Re: Servos to Rambo 1.2 d
In my case I haven't jitter problem. But since I use a bigger servo and need a direct alimentation from my power supply. The jitter can come from bad china servo ... Davew_tx has post a solution on...
View ArticleRe: All Metal Hot End Fan
Ideally you'd leave D9 for cooling the workpiece and get a 2nd MOSFET fan driver (example circuit). You can use an unused servo connection or pin 45 which is a PWM output pin. Either can be controlled...
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MakerCoast SR2 3D Printer Board Announcement
Hello all, We would like to officially announce a new board we are bringing to market, the MakerCoast SR2. The SR2 (Sanguino REV 2.0) is a derivative of the original Sanguinololu. We updated the old...
View ArticleRe: Servos to Rambo 1.2 d
I connected the servor just like you did, and I also have Rambo V.1.1b. However, when I powered it up it kept "moving". For Instance, when the printer powered up it would move by 10 degrees or so,...
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Re: Firmware to drive X-Y galvanometer
wao, so amazing Viktor. what kind of laser source you use ? 80w @_@ are you use co2 tube? now i'm used galvometer too, it not straight when two axis run together...
View ArticleRe: Firmware to drive X-Y galvanometer
... I'm using fiber-lasers with 1070nm wavelength and much better beam-quality (smaller possible spot diameter) than a CO2-laser. This cheapish chinese galvo-scanners and drivers aren't really meant...
View ArticleRe: Stepper motors not moving
The soldering on the pins of your pololu is the worst I have ever seen!!! I would bet one or more of those is bad. Also hot glue and electronics is not a good idea...
View ArticleRe: Servos to Rambo 1.2 d
In my case the servo move a little bit the machine connect to the pc after no. I use this servo : Turnigy 620DMGplusHS High Torque Digital Servo I have forgot but I have change the logic fuse of 5A...
View ArticleRe: My little ARM board
After some crazy weeks at work and home I finally managed to put a couple of boards together: [attachment 34252 pop_board.jpg] I have only verified that it shows up in BOSSA and I have written dummy...
View Article2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Dear Rep Rappers, I have ran into a weird issue. Recently Completed : Ramps 1.4 Hardron Ord Bot. Fully functioning and steep learning curve. Thinking that I have this in the bag, I went ahead and...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
PS: the motors vibrate as if they were preforming a function but do not move. :(
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Try slowing down the max acceleration and max speeds of the motors in Marlin (or whatever firmware you're using). The defaults in Marlin (and other firmware) are NOT necessarily suitable for all...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Also before you do that: Have you confirmed the jumpers are installed under all the stepper drivers? If the drivers are doing full-steps, you will definitely be going too fast.
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
QuoteCefiar Also before you do that: Have you confirmed the jumpers are installed under all the stepper drivers? If the drivers are doing full-steps, you will definitely be going too fast. How do i...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Thats great info. I was not aware of this. Does this mean that one needs to tune the motors for every 3d printer in marlin based on the stepper motors being used? Can you share some info on this...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Ok. Sorry about the question before. I see what you mean by jumpers and installation. Yes installed and jumpers . I will use your advice and play with the acceleration rate as you mentioned above. I...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
It's not just based on the stepper motors, but the mechanical properties of the machine, and the operating voltage and current you're driving the motors with. There is no hard and fast way to work...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
My motors are Nema 17 /1.8 deg/ 2.5 belts How about default set steps per unit in marlin? Mine is set for 78.7402 for x and y axes. On the first build the units worked but on this particular one when...
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
Ps: the pulley has 20 teeth, does that play any part ?
View ArticleRe: 2nd Build Ord Bot: Help ! Stepper Motor Problem :(
What stepper drivers are you using? A498x or DRV882x drivers? The specific driver chips require different jumper settings for each specific microstepping mode, which are specific to the actual stepper...
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