Jeff Epler's blog : all entries

About me

I've been a computer programmer since I first started typing in program listings on a Commodore Vic 20 when I was about 8. My hobbies include electronics, CNC manufacturing, photography, beer and winemaking.

I live with my wife and lots of left-over parts from unfinished projects in Lincoln, Nebraska, USA.]

Blog

20 June 2026, 13:45 UTC

Python multiline input: Using _pyrepl in your own code

19 May 2026, 3:41 UTC

The oldest bug I ever fixed? (no)

1 May 2026, 21:49 UTC

Having fun programming

9 March 2026, 20:55 UTC

radix40 encoding

15 December 2025, 2:34 UTC

"interlz5" in Python -- Apple II text adventure adventures

26 November 2025, 16:09 UTC

Junk drawer & embedding

10 October 2025, 20:56 UTC

Thick As A Brick / St Cleve Crossword solution

8 September 2025, 15:06 UTC

Migrating from github to codeberg: existing readthedocs projects

26 August 2025, 13:18 UTC

Variations on 'if TYPE_CHECKING'

15 May 2025, 14:33 UTC

Dear Julian

30 December 2024, 19:06 UTC

Mutual Tail Recursion in Python, fully mypy-strict type checked

6 October 2024, 19:32 UTC

Enabling markdown

6 October 2024, 14:15 UTC

Talking directly to in-process tcl/tk

26 July 2024, 0:17 UTC

Vintage X Bitmap Font "VT100 graphics characters"

9 July 2024, 2:33 UTC

datetime in local time zone

1 July 2024, 18:44 UTC

Sunflower Butter aka Sun Butter or Sunbutter (plus Chocolate Sun Butter)

2 June 2024, 12:31 UTC

An efficient pair of polynomials for approximating sincos

31 May 2024, 2:04 UTC

Leaving my roles in LinuxCNC

13 January 2024, 15:04 UTC

Linux ThinkPad T16 Microphone "Muted" Indicator

15 November 2023, 20:46 UTC

Notes on using skyui with Skyrim Anniversary Edition from GOG

7 July 2023, 13:49 UTC

"Letter Boxed" puzzle statistics

6 July 2023, 19:04 UTC

NYT "Letter Boxed" solver in C++

8 June 2023, 22:51 UTC

Conservation of Experience

11 May 2023, 12:27 UTC

Xerox 820 & CP/M

27 March 2023, 0:01 UTC

Welcome to the Polity

15 March 2023, 19:31 UTC

One way to fix pip externally-managed-environment error in debian

21 December 2022, 15:12 UTC

A quick example of transforming Python with libcst

7 November 2022, 1:35 UTC

Local coordinate systems in OpenSCAD

4 September 2022, 2:11 UTC

Recent keyboard deeds

31 August 2022, 2:14 UTC

Don't wreck your system with miniconda/anaconda

15 April 2022, 16:23 UTC

Generate the 64 GCR values used by Apple DOS 3.3 and ProDos

15 April 2022, 2:14 UTC

An interesting finding about Apple DOS 3.3 diskettes

15 March 2022, 21:13 UTC

An interesting Disk ][ Interface Card Fault

29 January 2022, 19:38 UTC

Stuff I did in 2021...

5 January 2022, 3:44 UTC

Where should CircuitPython go in 2022?

7 December 2021, 15:07 UTC

The Most Surprising Optimization I've Seen Lately

3 November 2021, 21:27 UTC

80columns

31 October 2021, 14:17 UTC

Estimating WWVB Signal Health

30 October 2021, 21:12 UTC

Use printf() in Arduino programs

25 October 2021, 2:19 UTC

CWWVB: Putting what I've learned about WWVB to use in a new decoder

21 October 2021, 0:23 UTC

WWVB Observatory

5 October 2021, 23:41 UTC

My experience adding type annotations to a 2.5k-line Python library

18 August 2021, 19:03 UTC

Using Adafruit Macropad as LinuxCNC Control Pendant

9 August 2021, 23:44 UTC

OBS "insert current timestamp" hotkey

5 August 2021, 15:41 UTC

Collatz-bolge: A non-universal language, unless the Collatz Conjecture is false

13 July 2021, 21:05 UTC

Hybrid Keyboard Descriptor supports Boot & NKRO

10 July 2021, 19:12 UTC

CircuitPython NKRO Keyboard

24 June 2021, 1:43 UTC

Quick CircuitPython Driver for ES100 WWVB Receiver

15 June 2021, 14:24 UTC

wwvb uploaded to pypi

13 June 2021, 1:15 UTC

7 1/2 years of Prius fuel economy

26 May 2021, 17:54 UTC

Semi-revived: Novelwriting

18 April 2021, 14:45 UTC

More Fibonacci?

