Wiring up the sherline cnc mill to the controller board

After sitting in various garages around town for the last two years it's finally moving forwards... many thanks to the emc IRC chanel on freenode.

A breakthrough in my understanding and general confidence came at the hands of Andy Pugh who walked me through the laypersons continuity test

Here is the documentation such as it is for the controller card http://greenstonepatent.com/4Axis.pdf
the motors are rated 3.0V, 2A, 1.8 degrees step on the xy axis and 4.5V, 1.4A, and 2 degrees step on the z axis.

I've got a 24V 1A DC power supply handy, as well as a 12V 1A that perhaps I may wire together to get a bit more juice.... still gotta figure that stuff up :)


OK, this will also work: touch motor wires together in pairs and find which pairs make the motor harder to turn.
       andypugh:OK, this will also work: touch motor wires together in pairs and find which pairs make the motor harder to turn.
    andypugh:    You should end up with two sets of three wires
    alidigitalis:    and now we have a red, yellow, and black wire group, and a blue, green, and white group
    alidigitalis:    it should read http://greenstonepatent.com/4Axis.pdf
    andypugh:    Hmm, I am not sure how to tell which is the centre tap. But I would hazard a guess that the white and black wires are the ones.
    alidigitalis:    are those the ones that need to go to the power and ground?
    andypugh:    I think you need a multimeter to tell.
    andypugh:    No, ignore the black and white wires.
    andypugh:    Connect red to A+, Yellow to A-, Blue to B+ and Green to B-
    andypugh:    If you look at the diagram on that link
    andypugh:    It shows that you can use all or half of the coils, by connecting to each end, or to one end and the middle.
    andypugh:    There is another sort of stepper driver where you connect the centre of each coil to earth/ground and then apply the power to one end or the other.
    andypugh:    That is called "Unipolar"
    andypugh:    But you have a bipolar driver, which effectively swaps power and earth as required.
    andypugh:    It doesn't really matter which end of which phase (A or B) you connect to the driver, as long as you make totally sure that you don't connect one phase to another. (I did that, blew my driver).
    andypugh:    ie, make sure that of the two wire families you have seperated, that one set goes to the "A" terminals, and one to "B"
    andypugh:    It is probably worth taking the time to read: http://en.wikipedia.org/wiki/Stepper_motor

anyhow, with thtat cleared up the three axis are now wired... it's time to link up the power cords :)

blender fluid text in 2.49 plus some cool inspeck stuff

I'll lay off the blender tutorials after they seem better answererd on the net.... until then... blender fluid text is really fun and cool, however getting it to work correctly is a task that's been nagging me and my student at http://computers4kids.net for the last two weeks.... well the first real decent news is that in response to several threads out there you don't need to up the bake resolution to 300 (requiring several gigs of ram) you MAY however need to enter every letter as an individual mesh.... it's a chore, however the results are great...

The leaf in the picture is actually an inspeck 3d pic of a piece of lost styrofoam sculpture made a few weeks ago... am very pleased with the outcome, however there seems to be some artifact in there somewhere....

hope to update this video once the artifacts are gone (and once I figure out how to get the alpha chanel ipo's a little nicer....

slingin green bling

More bling...
It all started one nice sunny day.... walkin down the tracks catchin some graffiti goin up



kept walkin down the tracks and stumbled upon some excellent green foam and very fine sand - knew it was gonna be a blingin day.



paid a visit to the job site to process some blingless rims that have some bangin aluminum...

if the small track hoe doesn't work...


Then use a bigger one.


Carve a few designs up


and crank out some bling

Inspeck 3d camera, Gaston & Wyatt CNC, and Monticello's doors....

The image straight from the camera with the bitmap overlay in place. Notice the beading visible around the horns....

The model as sent to the CNC machine - the beading is there, however some of the detail is missing... at 1/4 scale this translates in to less than a 64th of an inch... it should be ok



The doorway in miniature waiting for the freeze and doors to be mounted. The miniature hinges designed to open both doors simultaneously were created by hand here in the valley. These doors were designed by Thomas Jefferson and are in use presently at Monticello


The painted 1/4 scale model - notice the hand carved beading on the angle - another local artisan recreated this. Great attention to detail - it matches the horizontal beading, however includes the ~33 degree angle.

