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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: The J-Head Lite will blow your face out - 8 years ago
Finally got my repstrap running and printing. I just printed the 20mm box with the J-Head lite MK-II using PLA. No jams so far. The heater does seem a bit anemic though, with the PLA cooling fan blowing on the bed at 25% power the hot end drops in temperature from 190C to 170-175C (still ok for PLA). Maybe I need to re-calibrate the PID with the fan blowing? With the fan off, no problems (Iby kscharf - For Sale
Z probe configuration for auto level - 8 years ago
Has anybody here implemented the bed auto level (z probe) feature on Repetier firmware for a cartesian printer? I'm not sure how to set up the configuration.h file for this, even after reading the instructions (which I think were for a delta printer anyway). I have a z-probe switch mounted on a movable servo activated arm, wired to my X-MIN endstop, and I have set the Z_PROBE_PIN as ORIG_Z_MIN_by kscharf - Repetier
Re: Did Repetier-Host went closed source? - 8 years ago
For the time being I am still working on my printer using Repetier host and Repetier FW. I'm very happy with the support I've been getting on this forum with the firmware, and I will probably have a few more questions before everything is configured correctly. I'm more interested in seeing the source for the printer firmware side of things than in the host (so long as the communication protocolby kscharf - Repetier
HomeDepotStrap Cobalt - 8 years ago
Here is my attempt at building a RepStrap. I've called this one the "HomeDepotStrap" because it is mostly made of hardware and parts purchased from the home improvement store. The linear movements are heavy duty ball bearing drawer slides similar to the what's been used in the WolfStrap and the Eiffel. In my case, I used steel and Aluminum angle and bar stock for the supports, the base is a piby kscharf - General New Machines Topics
Re: thermistor table for honeywell (budaschnozzle) in firmware? - 8 years ago
Well not yet having a chance to look deep enough into the code I don't know how much would have to be changed to do anything in this area. At the very least it would have been nice to have the errors reported for the hot end thermistor and the heated bed one be separate. Marking both as failed when only one was bad made finding the real problem a bit of a issue for someone who didn't know whatby kscharf - Repetier
Re: thermistor table for honeywell (budaschnozzle) in firmware? - 8 years ago
OK I've analyzed the problem. I DID have a heated bed defined in my config. IF no thermistor is attached to the bed BOTH the hot end AND the BED show in error. IMHO this is a BUG. I tried both deleting the heated bed from the config, and attaching a thermistor to the heated bed T1 pins. BOTH fixed the problem. What I would suggest (and I might try hacking the code to do) is to have the firmwby kscharf - Repetier
Re: thermistor table for honeywell (budaschnozzle) in firmware? - 8 years ago
I'll have to try the M105 X0 later when I'm home. I wish there was a way to reset the error without rebooting the firmware. Or even better, just correct the problem and go. Marlin will dismiss the same error once I hook up the thermistor, repetier seems to need to have everything perfect when it is powered up, even if no print is being started. BTW another issue I have is that even though myby kscharf - Repetier
Re: thermistor table for honeywell (budaschnozzle) in firmware? - 8 years ago
I used your advice to setup Repetier FW for the Honeywell 135-104LAG-J01 but I keep getting DEF showing for the hot end temperature on the RepRap-Disccount LCD control panel. If I load Marlin on the same HW, it works and heats up the extruder. Strangely the Host IS reading the temperature reported by the hot end (room temp) in any case. I DON'T have a bed heater hooked up, could Repetier FWby kscharf - Repetier
Re: Repetier f/w will not turn on extruder heater - 8 years ago
I only made the changes shown in the configuration.h file that I included with my first post. I also tried building the firmware with the hot end sensor type set to 1 (default thermistor). Even with that the temp shows as DEF, yet the same wiring works on Marlin. Maybe my MIN temp is set wrong (is that in configuration.h?) Does Repetier use a different sensor pin for extruder 0 than Marlin? Oby kscharf - Repetier
Re: Repetier f/w will not turn on extruder heater - 8 years ago
Actually that's the weird part. The front panel shows the extruder off, and you can't seem to turn it on from the front panel. The temperature for the hot end displays as DEF / 0C. On the other hand, when the printer is connected to repetier host, under manual control a temperature IS displayed for the hot end (was between 24C and 28C depending on room temperature). I can click on extruder onby kscharf - Repetier
Repetier f/w will not turn on extruder heater - 8 years ago
I used the Repetier website wizard to develop my configuration.h. I'm using an Arduino Mega2560/RAMPS-1.4 hardware. Compiled with Arduino 1.05. I can't turn on the heater either from the LCD (reprap discount LCD panel with encoder), or from Repetier host. Just for grins, I also tried Marlin. Marlin DOES turn on the heater using the LCD panel or commanded by G-code from Repetier host. So tby kscharf - Repetier
Re: Switching D8 and D9 in Repetier firmware - 8 years ago
The D8 port on the RAMPS board is powered through the 11A fuse. The other two heater ports are powered by the 5A fuse. Since your bed heater probably requires at least 10A you can't use any other port besides D8 without re-wiring the RAMPS board to power the other mosfets from the 11A fuse. Now having said that, the schematic shows that the MOSfets actually switch the COLD end of the power. Wby kscharf - Firmware - mainstream and related support
Re: Slowing Marlin rotary encoder - 8 years ago