13 April 2021, 2:30 UTC

Updated 'On the license of my Free Software'

9 March 2021, 16:23 UTC

Some exercises from Technical Drawing (Giesecke et al., 1949)

24 February 2021, 2:57 UTC

Calculating unreasonably large Fibonacci numbers quickly

3 February 2021, 14:20 UTC

Heat-staking in 3D prints

30 January 2021, 16:21 UTC

wwvbtk: Visualize wwvb timecodes with Tkinter

23 January 2021, 16:42 UTC

Wrap text according to font width in CircuitPython

6 January 2021, 1:06 UTC

Seven Years of Prius (2013) Fuel Efficiency

2 January 2021, 15:30 UTC

Where should CircuitPython go in 2021?

1 December 2020, 2:37 UTC

ForkAwesome font converted for CircuitPython

6 November 2020, 1:54 UTC

Head Scratching C(++) Bug

1 November 2020, 16:18 UTC

wwvbgen updates

7 September 2020, 14:31 UTC

Pi Zero W USB Proxy

27 August 2020, 21:10 UTC

GPS and relativity

18 August 2020, 1:55 UTC

Some notes on the Si5351a

16 August 2020, 18:05 UTC

Si5351 Frequency Planner in Python

18 July 2020, 13:21 UTC

Quad CharliePlex FeatherWing hack

17 July 2020, 21:37 UTC

Minimal Time-Zone Handling for CircuitPython

16 July 2020, 18:22 UTC

Calibrating the DS3231 and PCF8523 RTCs

16 July 2020, 15:12 UTC

Helpful Scripts for CircuitPython & Real Time Clocks (RTCs)

9 July 2020, 17:55 UTC

Raspberry Pi Gross Hacks

29 June 2020, 1:19 UTC

Software I want: Self-hosted 3D-printing static site

16 June 2020, 14:04 UTC

Black Lives Matter

19 March 2020, 19:41 UTC

Updates

2 January 2020, 21:15 UTC

Six Years of Prius (2013) Fuel Efficiency

25 June 2019, 1:39 UTC

Future directions for SCORPION STARE: 2022 Grant Recipients

6 June 2019, 12:19 UTC

Yet another Raspberry Pi Stratum 1 NTP server

3 June 2019, 1:17 UTC

Precision vs Accuracy: A Clock

14 May 2019, 20:45 UTC

Generating "Table 6" of the withdrawn SIMON-32/64 paper

8 May 2019, 21:53 UTC

Cura vs GPX vs dual extruder temperature: A FIX!

22 April 2019, 23:18 UTC

Kardashev and Drake were wrong: The galaxy is full of hard to detect, slow-growing civilizations

20 April 2019, 15:11 UTC

Hello, Allo

20 April 2019, 14:54 UTC

Another Qidi Tech I update

7 April 2019, 20:42 UTC

Linux: don't wake display on mouse motion

9 March 2019, 1:33 UTC

The Drake-Howard Equation

23 February 2019, 16:52 UTC

Re: Ideas box submissions

1 January 2019, 18:56 UTC

Qidi Tech I

1 January 2019, 15:51 UTC

Five Years of Prius (2013) Fuel Efficiency

27 December 2018, 16:17 UTC

Pierre, 2001-2017; Marie, 2001-2018

18 November 2018, 20:59 UTC

Codeword TESTAMENT COBALT

22 October 2018, 20:57 UTC

Codeword BISON ZENITH

22 October 2018, 20:16 UTC

Codeword BISON MERIDIAN

28 July 2018, 13:19 UTC

GPSDO: An attempt that is too simple

24 July 2018, 2:18 UTC

keyestudio gps shield as frequency counter

15 July 2018, 15:59 UTC

Fun with frequency

30 April 2018, 22:42 UTC

All integers 0 through 1,000,000 from short, digitless dc programs

23 April 2018, 2:50 UTC

Code size for bit reversing algorithms

26 March 2018, 23:51 UTC

Fuzz-testing CircuitPython

17 February 2018, 17:31 UTC

Watch Repairs

10 February 2018, 2:58 UTC

Finding all numbers produced by short, digitless 'GNU dc' programs

2 January 2018, 19:48 UTC

Four years of Prius (2013) fuel efficiency

6 August 2017, 2:26 UTC

poc: Python OCE Composer

1 August 2017, 0:48 UTC

occmodel as Python alternative to openscad

12 July 2017, 14:34 UTC

MP Select Mini: Heated Bed Repair

6 June 2017, 11:54 UTC

My internet usage would fit on six 33.6kb/s modems on average

18 May 2017, 0:16 UTC

Monoprice Select 3D Printer Review (part 4)

