You treat any driver that comes without SPI, like a standard Pololu driver: You set the Vref via potmeter and calculate steps/mm according to the jumper settings inside the driver socket. Then change this line in Marlins configuration.h: // X Y Z E steps/mm #define DEFAULT_AXIS_STEPS_PER_UNIT {200, 200, 200, 140.6} // steps per mm for Kossel (GT2, 16 tooth @1/32 and e-steps @1/16)by o_lampe - Stepper Motors, Servo Motors, DC Motors
I've no experience with MKS Gen L, but when I had to revers ribbon cable orientation for Smart LCDs, I always had to revers both. Calling any MKS board 'genuine' is a punch in anyones face, they stole from.by o_lampe - RAMPS Electronics
You'd need a toolholder on the shaft to clamp your tools ( ER11 or ER16 are popular sizes ) With a thrust bearing between that and motorhousing the shaft wouldn't move axially.by o_lampe - CNC Routers, Mills, and Hybrid RepRapping
A force sensitive resitor would be triggered by a plastic blob on the nozzle, too. But the trigger-height would be wrong.by o_lampe - General
The DRV8825 uses a different formula to calculate Vref I_TripMax = Vref × 2 or Vref = I_TripMax / 2by o_lampe - Reprappers
Integer math is funny, isn't it? Don't know, if I can explain... Usually you multiply the floating value by right shifting ( eg. >>8 ), then forget about the fractions and do the operation in integer. Later you left shift (<<8 ) the result to get your final value. Maybe you can read more qualified explanation about Integer math in the net.by o_lampe - Developers
As I said: I don't want to blame anyone. The RAMPS adapter theory is perfectly plausible.by o_lampe - Duet
Would it be OK to use normal UV-LEDs instead of Laser-diodes?by o_lampe - Developers
Call me a smarta$$, but I found a few typos on your github page. I also noticed this link doesn't lead to the wiki anymore. Instead it's here HTH Olaf QuoteGithub Supported hardware Version 2 of this fork of RepRapFirmware supports electronics based on SAM4E, SAM4S and SAME70 processors; in particular the Duet WiFi, Duet Ethernet, Duet Maestro, the forthcoming Duet 3 range, and some specialsby o_lampe - Duet
FYI: You have to remove the housings of the ribbon cable connectors on the LCD and connect them both in revers in order to make it work. ( revers doesn't mean switch EXP1 with EXP2 ) Alternatively you can cut a notch in the housing. BTW: it works as it should on a RAMPS board but the pinning is the other way round on the Maestro ( eg. EXP1 pin 1 should be 5V, not pin 10 ) Don't want to blame anby o_lampe - Duet
I'd go for 'wipe while retracting', because your retraction is pretty long/slow. Or find out, why it retracts there anyway? (minimum length between retractions)by o_lampe - Slic3r
22 pulses difference doesn't sound like a binary error ( 8-16-32 pulses would be a hint ), but nevertheless did you try to store the stepcounts in an array instead of using the same register back and forth? BTW: Is the microswitch debounced in hardware or software manners?by o_lampe - Stepper Motors, Servo Motors, DC Motors
re: GPL Do you have to share design files, while it's in draft stage or when it's finished?by o_lampe - RAMPS Electronics
Is it the bed you're showing or just the 'frog' below? Do you plan to use three carriers and how do you adjust bed-level? Instead of the C-beam, I'd go for two individual 2020 beams mounted on a solid bottom plate ( eg. 12-19mm MDF ). That way you can mount the other stuff on the same base plate. Of course you can mount the C-beam on a solid base, too.by o_lampe - Extruded Aluminum Frames
I made some experiments with the 'parallel bar' cantilevered bed this summer, but focussed more on the cloverleaf-cable drive portion of the setup. One obvious lesson is, that the frame has to be sturdy, otherwise you can't tighten the cable enough. I have plans to rebuild my CoreXY with the parallel bar at least, but 12 working-hours a day don't leave much room for tinkering...by o_lampe - CoreXY Machines
I like the idea of the floating pin! But when it is able to spin, it only transfers the pulling force to the teeth_in_teeth section. Then it's possible again to rip the rubber and steelcore apart. I assume there is not much clamping force in that section? Seems, the fibre core belts score again. Just thought, maybe a small wooden dowel pin would match the 2mm toothpattern? Or a square pin whichby o_lampe - General
