Posts by Hilbert

3d printer unified bed leveling

This is a copy of the last part of`G29 - Bed Leveling (Unified) <>`_. I am googleing this page so for furture reference I place my most used part here.


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3d printer calibration

When using diffent materials, the hotend behaves diffent.

For 275, 250 and 200 ° C the calibration command is:

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3d printer calibration

When doing something on a 3d printer, most of the times you don’t need to do anything, but sometimes it is neccesary to calibrate some stuff. Changing the hotend, heatbed will force you into doing that.

If you have a bowden setup, decouple the bowdeb tube from the extruder

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SELinux did it again

Finally found out why the automatic update did not work, SELinux. The first thing I say to my colleges when on linux and the rights are ok, check for SElinux, and what am I doing…

I found this link: Unable to Update WordPress

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Firefly 8s remote control cable

Before the information gets lost on those Chinese sites ;-). I copied it for myself and the rest of the world:

white and black: trigger cable, gnd

connections firefly 8s

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Some tools to help speed things up

I found that the blog loaded slow, yeah right, slow server, slow internet connection. Nope… well could but not likely.

Adding cache expire tags to files was quite a simple thing, just add the following to your .htacces file

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Wide range discrete led driver (4V-21V)

I wanted to have LED’s in my Spyker KAT, but I want them directly to the battery and nospecial 5 V connections. The battery can be a 2S or a 3S (8.4 or 12.6 volts).

How to do that, in fact it is quite simple, make a constant current source. Looking in my college books I found the basic idea again. Two transisors and a few resitors should do the trick.Looking through my component bins I found a BC547 and 2N7000, two transitors sorted!

Schema led drivers

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Update wordpress on the command line

Just for my backup, login to the wordpress server, and change to the root of where you have wordpress living, I was lazy and chose the default CENTOS apache directory. .. code-block:

Get the latest and greatest. .. code-block:

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Samba server not showing in the “Networks” folder

I finally solved my problem of not seeing my linux samba server in the windows “Networks” folder. I could access it by its hostname and/or ip-address, but I could not browse to it. So keeping all windows and linux settings the same (apart from its workgroup name) is default it still did not work. Hacking arround with windows settings, no change. Changing linux samba setting, no change. But net view did show both the windows and linux machines. Then I read some article about having short workgroup names, I thought: “Nah, that can’t be it.” But I gave it a go and just added “GRP” to it, making it more than 6 characters and guess what, that was it all along.

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From FLAC to m4a for free using linux

When searching online to import FLAC into iTunes, the computer says NO. Way to go Apple, NOT!!! Searching further I google came with all sorts of non free programs to convert the files, I said NO!!! Doing some more searches by ading Linux I came to the following result:

I opened a terminal (putty) and converted the files for her and added them to iTunes and now they are on her iPhone, for FREE!!!

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