3 May 2017, 0:22 UTC

Monoprice Select 3D Printer Review (part 3)

19 March 2017, 20:16 UTC

Time Reversed Cosmology

7 January 2017, 13:50 UTC

Monoprice Select 3D Printer Review (part 2)

3 January 2017, 23:02 UTC

Three years of Prius (2013) fuel efficiency

19 November 2016, 19:08 UTC

Monoprice Select Mini 3D Printer Review

16 November 2016, 2:04 UTC

Monoprice Select Mini, sight unseen

11 October 2016, 20:16 UTC

Some small github integration scripts

17 September 2016, 16:08 UTC

LinuxCNC on BeagleBone Black, Raspberry Pi, Odroid U3, Odroid XU4

19 August 2016, 14:38 UTC

Will an Electric Vehicle save on CO₂ emissions anyway?

17 August 2016, 12:51 UTC

Imagine (software developer version)

11 August 2016, 22:07 UTC

Does an electric car make economic sense?

10 August 2016, 11:56 UTC

LinuxCNC on Beagle Bone Black

9 August 2016, 1:54 UTC

LinuxCNC: Which kernel, which package?

26 July 2016, 16:23 UTC

Star Trek: Beyond as a 4-episode mini arc

23 June 2016, 11:50 UTC

Installing and testing jessie-backports realtime kernels from debian archive

18 June 2016, 17:13 UTC

Saturday Software Project: VIC 20 Incremental Game

11 June 2016, 1:04 UTC

linuxcnc: Getting to the compile errors on freebsd

9 June 2016, 15:43 UTC

Capital Laundry Services document leak

7 June 2016, 1:40 UTC

Bye Bye Netflix (blacklisting he.net ipv6)

19 March 2016, 23:35 UTC

New Desktop 2016

1 March 2016, 2:56 UTC

Literal copying of GPL code into ZFS on Linux

16 January 2016, 22:15 UTC

Ancho Reyes Hot Chocolate

30 December 2015, 19:38 UTC

Coolest C Preprocessor Trick of the Year

2 December 2015, 23:12 UTC

Free Software, Meritocracy, and why I try to listen when 'SJWs' speak

11 November 2015, 13:58 UTC

Community Builder reCAPTCHA

4 November 2015, 15:34 UTC

HTTPS enabled thanks to Let's Encrypt

12 October 2015, 14:03 UTC

NEJE "ROSH" 300mW laser engraver with LinuxCNC

8 October 2015, 19:52 UTC

Turning off ads and google analytics

10 September 2015, 13:02 UTC

Super Formula Guilloché Patterns in javascript/svg

1 September 2015, 14:39 UTC

DragonBoard™ 410c with rt-preempt failure

5 August 2015, 13:13 UTC

Proven Delights (and what are proofs anyway)

28 February 2015, 21:32 UTC

Hazelnut Coffee and Hazelnut-Sunflower-Chocolate Butter

19 February 2015, 19:31 UTC

Cheating at incremental games using angularjs

13 January 2015, 15:43 UTC

Maria Island

2 January 2015, 13:55 UTC

One year in a Prius

17 December 2014, 17:37 UTC

First Half of Tasmania

9 December 2014, 23:14 UTC

Uptime on digitalocean

12 November 2014, 0:42 UTC

Great Ocean Road

24 October 2014, 15:40 UTC

LinuxCNC at TXRX Labs

14 October 2014, 13:47 UTC

Sprint recompression of JPEG files

10 October 2014, 1:30 UTC

Halls Gap Zoo

1 October 2014, 14:10 UTC

Digital Ocean vs Atlantic.net: Some simple (and simplistic) benchmarks

20 August 2014, 14:04 UTC

Kingfisher Cruise

7 August 2014, 11:22 UTC

Odroid U3 with kernel 3.8.13.14-rt31

27 July 2014, 2:13 UTC

Minnesota 2014

22 July 2014, 16:52 UTC

Tasmania #2

14 July 2014, 14:31 UTC

Who's most forgetful? Mac users.