Just a wild thought: One of these on each side: More bite/less pinch and better guidance...by o_lampe - General
QuoteDeckingman On my machine, I needed 5mm of retraction on the Titans but only need 3.5mm on the BMGs. I suspect this is due to the spring tensioner causing some wear of the filament during the retract so it needs higher un-retract due to the reduced filament diameter. I didn't get around to playing with different retract / un-retract distances but that may have been a cure. I believe the Titaby o_lampe - General
Quotedeckingman Someone I know suggested maybe putting casters on the printer, then designing a part to print that would make the printer do a little dance. That'd make a good YouTube video - "The worlds first dancing 3D printer". Sorry to say that, but I've beaten you regarding the dancing printer, because I tried caster wheels under my Prusa i3 a few years back. They wouldn't exactly make itby o_lampe - Developers
Is it possible to feed the Maestro ( or Duet eth ) over LAN port or to wake it up using a SSR like it's done with the PS_on pin?by o_lampe - Duet
Wondering, if it's related to microstepping. Like the drivers suddenly run on halfsteps instead of 16x? Can only be an SPI-hiccup: changing all the drivers config at once Q: Is the extruder running in scale_down mode, too?by o_lampe - Duet
Common sense is: an e-machine has full torque from 0RPM on. I once found a torque curve of a pancake-stepper that surprised me. It looks, like it needs a gear reduction and run above 75RPM. Maybe it was only their test-setup or the driver, but it's worth keeping in mind.by o_lampe - General
@Diggrr Very interesting. Very easy to try out. I'm sure you can reduce the pinch wheel pressure on each extruder, which keeps the filament in round shape. I'll try it on my Duet Maestro, just in case a single TMC2224 isn't upto it. Just one question: Does the heatsink on the side of the stepper create more Eddy currents?by o_lampe - General
Those yellow wheels must be backlash free. Otherwise a retract/unretract would stress the filament. Or do you want to drive it by two motors with a Bowden setup?by o_lampe - General
Quotedc42 I've had good experience with the Robotdigg rails. Me too. I've upgraded their bearings with "German quality" balls and they run supersmooth now in my Kossel XL. But in several other cases I use them 'as_is' and was never dissapointed.by o_lampe - Delta Machines
Quotedc42 Quoteo_lampe I played around with a tiny Delta to stirr my coffee, but it failed. Why did it fail? I wanted to use these tiny DVD-rom motors, I had laying around. But they were just strong enough to move the gantry without load. They also melted their way through the frame. It's now a nice eyecatcher on my desk...by o_lampe - Reprappers
Good news Viktor! I have ordered a Duet Maestro to replace the RADDS on my CoreXY, so it waits for new challenges. Do you use encoders with scalable resolution? I thought of using coarse moves when no mousebutton is pressed, finer resolution with left mousebutton and decoupled when right mousebutton is pressed. Finally found the thread with the above mentioned frame design. In my case, I don'tby o_lampe - Reprappers
I played around with a tiny Delta to stirr my coffee, but it failed. But a Delta has the smallest footprint of all, just sayingby o_lampe - Reprappers
We've discussed a (CoreXY?) frame with extended Y-axis lately. But I can't find it. My design is based on one of the drawings I've seen there: two linear rails; the carriers connected in 90° and the belts were parallel to the rails.by o_lampe - Reprappers
We are using this manual p&p machine at work, which i want to upgrade to be mouse controlled. The motion kinematic will be CoreXY with steppers. The toolhead also needs a small motor to align the SMT-part with the solderpads ( mousewheel ). The suction-part is automated already, I only have to replace the spring with a motor to move the toolhead up/down ( footpedal or mousebutton ) Arduinoby o_lampe - Reprappers