I'm using a Chinese clone of the rep-rap-discount 20x4 line LCD panel. I think the knob is turning in the wrong direction (ie: counter clockwise to increase or scroll down). The first click of the encoder is lost going though a menu. I think my encoder generates 4 transitions per detent. Each click does move the menu cursor only one step, however on the prepare->move axis-> command eacby kscharf - Firmware - mainstream and related support
Re: Did Repetier-Host went closed source? - 9 years ago
@repetier Out of curiosity, can you mention which printer makers have included Repetier-Host with their products? The free-download I have been experiementing with (I don't yet have a working printer hooked up so I am just exploring the settings and slicing stl files) seems much more responsive and friendly than pronterrface. BTW, just a hint, your installer for Linux should install the Mono paby kscharf - Repetier
Re: Did Repetier-Host went closed source? - 9 years ago
Will Matter-control compile for Linux with Mono? Any Ubuntu packages planned?by kscharf - Repetier
Re: Did Repetier-Host went closed source? - 9 years ago
You're correct, I got the firmware confused with the (PC) software. I see on your download page you are not "selling" the host software, it seems to still be free to download the executables. What exactly is your policy here? Are individuals legally able to download and use the host software? Do we have to buy a license? What is the cost (or are you only selling to OEM's)?by kscharf - Repetier
Re: Did Repetier-Host went closed source? - 9 years ago
It appears from the EULA and what I've read on their site that the host software remains free (as in beer) though closed source. I thought that the software was derived from Teacup or Marlin, if either of those are GPL then Repetier-Host must have had ALL of the GPL'ed code removed to go closed source. As long as it is LEGAL to freely download Repetier-Host, I might still use it. I will certaby kscharf - Repetier
Re: Xmega based design? - 9 years ago
I know that the xmega is 3V, but all of the logic on the RAMPS can be made to run at 3V with no problem (simple re-design). Makes supporting an SD card easier in fact since no level converter is needed. And you CAN drive most 5V lcd's with 3V logic since they are write only. The step sticks are all 3-5 volt logic compatible. I wasn't thinking of using an existing RAMPS, but rather designingby kscharf - Controllers
Ramps bring up procedure? - 9 years ago
I now have my RAMPS 1.4 board, 4 pieces of DRV8825 drivers, 4 NEMA-23 motors (2.7v @ 1.5 ohm rated at 1.8A). I will use a NEMA-17 0.9 degree motor for the direct drive extruder (1.75mm filament), and will wire the two Z-AXIS motors in series due to the high current requirement. I need to know how to start wiring and testing the RAMPS and motors before I actually assemble the motors into the priby kscharf - Reprappers
Re: Ramps 1.4 vs Sanguinololu - 9 years ago
1: twice as much flash memory (atmega2560 vs atmega1284) but HALF as much ram and eeprom. 2: More available I/O pins if you want to add LCD, SD card etc .... 3: Can add additional shield boards UNDER the RAMPS to support other ideas such as WIFI, etc BUT Sanguinololu maybe be cheaper, smaller solution. BOTH are well supported by all firmware. I guess the RAMPS is a better solution for the hackby kscharf - General
Re: Lost DIR control on X axis - 9 years ago
Cold solder joint on the ramps board to the connectors for the X-Axis stepper stick socket?by kscharf - General
Re: Specing motor - 9 years ago
I've noticed that you can get surplus NEMA-23's cheaper than the NEMA-17's sometimes. Probably because the surplus dealers KNOW that the 17's are wanted by the reprap builders. If you can modifiy your design to work with the 23's you could save money. The 'short 23's might not weigh much more than the 'extended 17's. (I just bought 5 surplus NEMA-23 motors rated at 2.7v 1.8A 1.5ohm for $5 eachby kscharf - Stepper Motors, Servo Motors, DC Motors
Re: Trying to find a stepper motor under 1A but with enough torque - 9 years ago
Great. PS they are Nema-23's. No problem, I have the room for them. These are similar to the ones I got:by kscharf - Stepper Motors, Servo Motors, DC Motors
Re: 24V with Ramps 1.4 questions - 9 years ago
If you need more power on the heat bed only why not run it on AC off of a suitable stepdown transformer and use the 12v output of the RAMPS to power a SS Relay to switch the primary of the transformer?by kscharf - RAMPS Electronics
Re: Heatbed Problem - 9 years ago
I take it that the heater control is ON/OFF and NOT PWM. I guess I can run my heater on AC off of a suitable stepdown transformer and switch the primary with a solid state optically issolated relay?by kscharf - RAMPS Electronics
Re: Trying to find a stepper motor under 1A but with enough torque - 9 years ago
So the 2.7volt, 1.8A, 1.5 ohm motors I found might work OK?by kscharf - Stepper Motors, Servo Motors, DC Motors
Xmega based design? - 9 years ago
I'm just starting out building my first printer. I plan on using a RAMPS board as I put together my own Arduio 2560 mega board using a bare board off ebay and some samples from Atmel. Now I'm wondering about porting the firmware to the xmega processors which can be run at twice the speed (or a bit more overclocked). The atxmega128A1U has built in USB (but since the LUFA library may not be fullby kscharf - Controllers
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
That's a good idea. I can run the heater on AC off of a high power filiament transformer left over from a HAM linear amp (10V @10A) and switch the primary with an AC solid state relay I also have in the junk box.by kscharf - General
Re: Looking for input as I learn about and design my first 3D printer - 9 years ago
MPJA didn't have too much data on them. 1.8 degree, 2.7 volts 1.8A 1.5 ohm coil 4 wire bipolar. shaft is 1/4" 3/8" long knurled. Will take a pulley or a compression clamp type coupler.by kscharf - General
Re: Extruder rated for 24V - 9 years ago
I would also remove the power fets and mount them externally with heat sinks. They might get hot at the higher voltage (are they rated for it?) You also might consider using the DRV8825 based stepper boards, they can handle more voltage as well,by kscharf - General