24 June 2014, 12:35 UTC

Better pasting for irssi in X

22 June 2014, 17:56 UTC

A Faster-than-light travel idea for SF setting

22 June 2014, 1:36 UTC

Niagara Falls, NY State & Penn State

15 June 2014, 19:19 UTC

Tasmania Sites #1

3 June 2014, 2:59 UTC

Zoos in Victoria

17 May 2014, 20:10 UTC

Healesville Sanctuary

15 May 2014, 16:28 UTC

Samsung ARM Chromebook: the portable I've always wanted

10 May 2014, 16:53 UTC

More Sites Around Victoria

30 April 2014, 21:14 UTC

Towards fast I/O in Arduino for AVRs

18 April 2014, 20:27 UTC

Victoria Sites

15 April 2014, 1:36 UTC

GemCraft: Chasing Shadows "Grey Trees" puzzle

13 April 2014, 14:12 UTC

GemCraft: Chasing Shadows compass puzzle

8 April 2014, 15:41 UTC

Hacking flash apps...

30 March 2014, 18:59 UTC

Australia: Granite Gorge, Fitzroy Island and Lake Barrine

21 March 2014, 19:10 UTC

Port Douglas Wildlife Habitat

13 March 2014, 1:27 UTC

Southern Florida Nature

9 March 2014, 18:02 UTC

Florida 2014 (mostly Everglades)

24 February 2014, 13:10 UTC

How do you check a signature on a PGP/Mime message

23 February 2014, 2:11 UTC

Northern Georgia Waterfalls

19 February 2014, 21:17 UTC

Red: the perfect unit of measurement?

15 February 2014, 14:35 UTC

Tropical Rainforest

3 February 2014, 22:33 UTC

Australian Coral Reefs

31 January 2014, 18:05 UTC

Mosh automatic cleanup of dead sessions

30 January 2014, 1:01 UTC

Big Day Out

27 January 2014, 18:03 UTC

Royal Botanic Gardens Melbourne

25 January 2014, 16:17 UTC

Ctrl-digit to switch to tab on Linux Firefox

24 January 2014, 17:06 UTC

Got A Chromebook

23 January 2014, 22:18 UTC

pnacl vs Debian Jessie

2 January 2014, 15:07 UTC

Eek, ads

21 December 2013, 3:53 UTC

First few weeks on Digital Ocean

13 December 2013, 23:26 UTC

Benchmarking ungeli on real data

6 December 2013, 19:31 UTC

Changing hosting providers

2 December 2013, 19:30 UTC

mailpie moves to github

30 November 2013, 2:29 UTC

Decrypting geli volumes with portable software

25 November 2013, 17:53 UTC

Butternut Squash Casserole (a Kirst Family Recipe)

25 November 2013, 2:31 UTC

Encrypted ZFS for off-site backups

23 November 2013, 18:19 UTC

SNTP from Python: getting server's esimate of time quality

20 November 2013, 17:06 UTC

TCP connections to X server

4 November 2013, 21:38 UTC

report-if-fail, replace-if-success

9 October 2013, 13:11 UTC

My ZFS replication script

2 October 2013, 19:19 UTC

Callcentric "click 2 dial" commandline client

30 September 2013, 14:19 UTC

GNU 30th—Celebrating 30 years

19 September 2013, 1:34 UTC

Debugging realtime components in UBC3

16 July 2013, 16:32 UTC

Rotary Delta Kinematics

15 July 2013, 14:29 UTC

Got a 3D printer

12 July 2013, 11:28 UTC

Linear Delta Kinematics

4 June 2013, 14:43 UTC

repitch: adjust audio by semitones during replay

20 May 2013, 21:37 UTC

tardiff: diff two (compressed) tar files without extracting

9 May 2013, 18:43 UTC

I hope my kfreebsd box is still bootable...

24 April 2013, 2:51 UTC

Dropping Amazon Prime...

8 April 2013, 2:50 UTC

Just bottled

4 April 2013, 12:50 UTC

More new hardware: Lenovo Thinkpad T530

2 April 2013, 14:15 UTC

GPG Key

16 March 2013, 14:32 UTC

New thing: BlurBlog

6 March 2013, 13:59 UTC

Adventures in localization

19 February 2013, 22:42 UTC

Online Anagrammer with AJAX

6 February 2013, 14:59 UTC

The growth of Unicode over time

17 January 2013, 16:34 UTC

moinmoin cleanup script

14 January 2013, 13:42 UTC

Hash saturation calculator

4 January 2013, 20:37 UTC

Screen-scrape ting device usage

10 December 2012, 20:21 UTC

New hardware

1 December 2012, 16:52 UTC

OpenID Delegation is easy!

