Pacman train car prototype on Flickr.
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Pacman train car prototype on Flickr.
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- Lots of links from the shapeoko forums
- Guerrilla Guide to CNC Machining
- CNC Cookbook
- Bearing Preload
- CoreXY- XY linear motion with stationary motors
- Harrison & Bonini fastening hardware in SOMA
- Bowlin Equipment in Berkeley
- eShapeoko – a shapeoko with lots of upgrades
- ImplicitCAD - open source WebGL programmatic CAD program
- grecode – cli program to manipulate gcode
- MakerCAM – simple open source flash software for generating gcode
- gcodetools – the Inkscape plugin I use for generating gcode from SVG
- software for making dovetails – with beautiful examples
DIY Wood toys:
CNC for the whole family on Flickr.
CNC for the whole family on Flickr.
I’ve been getting everyone to help me with the Shapeoko CNC mill that I’ve been putting together. Ravi loves using the arrow keys to draw with a Sharpie zip tied to the spindle mount. My dad has been helping me figure out how to keep the stepper drivers from overheating. Wholesome CNC family fun!
Rode my e-bike to the top of San Francisco on Flickr.
Shag convinced me to get an e-bike. It is the total opposite of my other bike.. it’s an electric, step-through, made of steel, quite heavy, with fenders and chainguards and a kickstand. But like my other bike, it is pretty magical…
Laughing Man stencil in Golden Gate Park on Flickr.
The Curiosity Rover sent out this tweet this morning:
Heads up! No, really. My head’s up. Mast deploy successful. I’m looking around, taking Navcam images #MSL
It included this image which shows a cool pixel art logo on the front bumper (Update: it is an AR tag that can be used in the future with smart phones to obtain more information about the mission):
Here is a reproduction of the pixel art logo:
I created it using this script:
I ordered a Shapeoko CNC mechanical kit from Inventables, but still need to order the remaining parts. The purchasing page is a good starting place and lists a bunch of options. Here is what I think I need to order (already have the arduino an dremel):
- Synthetos grblShield with Shapeoko mod – there are a bunch of arduino shields available for driving stepper motors, but this is the one that will ship with the full inventables kit, so I’ll just go with that. Also, this shield includes stepper drivers. $69.99
- Synthetos heat sinks for stepper drivers – $6.99
- shipping: $5.35 for a double order
- NEMA 17 Stepper Motors – $16.95 * 3
- shipping: $14.68 UPS ground for a double order (6 motors)
- 24V 4.5A power supply – $29.95
- shipping: $7.56 for two
- tax: $4.34 for two
Unfortunately, sometimes Comcast is your only internet option. And sometimes you want to configure a Time Capsule as a wireless router for your parents, who happen to have Comcast. So you plug in the Time Capsule, configure it using Airport Utility, and it doesn’t work.
Well, that is no surprise, because you have Comcast, the worst internet provider on the planet. You would think you could just plug in a new device into a comcast cable modem, but you would be wrong. So you follow these instructions to Get Apple Time Capsule to work with Comcast.
Apparently that is all it takes for most people. But after I followed those steps, the Time Capsule could connect to your Comcast cable modem, but when I tried to use the Time Capsule as a wifi access point, I discovered that something was still borked. I couldn’t load any web page, DNS fails, you can’t ping any IP address, etc.
Here is how I got a Time Capsule configured with Comcast.
1. Follow those Get Apple Time Capsule to work with Comcast steps from above.
2. Now, with your Time Capsule connected to your cable modem with an ethernet cable, you open up Airport Utility and see something like the screen shot below. There is a little green dot next to your Time Capsule, but a orange dot next to the Internet icon, and clicking on the Internet icon says “Disconnected”.
3. I don’t know why, but my Time Capsule started up configured in Bridge mode. We need to change it to DHCP+NAT mode. In Airport Utility, click on the Time Capsule icon, and choose Edit (see the bottom arrow in the screen shot above.
4. Choose the Network tab, as shown below. Change from Bridge mode to DHCP and NAT mode.
5. Click the Network Options… button at the bottom to set your IPv4 range. I changed it from 10.10 (the default) to 192.168, as shown below.
Save your settings, and you should be good to go!
Tymm pointed me to this Microsoft Research paper on Depixelizing Pixel Art:
Naïve upsampling of pixel art images leads to unsatisfactory results. Our algorithm extracts a smooth, resolution-independent vector representation from the image which is suitable for high-resolution display devices.
There are a bunch of sample images here. Check out the upscaled Bowser:
Space Invaders is pretty wild:
I read Ready Player One a few months ago based on Aaron’s suggestion. It’s Ernest Cline’s first novel, and is a fun read. If you grew up playing video games in the 80s, then you’ll absolutely love this book, because it is full of an insane number of references to old video games and nerdy 80s culture.
Yesterday, the author announced that the book contains an Easter Egg which leads you to the first of three video game challenges, similar to the challenges in the plot of the book. And the first challenge is a ROM that you can download and play on an Atari 2600. And the prize is a DeLorean!
I totally missed the easter egg, which is hidden somewhere in the novel. Maybe because I read the whole thing in two sittings over a single weekend. Actually, no one found the easter egg until after Cline announced it, 10 months after the book was published.
I guess I should hurry up and re-read the book and try to find the first gate. The second challenge becomes available on July 1, and the third gate opens a month after that. The amount of work that went into the easter egg is quite impressive!
Autonomous Sensory Meridian Response (ASMR) is a physical sensation characterized by a pleasurable tingling that typically begins in the head and scalp, and often moves down the spine and through the limbs.
There is no sure-fire trigger for ASMR, and not everyone experiences it. But this video of scratchy writing with fountain pen is a good start (ignore the Ayn Randiness):
One of the Blade Runner Convention Reels featuring interviews with Ridley Scott, Syd Mead and Douglas Trumbull about making Blade Runner universe. This 16 mm featurette, made by M. K. Productions in 1982, is specifically designed to circulate through the country’s various horror, fantasy and science fiction conventions.
IBNIZ is a virtual machine designed for extremely compact low-level audiovisual programs. The leading design goal is usefulness as a platform for demoscene productions, glitch art and similar projects. Mainsteam software engineering aspects are considered totally irrelevant.
Via @textfiles, here is an old catalog of woodworking products from 1890. It is amazing how little woodworking tools have changed since then!
The Japanese movie “Fish Story” is really great. You should watch it! It is on netflix instant and KenFlix…
This video does not give away the plot:
Here is a video of cutting a stencil at rAncHtrOnix last week, posted here just because we can now embed reasonably-sized videos on the blog!