Hello, I have been modifying a RC toy tank with an SKR 1.4 in order to control it with g-code prints. I defined both chains, left and right, as extruders, since I needed an infinite surface to move, and I determine how they move together by defining mixed movements. However, I haven't' managed to make one of them retract while the other extrudes, is there a way to do this? Thank you for your replby acastles91 - Developers
Hello forum, I put a SKR 1.4 board on a remote controlled tank to be able to control it with g-code files, and I defined both chains (what moves it forward and backward and also left and right) as extruders, since they don't have a bed size and I need unlimited movement. That seems to work fine, but I need the ability to chage direction, and when I move the tank by defining the movement as a toolby acastles91 - Robots!
Quotedc42 Nema 23 steppers are not that big, and properly designed , mounted and heatsinked TMC5160 drivers with their external mosfets can easily handle more than 3A. But not stepstick-format drivers. Get yourself a better controller that is designed for high current motors. Duet 3 will drive Nema 34 motors at up to 4.5A RMS, 6.3A peak. Thanks a lot for the recommendation! Do you know of any drby acastles91 - General
I double checked my datasheet and it turns out that I was convinced that my motors could handle way more current, I don't know why. So I've been feeding them way more power than I should. I will swap them for bigger motors!by acastles91 - General
I'm using klipper with an SKR 1.4 board to control a pen plotter with an airbursh mounted to a wall. The thing is big and uses 3A nema 23 steppers. The drivers I'm using are TMC5160 delivering 3 amps both as run and hold current. The motors run really really hot and the machine misses steps, normally after a while of being operational. My guess is that there might be some thermal throttling. Alsoby acastles91 - General
Thank you all for your answers. Here is a fragment of the g-code that I'm trying to print, which runs very slow: M107 1 S0 G90 G21 G1 X1273.0515 Y1665.2401 G4 P0 M106 1 S1 G4 P200 G1 F10000.000000 G3 X1272.0575 Y1657.0319 I159.3581 J-23.462 G3 X1271.5225 Y1648.6104 I133.8019 J-12.7281 G3 X1271.3691 Y1632.7133 I358.035 J-11.405 G2 X1271.4675 Y1617.014 I-1251.8396 J-15.6993 G1 X1271.4675 Y160by acastles91 - CoreXY Machines
Good to know that it's modal and it works like that, thanks! The controller is a SKR1.4 with Marlin 2.0, which works with a 32 bit chip, so I don't think the problem is there. Something strage about the g-code, is that every coordinate has 4 decimals. I don't really need that precision, is it maybe part of the problem?by acastles91 - CoreXY Machines
Thank you for replying. I have tried the F parameter and it does work as it should, it moves quickly. But when it reads a g-code file and not a command that I input directly, it moves very slow when it comes to executing G3 and G2 commands as far as I can tell. The g-code generator that I'm using casts a G1 F10000 (which is the limit I found for the feedrate) right before the G2s and G3s, and thiby acastles91 - CoreXY Machines
Hello, I am developing a pen plotter and using inkscape's photonics extension for laser cutters to make gcode files. The machine is moving very slow and I don't know where to check, I have found my ideal feedrates and the machine moves fine when I send it G0 or G1 commands, but the gcode of a random sketch that I do in inkscape, which is mostly G2 with four decimals (no idea if that makes a diffeby acastles91 - CoreXY Machines
Thank you. I'm using inkscape with an extension to generate the g-code, and it throws G2 and G3 as default. Could you suggest a way of generating g-code using mostly G1?by acastles91 - CoreXY Machines
This is a very newbie question so thank you for your patience. I am building with a friend a big pen plotter with an Skr 1.4 and Marlin. The mechanics seem to work and I am now finding all the proper values to move this thing. It was going good until I tried G2 and G3 movements, which I assumed were going to be similar in speed as G0 and G1, but that ended up not being the case. Since my machineby acastles91 - CoreXY Machines
Thank you for answering. Sorry for the late reply, I ran into some mechanical problems that I had to solve first. The machine is around 2.30m x 2.30m. I am using DM542T Drivers that I connect directly to the enable, step and direction pins of the board. It is not belt driven, is a pinion and rack mechanism. I set the drivers as A4988 in the configuration file. I also have some TMC5160 lying arounby acastles91 - CoreXY Machines
Hello. I am developing a pen plotter with the use of a SKR 1.4 and marlin 2.0. I was being able to move both x and y axis, but now I don't know what changed but the Y axis moves only when I home it, and afterwards it doesn't, although an M114 tells me it has advanced. Any ideas on what could be the cause? I am lost. Thank you.by acastles91 - CoreXY Machines