1 December 2012, 1:12 UTC

Android "Birds of Australia" unpacker

14 October 2012, 21:23 UTC

lvm + snapshots + uuid = assbitten

9 October 2012, 23:26 UTC

Training Farm kickstarter

9 October 2012, 2:30 UTC

FTL (un)packer for Linux

8 October 2012, 22:50 UTC

Connectbot patches for Nexus 7 + Bluetooth Keyboard

1 October 2012, 15:49 UTC

Change

6 September 2012, 14:44 UTC

2008 Honda Fit Sport tire size

20 August 2012, 2:30 UTC

Fitler: munge long headers for display in mutt

15 August 2012, 13:01 UTC

How to become a felon: by reading the newspaper edition

30 July 2012, 20:08 UTC

Fun with iBird on android

16 July 2012, 23:30 UTC

Salsa-Poached Huevos Rancheros

28 June 2012, 16:24 UTC

Friendlier unicode entry in rxvt-unicode

13 June 2012, 12:49 UTC

StippleGen 2—Stippler, turned friendly

29 May 2012, 13:03 UTC

A use for log1p

14 May 2012, 14:15 UTC

LG Optimus S on ting MVNO

2 May 2012, 0:31 UTC

Hosting Troubles

4 April 2012, 12:54 UTC

dusub: Subtract two 'du'-style listings

14 March 2012, 15:04 UTC

Google Literal Search for Firefox

13 March 2012, 14:26 UTC

Concept: Using rolling shutter for digital IS

7 March 2012, 15:42 UTC

Cancellation error

6 March 2012, 1:41 UTC

WWVB CRT mock-up

6 March 2012, 1:35 UTC

Every once in a while, ssh is too slow

29 February 2012, 15:42 UTC

Half-maximize script for Linux

28 February 2012, 3:19 UTC

Every once in a while, Python is too slow

19 February 2012, 16:54 UTC

sorttop: show the biggest values as a program runs

10 February 2012, 2:55 UTC

HTC Detail on ting MVNO

22 January 2012, 20:54 UTC

15 years of photography

20 January 2012, 13:51 UTC

30+ years of computers

18 January 2012, 1:11 UTC

Transfer of contacts from LG Remarq to Debian GNU/Linux

16 January 2012, 13:36 UTC

Moving my blog hosting

5 January 2012, 23:12 UTC

Time to finish that languishing clock project!

27 December 2011, 20:35 UTC

It's gratifying when the compiler is right

18 December 2011, 14:42 UTC

Need another reminder to steer clear of non-Free software?

13 December 2011, 2:29 UTC

Ingrid's Canadian Rockies Photos

11 December 2011, 2:40 UTC

New Site Look

25 October 2011, 14:23 UTC

Cheeseball Barley Wine

16 October 2011, 15:31 UTC

csql: perform sql queries on csv data

16 October 2011, 13:20 UTC

Source: USB Stacker for EOS Cameras

11 October 2011, 3:17 UTC

Focus Stacking Success

20 September 2011, 18:49 UTC

tnef2mime: automatically extract parts from winmail.dat

13 September 2011, 12:53 UTC

Caching

12 September 2011, 20:29 UTC

WWVB clock progress

9 September 2011, 12:04 UTC

Sorry, RSS Readers

6 September 2011, 22:38 UTC

Sunday at the Zoo

28 August 2011, 22:49 UTC

Enabling caching of my blog...

26 August 2011, 2:25 UTC

Two days in Banff

24 August 2011, 22:24 UTC

Canada: Calgary

14 August 2011, 18:57 UTC

Canadian Rockies Panoramas

13 August 2011, 17:58 UTC

Linux RAID Misdetection (and fix)

25 July 2011, 13:41 UTC

wwvbpy: WWVB timecode generator in python

23 July 2011, 19:15 UTC

California: Odds and Ends

19 July 2011, 2:16 UTC

Ingrid's California Photos (part 2)

18 July 2011, 1:27 UTC

Ingrid's California Photos (part 1)

