|Monday, May 9th, 2016|
|Couldn't get SD card to boot on Raspberry Pi 3 after transfer from Pi 2
ok, so forgot the upgrade the first time round.
Second time, upgrade did not write everything over because of a strange disk full
error, so eventually I ended up using:
sudo apt-get clean
[edit oh I think using sudo apt-get -f install might have helped too]
that seems to have done the trick. I went through a couple more cycles of
update-upgrade-reboot 'til upgrade was giving me 0 files to upgrade...
Pi3 now works as advertised. :D
Next: I need to figure out how to get the Slic3r gui working on Pi, and bind it to PrintRun.
more keywords: rainbow screen raspbian wheezy
|Wednesday, June 10th, 2015|
Have finally reassembled the 3D printer I was demo-ing at BalticCon. I have purchased a temp sensor for its non-existent heated bed and have wired it so that when I turn on the heated bed, it runs a biscuit fan to cool the extruder which I have been having problems with.
Demo-ing was fun. To a certain extent, 3D printers are like cat television for fen. The most exotic thing I made was a three colour bracelet with two bands of colour that are white normally but turn purple or deep rose if exposed to strong UV (the Sun being the most common source. The third colour was glow in the dark, which is white until you come back inside from going out in the sun. Some fun could be had by just giving it to someone as just a plain white bracelet, and seeing how long it takes for them to discover the additional properties.
If I ever demo again I need a larger variety of patterns to print, and probably some that I personally wouldn't find interesting.
|Thursday, April 23rd, 2015|
I purchase an advanced textiles set from sain smart. Amongst the doodads included are three kite shaped RGB LED boards (singleton LEDs) a watch battery clip board and some cloth to sew them to. Since the LED boards are big and clunky to my eye, I'm going to make peepholes for the LEDs and sew them on the back. Because I can, I'm going to use the buttonhole stitch to edge the peepholes and the Shisha (mirror) embroidery stitch to attach the boards to the cloth. Also in the kit are kids pyjama style snaps which are to be used as switchs. Snap the snaps closed and you've made the connexion. I will wire it so each snap will light one of the color elements of the LEDs so I can have red, blue, green,
red & blue, red & green, blue & green, or all three (which makes a bluish white).
Unused pieces in the kit include a piece of iron on patch material, a piece of peach coloured hyper-colour tshirt material which turns yellow when you touch it, a piece of stretchy silver grey conductive cloth, and a tilt switch. Oh and there's a needle and conductive thread which I may or mayn't use.
|Saturday, March 21st, 2015|
|Saturday, March 14th, 2015|
my printer has been down since early December. I finally found what I needed to know to reflash the firmware. First was a copy of the firmware ("Marlin-unified-v2.hex"), and a module called "dfu-programmer" DFU is a particular kind of bootloader for AVR devices.
My copy of PrintRun now connects to it and I have used it to change filaments. The printer is too noisy to test now. Am worried that the reflash has changed settings so the printer no longer accurately prints an design.
|Friday, January 9th, 2015|
Rest in Peace: John Madigan
He was a good man
Beloved by many.
|Wednesday, December 17th, 2014|
Want to clutch my head like a stunned monkey.
-got a new raspi model B+
-took a long time finding my notes on how to "burn" an image to SD
-burned the SD
-now the microSD won't latch in the slot on the B+ :C
I may end up using a twist tie, or masking tape.
|Tuesday, December 2nd, 2014|
|Tuesday, November 18th, 2014|
The internet sez I can get a copy of Dragon Age I (origins) (ps3) for seven bucks.
|Saturday, November 8th, 2014|
|More goggle stuff
Decided to skip noodling with the software and try to finish up the goggles. I took a pair of Girl Genius goggles, and found that if you take the lenses off there are perfect niches to wedge each pixel ring into. I substituted the bead chain between the two eyepieces with the necessary wiring cable wrapped with 50 lb test braided fishing line. Then I rewrote software to make mirror whirling meteors around each eye. Deosil around the right eye and widdershins around the left. The elasitic for the goggles is shot, so I think I will substitute one of those stretchy tubes that keeps glasses on, and it will provide a channel to wires through to my arduino and USB power stick.
I am toying with the idea of using a rotary encoder with button to give me mode and color shifting ability. Also I remember reading an article about how some fellow made a set of lights helpful for detecting skin cancer just using select colors of LEDs. I figure if I find the info I can do the equivalent be merely reprogramming the NeoPixels to put out matching colors.
|Friday, November 7th, 2014|
|Big Hero 6 and tinker stuff
Saw Big Hero 6 which premiered today.
It was Pretty good.
There *is* a tag scene at the end of the credits.
A friend ordered me a care package from Adafruit containing two Neopixel rings. The kind that fit into 50mm Goggles that one might see at a Sci Fi convention. I wired one up last night, and started fooling around with programming an arduino to drive it. Started with making one virtual point "orbit" at any speed and any color I wanted. Then I decided to get a little fancier by implementing a trail behind the virtual point to make it look like a comet or meteor. I did this by simply making four virtual points lined up rather than having a bunch of complicated code based on offsets. Next, noting that glowing hot things go from bright white down to dull red, I made a trail of four points going white, yellow, orange red. The result doesn't quite look like a meteor, more like someone waving a candle flame around. but it's not bad. This is where I stopped last night. More on this later.
|Thursday, October 9th, 2014|
|Tuesday, October 7th, 2014|
|So there was this broadcast of a British Viking show at the movie theatres tonight
I think it might have been because it was all simulcast, though that would imply it was being shown in britain @11-12 at night.
7 people showed up at the Bowie theater. Myself, 3 people from Clan Cambion, Eowyn & her mom, and one older gentleman I didn't get a good look at.
It looked like there was a real body in the longship before they set it on fire. I wonder if the re-enactors kept one of their buddies in the fridge to allow his funeral to be filmed?
|Sunday, August 24th, 2014|
Been having a lot of fun at Intervention, a con about internet living. Although it seems a bit more like a largely internet oriented version of SPX (Small Press eXpo).
|Saturday, August 16th, 2014|
|Sunday, August 10th, 2014|
I managed to compile and print out a stretchy bracelet today Thingiverse thing: 13505 This means I've achieved a certain level of control of the output of my slicing software, and of the printing quality of my machine. Someday RSN I need to work on actually producing 3D models (,stl) rather than just printing them out.
|Tuesday, July 22nd, 2014|
Spent over two hours, so far, loading Slic3r and the files it depends on to my razzpi (slic3r converts CAD files to files a 3d printer can read). One of the math package files it depends on is called Devel::GlobalDestruction. It makes me kinda afraid to open slic3r when it gets done. I think I'll do lunch now.
|Monday, July 21st, 2014|
|dabbling with 3d printing (almost)
I've spent since thursday night cobbling together a 3d printer kit that I got called a Printrbot Simple. It was mostly straightforward but a few snags have caused it not to be ready to test until a couple hours ago. The next hurdle is getting software that will run on a Raspberry Pi to drive the printer. Found a suite of python scripts that actually made the printer *go home*, but it's to late to do more w/o disturbing somebody's sleep. Assuming a successful testing, will have to decide what to print from thingiverse first.
|Friday, May 9th, 2014|
|Sunday, April 6th, 2014|