The unpainted detail


In perhaps a giant effort to get a great pic of Trevor - one of Gaston & Wyatt's de facto mascots - the Inspeck 3D digitization scannerfinally got cleaned up and put to work... The first pic shows the original image, the second shows the detail in 3d... probably need to put some polish on this, it's a start though... In the first picture (taken from a 3/4 scale model made by a local artist...) the beading around the bison's horns can be seen in clear detail - there's definitely some work to be done in the conversion if a full scale model is going to be usable, however for reducing to 1/4 scale (ie the final model is about 1" in diameter... ) and further having a layer of paint applied.... these models are quite sufficient. As they are carved in wood and MDF board the finest expected resolution should be in the order of 1/16 - 1/32 of an inch. In aluminum the results may be superior...


All told almost a dozen people came together to make this project a reality - here in no particular order is credit where due

Fred Wilbur - Carver of the angled Egg and Dart
RWA - Machine Shop who delivered the miniature door openers
Decorator's Supply - Supplied the Moulded Egg & Dart
Wes Leach - CNC CAD/CAM work
Mike Horan - Craftsman
Mike Saunners - Finisher

R&R = Rest & Relaxation = Rock & Roll = Retail Relay

There's not much more to say - it is the best business to burgeon in C-ville in many moons - Retail Relay. Like ordering a pizza with everything on it - 'cept instead of ancient canned anchovies it's fresh catfish. Instead of plain pepperoni it's stuffed sausage. Instead of cheesy cheddar it's blessed brie. It's Retail Relay - fresh up from the hard working brute brothas of the C-Village.

From Reids to Rebeccas and the Freshest of Fishersville Farms

• 5 of: Reid's Fresh Catfish 1 lb
• 5 of: Yellow Eye Dry Bean-1 Lb.
• 3 of: Mahatma Brown Rice Natural Whole Grain 28 oz
• 4 of: Blue Diamond Almond Breeze Non-Dairy Beverage, Original, 32 oz
• 4 of: Reid's Pork Tenderloin 1 lb
• 5 of: Reid's Ground Beef 1 lb
• 5 of: North Carolina Sweet Potatoes, price per pound
• 5 of: Jumbo Baking Potatoes-local Grown-app. Total Weight 3 Lbs.-2 Per Each
• 2 of: Local White Onions 1 lb
• 2 of: Local Sweet Yellow Candy Onions 1 lb
• 2 of: Local Hamburger Red Onions 1 lb
• 1 of: Eight O'Clock Coffee French Roast Ground Coffee 12 oz

All scored for under $100 US Dollars... whattup and when was the last time you went in to a store and spent the time to get EXACTLY what you wanted....

Go get you some http://retailrelay.com and score some Real Relative Rest and Rockn' Rolln' Relaxation @ Retail Relay

Viva le lost foam technique

After almost three months of playing with the silly stuff at work it finally dawned to test the lost foam technique - massive success. To the left are homey's initials carved in blue foam. To the right are those initials in aluminum. Absolutely wicked.
Lessons learned: Don't pack the sand too hard or air bubbles get in there. Too loose and the metal may pour out the side of the foam (especially when you pack it up around the edges of the design... This piece came out great and the little dude tore outta there 30 seconds after completion to show his bros. Most excellent.

Dr. Kolossavary, DESMOND, bilipid membranes, and other great ways to spend a weekend

DESMOND Part 1

I am behind the times so often it is startling. Dr. Kretsinger took some time on a recent hike to up it to me bluntly "It would help if you caught up to physics 1908." With that in the background, attendance at the Chem E. lecture - arranged by the Shirts Group - made for an enjoyable blitz-crash.

One of my favorite facets of America is the influx of great minds generated of great cultures. Kolossvary is of Hungarian descent, and very much looks the part - broad shoulders, thin mustache, and Mediterranean complexion... with one notable exception... the fingers of a programmer. Much like a pianist, a programmers fingers, albeit strong, are often long and dextrose. In any case Dr. Istvan fits the part of the guy who has sledge-hammered on a chemo-physio-computer engineering project around for the past 17 years. My guess is this guy's keyboards last ~3-5 months max.

