3A stepper motor driver
Hi all, I'm interested in making a 3d printer. I started looking for stepper drivers and decide to choose the drv8825. Now i started to look for stepper motors and all that i find in ebay are rated to...
View ArticleRe: 3A stepper motor driver
... all drivers with 5V/TTL-input for STEP+DIR can be used - I'm controlling 325VDC-steppers+drivers with RAMPS 1.2, but had to change the pull-up-resistors as the inputs were meant for 24V input...
View ArticleHEAT BED PROBLEMS
Hello! I have been round and round with this heat bed and can not seem to figure it out. I have a MK@a 12v bed connected to ramps 1.4. The thermistor is working I have tested it. When i try the M303...
View ArticleRe: 24V to 12V Heater
Just a note here: PWM only limits the power you draw, and NOT the instantaneous current drawn. This is because PWM is digital (pulse width modulation) and is all about switching something on/off...
View ArticleRe: HEAT BED PROBLEMS
When you tested the thermistor, did you measure the ohmic value? What did it read? Does it show room temp when the bed is cold? Have you got a heat sink on the Mosfet for the bed? Do you have thick...
View ArticleRe: 24V to 12V Heater
@Traumflug: Yes I have heard from a heater manufacturer saying, heaters which he supplies can work from 5V to 24V DC why I have this question is, I saw a heater became red hot when connected with 24V...
View ArticleRe: HEAT BED PROBLEMS
While testing with Multimeters have you checked the resistance of Probe, Some probes will have resistance around 0.6 ohms to 1.5 ohms some times we miscalculate this as original reading, for safety...
View ArticleRe: 24V to 12V Heater
QuoteCefiarThis means: You still need to have wiring (and electronics) that can handle twice the current if you're using a heating element that was previously used at 12V, when using it at 24V. If you...
View ArticleRe: 3A stepper motor driver
VDX is right. Also note that 2.8 A stepper drivers don't neccessarily need a 3 A stepper driver. They work with 1 A drivers just fine. Torque is reduced accordingly, of course, but motors specified...
View ArticleRe: 3A stepper motor driver
QuoteTraumflug VDX is right. Also note that 2.8 A stepper drivers don't neccessarily need a 3 A stepper driver. They work with 1 A drivers just fine. Torque is reduced accordingly, of course, but...
View ArticleRe: 24V to 12V Heater
Traumflug: I've had fuses blow in much less than a second when drawing more current than they're expected to carry, especially if they're fast-blow types. Sure, PTC fuses may take this (but then...
View ArticleRe: HEAT BED PROBLEMS
Thanks for the replay's. Waitaki, Themistor does read room temps. When I tested it, it is reading 94.2 ohm, ot sure if that is good. I do not have a heat sink on the Mosfet should I have one on it. It...
View ArticleMarlin electronics
Does anyone know where i can get the marlin electronics? I already searched online, in github, but i'm not able to find the marlin electronic that is described in reprap comparison of electronics...
View ArticleRe: 3A stepper motor driver
QuoteTheDeadLives VDX, did you had to modify anything in the code? ... no, the electrical 'compatibility' (5V-level) and equal pin-function (STEP+DIR) is enough ...
View ArticleRe: 3A stepper motor driver
Grateful for your reply. My only problem now is if L6470 will work, since it uses SPI
View ArticleRe: Marlin electronics
Marlin is not electronics. Marlin is firmware that resides in your arduino processor. Marlin is compatible with MANY different electronic boards - RAMPS, RAMBO, etc.
View ArticleRe: Marlin electronics
Yes, i know that Marlin is a software. But, if you check this page: [reprap.org] you will see that exists marlin electronics. If you go to github, and search by Marlin II there is a photo of the...
View ArticleRe: HEAT BED PROBLEMS
That heatbed is the one I use and its trouble free so no reason to abandon it. The Ramps should handle the heatbed although its sinking a lot of current! Q. If you are using an XT power supply, have...
View ArticleRe: HEAT BED PROBLEMS
Waitaki, I am using a 1000watt atx psu and yes it has a load on the 5v line. When I turn on the D8 line , I also ran the motors and the hot end just to see if there was a power drop, and it was good....
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