26 June 2011, 18:44 UTC

Elkhorn Slough Boat Tour

23 June 2011, 21:38 UTC

Side track: wwvb links

22 June 2011, 20:19 UTC

Towards my GPS LED Light Clock

16 June 2011, 3:41 UTC

Monterey Bay Aquarium - Jellyfish

14 June 2011, 3:18 UTC

Some California Photos

31 May 2011, 12:39 UTC

Mandelbulber fractals

27 May 2011, 12:44 UTC

Search kindle store by price, sort-of

19 May 2011, 20:49 UTC

srtrename: rename subtitle files to match video files

18 May 2011, 12:54 UTC

almost-integers from tan()

18 April 2011, 15:42 UTC

Fractal animation

8 February 2011, 14:01 UTC

urxvt: on-the-fly font changing

1 February 2011, 16:33 UTC

Custom compose sequences in X

12 January 2011, 23:43 UTC

300mm at the zoo

12 January 2011, 14:00 UTC

Abstract Magnet Photos

7 November 2010, 14:09 UTC

Debian? Sounds good to me!

17 July 2010, 21:32 UTC

Dresden Photos

10 June 2010, 12:23 UTC

Jeff's Barcelona Botanical Garden Photos

6 June 2010, 20:23 UTC

Jeff's Barcelona 2010 photos

28 May 2010, 1:29 UTC

Apfelwein Success

22 May 2010, 17:25 UTC

Photos from Marburg

17 May 2010, 1:35 UTC

Frankfurt Palmengarten

13 May 2010, 0:15 UTC

Photos from the Barcelona Botanic Garden and nearby

3 May 2010, 14:27 UTC

hostmot2-firmware 0.6 released

1 May 2010, 15:24 UTC

Making Cider

29 April 2010, 18:49 UTC

All my Europe 2010 photos

21 April 2010, 8:14 UTC

Frankfurt Palmengarten

3 March 2010, 13:22 UTC

hostmot2-firmware 0.5

3 March 2010, 13:15 UTC

RELEASED: emc 2.3.5

5 February 2010, 23:47 UTC

Soldering "helping hands" made with Loc-Line coolant hose

16 January 2010, 23:23 UTC

hostmot2-firmware 0.4

31 December 2009, 15:23 UTC

Installing Ubuntu 9.10 on TA790GX XE + AMD Athlon II X2 245 Regor

20 December 2009, 0:49 UTC

Lights

10 November 2009, 16:00 UTC

Arduino Random Number Generator

28 October 2009, 14:37 UTC

RELEASED: emc 2.3.4

14 September 2009, 1:47 UTC

Ingrid's Minnesota Photos

7 September 2009, 0:41 UTC

Lauritzen Gardens

30 August 2009, 23:35 UTC

Minneapolis Bugs and Stuff

20 August 2009, 22:48 UTC

Zenbot is back in business

15 August 2009, 2:16 UTC

Misc. Macros

13 August 2009, 0:59 UTC

Fortune cookies

2 August 2009, 15:04 UTC

More photos from the yard

24 July 2009, 2:42 UTC

View my photostream

24 July 2009, 2:19 UTC

CropGUI 0.1.1: now with gtk

22 July 2009, 0:30 UTC

Ingrid's Garden

21 July 2009, 2:18 UTC

Ingrid's photos from Chicago

19 July 2009, 21:09 UTC

Chicago: Garfield Park Conservatory

9 July 2009, 21:55 UTC

Wasps!

