Re: RAMPS for Due!
...and one more: In trying to calculate a new operating point for the TLV431 used to clamp the ADC voltage (the BeagleBone has 1.8V Analog inputs), I thought I'd check the existing operating point. It...
View ArticleWiring Rumba (questions)
Hi folks, I've some problem wiring my rumba board with the stepper motors. According to the Board the cables shall be connected this way: 1B (Black), 1A (green), 2A (Red) 2B (Blue) Unfortunately my...
View ArticleRe: RAMPS for Due!
Quotecdsteinkuehler Another question: I notice the LEDs for the high-current MOSFETS are driven by +5V instead of +V_POWER, and I'm wondering why. Typcical LEDs have very low reverse voltage ratings...
View ArticleRe: RAMPS for Due!
Quotecdsteinkuehler ...and one more: In trying to calculate a new operating point for the TLV431 used to clamp the ADC voltage (the BeagleBone has 1.8V Analog inputs), I thought I'd check the existing...
View ArticleRe: RAMPS for Due!
Quotebobc I'm confused by your comment though, the TLV431 isn't intended to generate 3.1V, but to sink current if the voltage on OV_REF exceeds 3.1V. That was my understanding of how the protection...
View ArticleRe: Wiring Rumba (questions)
Your wiring order looks good, maybe there is some other reason the motors don't turn?
View ArticleRe: RAMPS for Due!
Quotecdsteinkuehler Quotebobc I'm confused by your comment though, the TLV431 isn't intended to generate 3.1V, but to sink current if the voltage on OV_REF exceeds 3.1V. That was my understanding of...
View ArticleRe: RAMPS for Due!
Quotebobc Yes, that IS what is intended, e.g if the thermistor input is accidentally connected to 12V. Then it seems like the circuit should work as designed. I'll have to review this to see what I...
View ArticleRe: Wiring Rumba (questions)
Sorry, just an Idiot forgetting to set the jumpers. Ignore my request :-/
View ArticleRe: Arduino Uno Electronics
Quotefgascon Thanks for the advice. I guess that if you have min endstops and configure the size of the RepRap's printable area, then the software should know the max. I will put my enables all on the...
View ArticleMegatronics 2.0
Hallo, ich hab ebenfalls ein Megatronics 2.0 Bord leider tut sich da überhaupt nicht mehr. Und ich bin noch nicht so in der Elektronik drin das ich einzelne teile testen könnte. Gibt es vielleicht...
View ArticleNewbie Help Needed - Change Stepper Driver
Hi guys, I posted the start of my problem in the General part of the forum, now I am hoping to move it here for more detailed help. I am new to the Reprap world and am finishing my first build of a...
View ArticleRe: Newbie Help Needed - Change Stepper Driver
Just edit your pins.h In more detail. In configuration.h you set motherboard = 33 Find that in pins.h starts at [github.com] The extruder pins are defined [github.com] so take #define E0_STEP_PIN 26...
View ArticleRe: Newbie Help Needed - Change Stepper Driver
Thanks!!!!!!! The example was perfect!!!!
View ArticleRe: Newbie Help Needed - Change Stepper Driver
You are a GENIUS! FIXED My PROBLEM!!!!!!!!!!!!!! THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
View ArticleElectronics help needed - rather urgent!
Hello all, I'm currently designing a 3d printer that will use 2 linear actuators (these badboys)to extrude paste from 2 syringes. My question is this: Will they operate with a normal 3d printer setup...
View ArticleRAMPS for BeagleBone
I am working on a BeagleBone Cape version of the RAMPS design, called CRAMPS. I have a stub page created in the RepRap wiki, and KiCAD design files are on github. The design is based primarily on the...
View ArticleRe: RAMPS for Due!
I'm far enough along in my design I've started a thread for the CRAMPS board (BeagleBone Cape version of RAMPS). I would appreciate it if anyone here is willing to do a design review of the schematic,...
View ArticleRe: Newbie Help Needed - Change Stepper Driver
Why didn't you just move the extra stepper driver into the socket where the bad one is. It is not necessary to have all of the stepper drivers in place - only the ones you are using.
View ArticleNumber of steps
Hi! I have two Nema17 motors with this specs: Step angle: 3.75º Voltage: 5V Current: 0.5A And I want to know if I can used them in a Prusa i3. Thanks Alberto
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