At first blush DESMOND has some impressive stats. Dr. Shirts of folding@home fame chuckled throughout the lecture. At this slide he cited the first microsecond of modeling required 6 months to calculate.
Towards the bottom of the slide note the Anton - this processor, also developed by D. E. Shaw Research, works in tandem with Desmond to crunch up to 14 microseconds per day.

To facilitate we amateurs Desmond comes with a free downloadable Desmond GUI merged with Schrodinger's Maestro software. An impressive and thorough package a full license for Maestro runs in the $30K+ realm. The academic license, however, is free and provides an excellent platform to enjoy Desmond from. The pros: In fifteen minutes or so I had gone through some basic protein preparation wizard and was running Desmond through operations and getting a bi-lipid membrane like the pictured above. Amazing stuff that might have taken every bit of a month a few years ago to understand and initiate now accomplished in minutes.

Beneath the GUI hood there are even more features. To access these Desmond also comes with a command line interface - this provides additional algorithms for more in depth view and control. Navigating between the gui and command line is helped greatly by Maestro's process and file management that creates files prior to executing actions that are very simple to read and modify. Shirt enthusiastically likened these unto a voting paper trail, and I must agree it's a handy feature.

Cons: well it's not too big a deal, however there's no 64 bit binary yet, and for simplicities sake I ended up running Maestro in a virtual 32 bit machine to get everything more stable. Dr. Kolossvary indicated that this upgrade might be coming as early as this month - so stay tuned. Another planned feature includes direct reading of OPM's protein database files.

This week is finally calming down and am going to start running some simulations - stay tuned for part 2 some time in the next week or so.

The Making of Membranes

1. After importing a PDB file go to the protein preparation wizard under "workflows" on the far right hand side
2. Dr. Kosovarry recommended assigning bond orders, adding hydrogens, treating metals, capping the termini, and detecting the disulfide bonds. In his example he did not feel it necessary to delete waters... there are some other options below that are only available with the full version.... ah well... it's a start. Also there appear to be some missing AA groups and I am yet to figure out how to fix that...
3. Now under "Applications" go to "Desmond" and go to the System Builder. There are 3 solvent models available, with more on the command line - There's an ion placement submenu perhaps a ligand placement menu may appear in future versions.
4. The membrane builder menu let's you autoposition the membrane using selected atoms or amino acids - I've had moderate success in this using the selection tool to grab a bunch of atoms around the disc created by the OPM database, If you're not satisfied with the initial placement modify it clicking the "Adjust..." checkbox.
   
5. When you're ready to see your model click "Start" - depending on a 2cpu 3.2 ghz machine you'll see a model like the above in a minute or two with ~120k atoms in the case of FAAH.

charlottesville police lady rocks a "cha-ching" for the camera while writing a ticket

Parking on some frat kid's lawn - $20
Tickets to the game - $50
Police lady writing a ticket, dancing, and rocking a "cha-ching" cause your lazy butt couldn't find a parking spot.... priceless (+$15 and towing fees...)

(and yeah, I put her up to it, we were both laughing pretty hard - thank you Ma'am for being a good sport)

mexican jesus

His name is Jesus - as appears on his name tag. On his helmet, where many others put their names for clear view, he has typed "Mexican." That's right- he's our Mexican Jesus... but seriously ya'll as our nation debates as to "what to do with all these immigrants" I would encourage the following line of reasoning these "Mexicans" are vastly more "American" than your average honky walking on the street. Their ancestors were here 25,000+ years before most of the people reading this got here. Jesus here speaks some of the original Aztec language... how many "Americans" speak ONE WORD of native tongue. Most "Americans" have been in the USA less than 100 years, and are now trying to perform a repeat of the conquistadors actions. Viva la revolucion, and to all you "Mexicans" - please move to Charlottesville. We need more of you. Ya'll are way cooler than most of these immigrants from the North.