7 July 2009, 12:10 UTC

RELEASED: emc 2.3.2

4 July 2009, 1:35 UTC

KC Photos 2009

29 June 2009, 12:19 UTC

at90usb162 single-sided board

29 June 2009, 1:20 UTC

Powell Gardens

22 June 2009, 1:41 UTC

Zenbot upgrades

26 May 2009, 12:58 UTC

Twilight hack source code

25 May 2009, 21:20 UTC

Remebering values between runs of emc

17 May 2009, 18:36 UTC

Released: EMC 2.3.1

12 May 2009, 14:33 UTC

g++ trick for initializer lists

6 May 2009, 2:10 UTC

Wildlife Safari visit

5 May 2009, 1:43 UTC

qq: quick & dirty terminal

2 May 2009, 12:56 UTC

New hardware

1 May 2009, 13:34 UTC

DAT-160 USB tape drive on Linux

19 April 2009, 19:35 UTC

RELEASED: emc 2.3.0

19 April 2009, 2:16 UTC

Kansas City, St. Louis, and Champaign trip

31 March 2009, 22:02 UTC

Netflix 'Watch Instantly' problems

29 March 2009, 16:14 UTC

Beta release: emc 2.3.0beta2

21 March 2009, 15:54 UTC

Henry Doorly Zoo

20 March 2009, 23:42 UTC

Emergent Blog, now with 100% more CNC

19 March 2009, 18:30 UTC

All the florida photos

19 March 2009, 2:36 UTC

Florida Birds

17 March 2009, 16:19 UTC

Show recent e-mail in screen title bar or status bar

13 March 2009, 1:33 UTC

Facepalm of the day

9 March 2009, 23:04 UTC

Ingredients Fail

1 March 2009, 19:47 UTC

Ingrid's Florida Trip Photos

1 March 2009, 2:54 UTC

Florida: Mostly Orchids

28 February 2009, 21:40 UTC

Florida: Animals

28 February 2009, 4:13 UTC

Florida: Non-Orchid Plants

24 February 2009, 23:09 UTC

cropgui: A Linux GUI for Lossless JPEG Cropping

20 February 2009, 22:04 UTC

Florida: Bugs and Spiders edition

20 February 2009, 1:25 UTC

Florida: Fruit and Spice Park, and Everglades

14 February 2009, 16:24 UTC

Canon Digital Rebel XSi (450D) on Linux Ubuntu Hardy 8.04

2 February 2009, 21:32 UTC

Testing spindle-synced motion

31 January 2009, 16:29 UTC

Red Alert Box

5 January 2009, 23:26 UTC

Smart gnumakefiles are smart

20 December 2008, 19:21 UTC

Userspace driver for resistive "pen tablet" of XO-1 laptop

19 December 2008, 15:55 UTC

mouse wheel mpg

17 December 2008, 2:49 UTC

Current projects

17 December 2008, 2:45 UTC

RELEASED: emc 2.2.8

16 December 2008, 1:46 UTC

Macromedia "rip guard" marketing dreck

1 December 2008, 14:41 UTC

Media file hosting change

20 November 2008, 14:25 UTC

Happy 4th Birthday, AXIS

19 November 2008, 23:25 UTC

lurg and epic: the 1-2-5 progression extended to real numbers

17 November 2008, 15:16 UTC

XO-1 screen simulation

14 November 2008, 13:42 UTC

Domino Sweeper

12 November 2008, 2:27 UTC

RELEASED: emc 2.2.7

10 November 2008, 13:48 UTC

Double Precision checked in

4 November 2008, 0:23 UTC

You got Election in my Blog!

3 November 2008, 2:49 UTC

Still more doubles

1 November 2008, 14:21 UTC

Further double work

31 October 2008, 21:04 UTC

Doubles in HAL?

30 October 2008, 20:02 UTC

EMC2 on Ubuntu: Stick with Hardy Heron

30 October 2008, 16:33 UTC

EMC2 carves pumpkins

6 October 2008, 17:59 UTC

Colorado Vacation Photos

4 October 2008, 12:54 UTC

Autoreprogram for DFU devices

4 October 2008, 3:05 UTC

at90usb162 gotcha: PC0 vs XTAL2

20 September 2008, 21:58 UTC

New screws and nuts for the zenbot

14 September 2008, 2:10 UTC

Copper-clad dragon

5 September 2008, 14:43 UTC

More macro photos

2 September 2008, 2:18 UTC

Xilprg: Zoltan Csizmadia's xilinx jtag programmer

1 September 2008, 1:26 UTC

Milled Circuit Board Macro Photographs

29 August 2008, 0:49 UTC

Two-element capacitative touch sensor

26 August 2008, 1:46 UTC

Zenbot: more success milling circuit boards

21 August 2008, 23:48 UTC

High speed transfers for sump.org logic analyzer

16 August 2008, 22:53 UTC

Zenbot with Wolfgang Engineering "TB" Spindle

15 August 2008, 2:59 UTC

Cairo-based waveform demo

13 August 2008, 13:01 UTC

Marking anchors in HTML with a javascript bookmark

10 August 2008, 18:07 UTC

RELEASE: emc 2.2.6

8 August 2008, 11:26 UTC

Uptime bragging

6 August 2008, 1:29 UTC

Zenbot gets home switches

22 July 2008, 3:09 UTC

The sump.org digital logic analyzer

17 July 2008, 3:15 UTC

Zenbot Tool Length Sensor

4 July 2008, 16:49 UTC

Zenbot Lives

26 June 2008, 14:37 UTC

How to tunnel vmware over ssh

17 June 2008, 11:53 UTC

zeldaTp.patch: Nintendo stepped in (part 3 of 3, I guess)

10 June 2008, 18:10 UTC

zeldaTp.dat: complete corresponding source code (part 2 of ?)

