ChainringGen is an OpenSCAD script I wrote that can generate a bike chainring with any specifications you like.
You can download ChainringGen here: https://github.com/nothinglabs/chainringgen
You can control parameters like bolt-circle-diameter (BCD), number of bolt holes, number of teeth and other stuff.
I primarily created ChainringGen … (read more)
Download this design at Thingiverse here:
http://www.thingiverse.com/thing:507900
So – about a year ago I bought a touring bike – a Novara Randonee.
I had just assumed the included SRAM TT500 bar end shifters had a friction mode. Having the option to friction shift is one … (read more)
I have finally gotten around to documenting my Arduino powered laser show that uses audio speakers for Galvos.
Full documentation and source code is available via this Instructable.
Quite happy with the way it works now:
The “home” for this project (and it’s Twitter … (read more)
Find out how to build your own peltier cloud chamber here:
http://www.nothinglabs.com/cloudchamber/
Turns out my new Thorite sample emits a fair amount of Radon 220 (aka Thoron)…… (read more)
3d print your own speaker enclosures!
This OpenSCAD / Thingiverse Customizer script lets you:
– Generate a box of any desired volume / ratio / wall thickness- Determine optimal sealed box size for any driver using Thiele / Small parameters (Qts, Vas and Fs)- Include … (read more)
UPDATE: BlinkyBird has inexplicably been updated to work with Glass XE22 (11/17/2014)!
I’ve been intending to write some kind of Google Glass app for the last several months – but was having trouble getting inspired.
Then it hit me – how about a Flappy Bird … (read more)
A few weeks ago I gave a presentation at Ada’s Technical Books on two of my favorite projects:
Peltier Cooler Based Cloud Chamber
Arduino Powered Laser Show
Thanks to Ada’s for hosting and the great write-up in their blog and awesome photos.
If you’re … (read more)
I’d been thinking about better ways to attach things like lights and pumps to my bike for a while.
Click Here to check out ElastoStraps on Thingiverse.com!
I recently saw some commercially available bike lights that had elastic-style fasteners built into their design – and … (read more)
ProfTweak 1.4 now supports Makerbot Desktop. It also fixes a bug in ProftTweak v1.2 and v1.3 that can cause bad profiles (update now!).
I’m a big fan of MakerWare and the MakerBot slicer.
The recent improvements in rafts, supports and general slicing quality … (read more)
I recently gave a presentation on “alternative” filaments you can use with your 3d printer.
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My focus was on filaments you can print without a heated build platform (HBP) – mainly due to my own printer (a Makerbot Replicator 2) not having one.
A common … (read more)
About a week ago I finished my first major organized bike ride – the Seattle to Portland Bicycle Classic – or STP.
It’s 204 miles from start to finish – about 210 if you count starting at my house. Most people do the … (read more)
This blog post is from 2013! See here for a much-improved 2023 version: http://www.nothinglabs.com/3d-printed-bike-shifter-2023-update/
I’m doing my first big organized bike ride in a couple weeks – the STP (Seattle to Portland). I was thinking it might be fun to do a 3D printed part … (read more)
My friend Rob Flickenger recently had some dental work done – and managed to score a 3D model of his skull generated from a panoramic x-ray as a bonus.
We got together at a local hackerspace to do a few prints on my Makerbot Replicator … (read more)
I’ve kind of been obsessed with trying to make circuit boards on my laser cutter since I got it. Other people had already done this by using spray paint as resist – then laser-etching the paint off non-trace portions of the board. This process still … (read more)
A while back I fumbled into Acid Cow’s idea for a Money Shredding Alarm Clock.
I figured turning the concept into reality shouldn’t be too hard.
All I needed was a few main parts:
SparkFun’s ClocKit
A USB Powered Paper Shredder
TIP120 Darlington Transistor… (read more)
I’ve had my laser cutter (Full Spectrum 40-watt CO2) for about 1.5 years – and over that time have spent a good amount of time trying to make circuit boards on it. To be clear – I wanted to cut circuit boards. Others … (read more)