Para aquellos hablando espanol - por favor vengan todos a Charlottesville, Virginia -es la mejor ciudad en EEUU- ademas todo el mundo habla un poco de espanol aca. Hay de buen trabajo, la tierra es buena para la agricultura, la gente es bastante rica, y la clima es excelente - siqguen rockirollando amigos ;)

quick chemistry video

Well thanks to VMD, Pubchem + Pubchem Edit + Blender 3d + Biocyc.orghere's a test video of a hypothesized cannabigerolic acid synthase (aka the geranyl diphosphate transferase) that converts olivetolic acid (painted in blue + gray) into cannabigerolic acid (painted with red) need to get the gpp in there correctly and for those who must know the protein is 1U0V - I picked it for a couple reasons, however it's sorta silly cause it hasn't been structured. It's for illustration.

Charlottesville Community Bikes, Aluminum Foundries, and Bling

Had a rad time at the Cville community bike shop this weekend. We melted a bunch of aluminum and one lucky gal got some handmade hard core bling for her wheelz. And every one got to hear a bunch about aluminum, aluminum oxide, steel, slag, and a bunch of other stuff that makes the whole thing so what it is... rad.


Here's a video of the whole thing... may have said aluminum oxide 10+ times... ah well.... metallurgical chemistry = BONUS!

our daily bread board

Today working for the third week on the Arduino Diecimila chip - combined with a GM862 and a one-wire temp sensor -

From Our Daily Bre...

and so now I gotta connect that diecmila on the left to the one wire sensor to the 50 pin break-out board to get a SMS message to a buddy when the temperature drops below 26 degrees farenheit.

The software employed is arduino sdk and the One wire + arduino tutorial

taste of eli cook + some train graffiti

walking down the tracks to see eli cook rock out durty nelly's passed a train with almost 50 cars in a row of awesome tag art + graffiti - a mobile museum, festival of colors - wait until the end to see this really gnarly chick painted in amazing detail....

the track is light that gasoline from eli cooks new album electric holy fire water

it's what those of us who dig eli's rock blues van halen meets muddy water have been waiting for.... and well worth the wait. dead man is an awesome fist pounder boot stomp and santeria shakedown is straight badass.... eli's only getting better, badder, and radder - maybe we'll get a rundmc aerosmith moment one of these days... here's hoping

android v1

android rocks - a fun sdk with simple plugins to eclipse. brief little tidbit - the subclipse plugin is great too

to get svn access in eclipse get the subclipse svn plugin

be careful when installing to avoid buckminster & mylyn errors - all you need to do is click into the plugin to get to the second menu where those dependencies are visible. there's a forum thread somewhere on this - can't find it now.... it's the second step in the plugin installation process though...

after that you can access it by right clicking on your source , go to the "team" menu and "share" button -

http://code.google.com/p/aloha-bambi/source ='s all the rest of the instructions for getting svn access...

get your password that google creates for your code, and you're done

enzymatic thc & cannabinoids.... patent pending technology for sale on craigslist.org

So it's time to sell this thing. am opting for craigslist.org for marketing - also got a poster contest in the make... we'll see. this morning my quote of the day came from daniel webster -
A strong conviction that something must be done is the parent of many bad measures.

and it was right next to a quote from ole TJ about banks being bogus...

anyhow, none of it matters... on the flip side the entertainment value - and this is the stuff that rocks... is keeping me going. That and google analytics...

over a month and barely 100 visitors. that's pathetic.

the guy selling his page by the pixel got like 100 million visitors.

anyhow. craigslist rocks. see that phone number on enzyamtic-thc.com - that's the phone number made possible by some dude on craigslist who responded to my plea for a free phone within 15 minutes. By noon the next day i had a free phone to plug in to my outlet... 15 minutes later some spammer from India was calling me about my interest rates....

time... So hook it up, click on enzymatic-thc.com - it's good for a chuckle. plus there's a geeked contest with some swank y3k prizes including a 3d scanner... :)

le bus

nearing the end of the month, the end of a two year residency in my abode, and the bus project is taking shape.

here are a couple pics





And thanks go out to Todd Eli + Gaston & Wyatt for the wood... This stuff is beautiful!

getting vrml / wavefront from molecular data into blender 3d . vol 1

So far getting the VRML output from different softwares has been a bit of a chore. We started out using

• Rasmol. It renders the sticks in VRML however it doesn't do the ribbons.... stay tuned for updates this summer - the developers have noted the bug and emailed me back to say they're aimin' to squash it
• Chimera It renders the VRML for anything, however having a time getting the files in to blender
• VMD Halelujah - well it's a different approach altogether... and who'da thunk. Had to use an older version to run it on my osx 3.xx powerpc and... score - rendered to wavefront and... shazaam...

