In the case you heed to to upgrade the Woodpecker CNC control board, you will have to overcome some issues.
First one, the firmware upgrade via USB is almost(?) impossible, due to the CH340 chip between USB socket and Atmeg328.
Second one, the ISP header IS present on the PCB, but is has 1,27mm (0,05″ or 50 mils) pitch. Usual ISP connectors comes to 2,54 mm (0,1″ or 100 mils) pitch. Read the rest of this entry »
My settings for 3018 DIY CNC machine with Woodpecker’s control board and GRBL 0.9j.20150930. Note the feed rate and acceleration on axes.
Jul 23
Recently I was trying to move my sites to SSL – for various reasons.
The test site went fluently, while the work machine refused to serve SSL content. While testing with ‘wget’, the error I received was
GnuTLS: An unexpected TLS packet was received.Nov 6
What the heck is “fMRI Parrot”?
First of all, the heck is fMRI. fMRI stands for “Functional Magnetic Resonace Imaging”, as defined in Wikipedia. It involves tons of expensive hardware, like Magnetic Resonance machine, and software, used to reconstruct the scanned volumes. During fMRI scanning a series of stimulus are applied to the patient and the brain is scanned using fast scanning MRI techniques. The aim of fMRI is to record immediate changes happening in particular areas of the brain.
The single MRI scan is called “volume”. It is created from a series of slices of the predefined thickness. Having more slices creates more detailed volume and extends acquisition time. As the changes of the brain activity are momentary, a short volume acquisition interval, named TR or “Time Repetition” is needed. Usually it varies from 7 to 1.5 seconds, depending on the capabilities of the MR machine. Short TR time supposes lower quality scans, compared to the “traditional” MR scanning. So the level of detail of particular volume is a trade off between time and specific requirements.
The fMRI scans consists from a number of volumes, recorded at particular intervals. The key condition for a successful scan is the precise timing. In order to find a region with elevated activity, a stimulus must be started just when the volume acquisition begins. For this the MRI machine may expose a short pulse – start of a volume. The pulse may be brought to the MRI control room via the interface box and the required stimulus started automatically. Some stimulus require the patient to respond, eg. press the predefined button. The response from the patient is also brought to the MRI control room. As there are special requirements for any hardware at the MRI machine, only certified equipment is allowed to the MR room. The requirement at the MRI control room are more relaxed as well as the choice of the equipment There are different vendors of the interface boxes and response buttons, NordicNeuroLab (NNL) being one of them.
In order to create the simulation series, or paradigmas in fMRI terminology, a lot of time is needed. Each paradigma is to be verified before the clinical test, while some of them can not be tested without a signal form the MRI scanner or a response from the patient. There is no need to say the MRI equipment is expensive, so is the time spent in the MRI machine. Most of the MRI scanner interface boxed can be used in so called “simulation” mode, sending particular responses at the predefined moments, without actually running the scanner. For example the Sync Box from NordicNeuroLab will send “S” symbol at the start of the volume acquisition, while fORP from Cambridge Reserch Systems is to send “5”. So what is actually required to test a paradigma, is the response from the scan… WAIT!
It’s must not be the MRI scanner nor the interface box.
I was working on semi – automated solution to enter door handiness in Revit models. The existing solutions are either quite expensive (like Reforma Swing Direction) or has weird assumptions.
My intial setup is Dynamo and the Dynamo Door Set Handing module from http://archi-lab.net/. It has fine tutorials, so you only need to create your model in Dynamo.
The weird thing on door handines is it is different in some countries.
So, what’s to do?
ODS module does not work on IronPython, and i don’t know the way to add Revit modules to regular Python.Whatever …
''' cut-n-paste from the net
@author: ejs
'''
import clr
import sys
clr.AddReference('RevitAPI')
clr.AddReference('RevitAPIUI')
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.Architecture import *
from Autodesk.Revit.DB.Analysis import *
#sys.path.append(r'C:\Python\3.4\Lib\site-packages')
#from odslib import ODS
#ods = ODS()
uidoc = __revit__.ActiveUIDocument
doc = __revit__.ActiveUIDocument.Document
cView = uidoc.ActiveView
collector = FilteredElementCollector(doc)
collector = FilteredElementCollector(doc).OfClass(ViewSchedule);
elems=collector.ToElements()
n_elems=len(elems)
for elem in elems:
if cView.Id == elem.Id: Read the rest of this entry »
I’m lazy person.
Here are search engine providers for Firefox and MS IE web browsers.
I’ve added keywords for these search engines, like evt for Evita.lt, lmn for lemona.lt. Now, searching in particular site is as easy as Lotus 1-2-3: type in keyword and the term you need to search in the address bar. So, typing lmn ds180 will search for ds180 in Lemona.lt site.
| Firefox | Lemona.lt | Evita.lt | Datasheetcatalog.com |
| MS IE | Lemona.lt | Evita.lt | Datasheetcatalog.com |
Cheers.
Nov 18
It’s a summarising memo from the last Saturday.
What supposed to be slowish disk, actually was dead drive on array.
Thanks for the supplier, the entire collection of SAS drives was just waiting to be installed.
It’s possible to configure RAID adapter from the BIOS stage, but it’s more interesting to configure it on the live system. What you need is configuration tools for the adapter card. And they are called “hpacucli”. Ok, ‘CLI” stands for “Command Line Interface”, “hp” is too obvious. “A” could be for “array”. What “cu” stands for?
Debian repository is at http://downloads.linux.hp.com/SDR/downloads/ManagementComponentPack/pool/non-free/.
Get it, install and read on.
Run “hpacucli”, it should be located in /usr/sbin.
To get information on installed RAID cards, use
ctrl all show
The utility can warn you on the recommended firmware upgrade and will print the controller(s) information:
Read the rest of this entry »
Here is the other issue: due to the fast install of Revit Server 2012, the location of model was not important. After the server’s role was changed to “Central” instead of ‘Caching”, i wanted model be stored in more predictable location.
Again, I had no wish to reinstall the whole server, including w2008r2 server.
Read the rest of this entry »
Our company was running a caching Revit Server 2012 instance, to be able to work on a project. The central server was set in the kingdom of far away and was serving three architectural offices.
Recently we had to take care of the model created and the Revit Server 2012 instance itself. I hate to touch working system, but i had to.
Read the rest of this entry »