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October 19, 2017 ...


  • Please note: is in no way affiliated with 101Hero. is an unofficial user forum.

Recent Posts

Using this to red-strap a decent printer. Why is it doing that? I am looking at getting parts printed on this to repstrap a decent 20-30cm cubed 3d Printer. Still have issues. Have a look and suggestions would be great. Still just starting out and learning
Trouble shooting / Re: Hero 101 Printing and then ... not printing
Last post by pcarew -
Try "Pronterface" on a Laptop, connected by USB. It is generally easier to setup and get going with.
Repetier host is also a good option, but a little more to it.
Trouble shooting / Re: Calibrating towers to the build plate
Last post by wuselfuzz -
The delta arm length might indeed be too long. I just spent the whole weekend calibrating my 101hero after a few upgrades (NEMA14 steppers, bowden extruder, frame stabilizations) and finally made it print pretty well.

I'm using Marlin 1.1.5 on the original 101hero controller board, the configuration is available on github:

I ended up setting DELTA_RADIUS to 78 and the print head was moving in a plane parallel to the print bed. However, printed parts came out a little too wide, so instead of incrementing the radius, the arm length has to be shortened. Setting the rod length to 142 will probably fix my issue. I'm not sure if that was supported in the Marlin build on the stock firmware, but you could try adding

M665 L142

to the gcode.start section of your slicer. The "delta radius" can also be configured using M665 Rxx. Also, the tower height can be set using M665 Hyy, so if you get a vertical offset to the plate by changing the rod length/delta radius, you can also move the whole setup up or down a little without having to screw with the end stop screws.

All parameters can also be set at once with one command, e.g.

M665 L142 H104.8 R78

As a side note, a good reference to measure distance between the nozzle and the print bed is a single row lego brick on the side. Lego bricks are produced very precisely, a single row brick is exactly 7.85mm wide. So if you do something like

G0 F800 X0 Y50 Z7.95

And make the brick fit exactly between pad and nozzle, you'd end up with a 0.1mm gap between nozzle and pad.
Mods and upgrades / My upgrade journey. 101hero
Last post by Jamespd -
 I recently received the 101 hero and have been tasked with upgrading it to get it into a working printer. I've had to do a lot of structural work just to get it to print. I started a video series on the process. I hope it helps.  Have a look if you can thanks.
101Hero / Re: Anyone got a spare 101Hero controller to sell?
Last post by Eddiie -
I found parts on
Ordered new controller.
General 3d printing / Re: Martian 3d printer
Last post by Alarcon -
I'm sure it would be easier to send a giant 3D printer up there to build stuff than actually build it here and send it.
Mods and upgrades / Re: Firmware
Last post by Eddiie -
I hacked together a RAMPS mount for the bottom.

It is intended to be used with the NEMA14 (or NEMA17?) stepper motor mods.  Once the ribbon cables are added to the LCD board on the RAMPS, it makes it too tall.  To fix this, I added rubber feet to the stepper motor mounts.

Another part I modified from Trebobert  that will allow one to use another (cool) RAMPS enclosure and LCD screen - +

I did the Marlin firmware config from scratch (1.1.4) and having issues with the carriage tracking straight so going to try the config from WST.
The config from WST does not compile with the current version of Marlin.   What version is it for?
i had exactly the same problem its a few things you can do, open in repetier, use makers muse video on youtube to see how check the temperature under the manual control settings and mess around with those but take note at what it was originally on, don't forget to set up the settings, there is a post on here with the gcode to calibrate the towers, a lot easier than manual and also check your temp, im running at 210 at the moment and i am on a different power supply, hope this help if you need anything don't worry on asking, ps im only 13 so im not exactly an expert just personal experience, but i know have amazing prints coming from my printer
Trouble shooting / Re: Calibrating towers to the build plate
Last post by controller -
What arms length needed for correct this problem?
Trouble shooting / Re: Calibrating towers to the build plate
Last post by BobC -
It seems there may be problems with some of the configuration constants set in the 101Hero's Marlin firmware.

They apparently entered the arm length from their CAD drawings, and didn't measure it on an actual printer, so the values entered aren't quite right.  If the arms are physically shorter than the firmware is configured for, you can have perfect height at the edges yet be too high in the middle.  Inverse of that when the nozzle has good clearance at the center, but not at the edges.

I believe the most likely cause is that the arms shrunk a bit after coming out of the mold.  It is very common for plastics to shrink by different amounts based not only on the kind of plastic used, but also on the batch of plastic, the mold release used, the mold temperature profile, and even the weather that day.

Arm length error may be visible by very closely watching the print carriage to see if it tilts when away from the center.  If so, the arm lengths likely are wrong.  (Or your pylons are really crooked...)  A good test would be to write some G-Code to move in a 75mm radius circle about 10mm above the build plate.

Arm length error is a common problem that is straightforward to fix on all other Delta printers.  Unfortunately, the 101Hero folks are in violation of the GPL by not releasing everything needed to rebuild the firmware, so we can't fix this error on our own.

One alternative is to replace the arms with ones that are adjustable, then set them to match whatever the firmware expects.

I'm told there are slicers that can account for Delta arm length errors, but I haven't found one yet.