Well least surprising surprise d'jour - PDB2Blend is some wiley kraut's python script for getting the data straight - doesn't do everything VMD does... ball and stick, space fill, and a stick.... still very cool

practice and perfect

whoever said practice makes perfect is a jerk. it may make you slightly better than terrible, you're lucky when someone shows up and whoops ya. and that reminds of a singularly decent quote

"Go ahead and do your best - don't think for an instance that you're doing very well, doing much right, or worth noting, really though - go ahead and do your best, it's worth it." -Stein Kretsinger

walking the walk go the adventurers - 1600 miles of coast line from Florida to New York. http://beachwalkproject.com

Viva le Jihad - Sicily 1943

From recent work on bluespader.org surfaces this moment in history - garnered straight from the 26th Infantry log files. It is worth mentioning only as a counterpoint to current relationship status between americans and arabs at a political level. Clearly times have changed

27 July 1943

This was the 17th day of the campaign.

At 0020 hours the radio operator for headquarters listened to the message tapped out, grinned and then handed it to a runner. The runner looked at the message, also smiled, and then took it to the Staff, still up and about in the small black operations tent. Captain Dreier looked at the message, nodded his thanks to the runner and dismissed him. Next to get the news was the Colonel, who announced the news to all the officers.

The 4th Tabor would be attached to the 1st Infantry Division, and would operate on the left flank of the Division, wearing French helmets and American fatigues.

Translated, that meant a regiment of Moroccans called Goums, composed of 4 companies, would augment the division effort. These Moroccan warriors with their pigtails and brown burnous’ were not entirely new to us, either in this war or World War I. In the great summer offensives launched by the Allies in 1918, the 1st Division had operated with the First Moroccan Division on its flank. And in this war, during the Ousseltia Valley campaign, these deadly raiders had spread death and terror among the German and Italian units on the djebela guarding the road to Kairouan. The Axis troops knew that these Goumiers had a reputation for not taking any prisoners, and for delighting in fighting at very close quarters – preferable with knives. Now they were to work with us, and the chances were that the Italians and Germans would know it double-quick time the Goumiers were around. No wonder the officers grinned. They knew the short fierce raids that the Goumiers liked to launch. And they knew the incessant guard duty it entailed to ward off such sudden blows; it was bound to affect morale.

Wiki spreadsheets, city budgets, wikicalc vs jot.com vs editgrid.com

The next wave of wiki's is out, and hallelujah, they don't (all / totally) suck. Here to say editgrid.com is fantastic.

Meet the contenders:

Let me spare you the details to start out with (besides, everything listed alphabetically puts editgrid in first anyhow)

editgrid.com: comin' at ya live from Hong Kong, this bad boy has it all. There's really not a good reason in my mind to review the other commercial piece (jot.com) except to trash it and save you the reader some troubles. EditGrid is amazing, uploaded an xls file with a couple thousand rows. Formatting - retained! Multiple tables in a spreadsheet? No Problem! EditGrid has it all. This is a straight up killer ap. Posted the entire city of Charlottesville line-item budget and voila! Up in a few minutes. Not surprisingly this cite is getting hit hard at the mooment, expect some delays while their netadmins deal with the reality of being excellent.

Jot.com (now google's love child, and prolly soon to move towards non-suck is a nice application that bites bytes). It's being revamped right now, this "lucky" author got to check it out pre-google, so there's no telling what the new release will do, check back in a few months, it's google, and it's bound to get better with some resources. So far however.... nothin' werked, as they say. Cut'n'Paste your spreadsheet and watch your computer crash and burn. No format retention and formulas don't work. This thing sucks


wikicalc : Dan Brinklin worked his way in to the geek hall of fame with visicalc almost 20 years ago. His new spreadsheet wikicalc is open source gpl, and so it gets some big points for that. Indeed with a decent server this may be a killer ap. It also has some decent cut'n'paste features, however it flakes out pretty hard on a serious data load. On the plus side it retains some formulas and can do formatting - WAY BETTER THAN JOT.COM and free open source! Even its alpha release is more inspiring than the jot.com crud.