different materials using a kind of silicone...
View ArticleDegrading performance of 0.9° steppers
I've bought a batch of 42BYGHM810 steppers a while ago and I was pretty happy with their behavior. But over a few working hours they seem to cause problems. It feels, like they've lost the permanent...
View ArticleRe: Degrading performance of 0.9° steppers
What electronics and power supply voltage are you using? Missing steps after a period of use could indicate overheating stepper drivers. 0.9deg motors typically need 24V power unless you restrict them...
View ArticleRe: Degrading performance of 0.9° steppers
QuoteDust Are you stepper inside a heated chamber? Only one stepper is in an enclosed printer, but it's not heated. That one was on 12V until it stopped extruding at all. The drivers ( and I tried...
View ArticleRe: Degrading performance of 0.9° steppers
... stepper magnetization degrades when heated above 80 degC -- with some cheapish motors this will start even at above 60 degC ...
View Article0.4A Stepper motor vs 1A stepper motor using A4988 drivers? Motor Stalling...
I'm having a problem with my extruder stepper motor stalling for retraction speeds over 10mm/s. I still have retraction problems so would like to increase this if possible. I don't have problems with...
View ArticleRe: 0.4A Stepper motor vs 1A stepper motor using A4988 drivers? Motor...
... its the current and the voltage together, what's defining the max possible speeds - higher voltages allow faster steps, and lower inductivity (with lower coil resistance or higher current ratings)...
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