9 June 2008, 22:29 UTC

zeldaTp.dat exploit analysis (part 1 of ?)

8 June 2008, 1:39 UTC

First crack at a wii dvd API

7 June 2008, 1:43 UTC

wiifuse + net

6 June 2008, 12:07 UTC

Call graph from powerpc elf file with debug symbols

5 June 2008, 14:47 UTC

axis-dropbox: Automatically open new or modified gcode files in axis

3 June 2008, 15:22 UTC

Wii Back

13 May 2008, 23:41 UTC

Oh no! My wii is broken

12 May 2008, 14:56 UTC

Experimental Ubuntu 8.04 + EMC2 Live CD

12 May 2008, 14:51 UTC

Release: EMC 2.2.5

8 May 2008, 3:12 UTC

hiff: hashing diff

8 May 2008, 2:28 UTC

Tyler Wong's Possibly Optimal Hangman Strategy

6 May 2008, 3:02 UTC

Bah, it's garbage

1 May 2008, 21:33 UTC

mailpie: updated to version 0.2

29 April 2008, 16:13 UTC

New Laptop

26 April 2008, 17:03 UTC

mailpie 0.1: full-text search of large e-mail archives

24 March 2008, 23:40 UTC

turd: Tape Usage of Real Disk

16 March 2008, 21:36 UTC

Release: EMC 2.2.4

28 January 2008, 3:42 UTC

Release: EMC 2.2.3

23 January 2008, 16:36 UTC

Math is hard (even for google)!

16 January 2008, 15:47 UTC

Generating HAL files from Eagle schematics

28 December 2007, 21:24 UTC

Collate this!

25 December 2007, 14:51 UTC

Improved Analog & Digital Interface with Arduino

24 December 2007, 19:46 UTC

Analog inputs with Arduino and EMC

21 December 2007, 21:28 UTC

As seen in hell....

21 December 2007, 14:54 UTC

EMC runs a real 5-axis machine

18 December 2007, 13:42 UTC

EMC 2.2.2 released

26 November 2007, 19:29 UTC

Making a YouTube video of X program

26 November 2007, 16:30 UTC

5-axis machining with emc

19 November 2007, 16:38 UTC

As seen on the internet

8 November 2007, 16:59 UTC

And the first new features start appearing in CVS...

8 November 2007, 16:40 UTC

EMC 2.2.1 released

5 November 2007, 18:39 UTC

EMC 2.2 released

7 October 2007, 13:20 UTC

l2h: A new converter from LyX to HTML (updated)

27 September 2007, 17:02 UTC

Gutsy Gibbon's "-rt" kernel

12 September 2007, 14:58 UTC

HAL: the trouble with doubles

11 September 2007, 2:37 UTC

Stepconf: Many Improvements

30 August 2007, 2:37 UTC

Second evening with the Zenbot

28 August 2007, 22:03 UTC

Zenbot Mini CNC Router

28 August 2007, 1:44 UTC

Bye Bye Gamefly

27 August 2007, 16:00 UTC

EMC 2.1.7 release

26 August 2007, 13:15 UTC

Doubling software step rates in emc2 (Update: Now in CVS TRUNK)

19 August 2007, 14:56 UTC

Custom USB input device with emc

6 August 2007, 13:34 UTC

Breezy Apt Repository / Deb Mirror

29 July 2007, 18:17 UTC

Stepconf: GUI to configure parport "step+direction" machines (updated)

26 July 2007, 16:23 UTC

gamefly: it's no netflix

24 July 2007, 11:20 UTC

pluto-step ran a mill

23 July 2007, 15:49 UTC

Montréal Botanical Garden

19 July 2007, 11:30 UTC

Canada Trip 2007

10 July 2007, 1:28 UTC

pincompare.py: compare pin assignments from two Quartus II .qsf files

8 July 2007, 2:41 UTC

pluto-step: it's not done but you can test it anyway

15 June 2007, 21:16 UTC

EMC2 does rigid tapping

13 June 2007, 3:14 UTC

CNC workshop 2007: threads from emc on servo lathe

13 June 2007, 3:14 UTC

EMC 2.1.6 released

11 June 2007, 2:05 UTC

Fest 2007

8 June 2007, 16:17 UTC

EMC2 on x86_64 with SMP (UPDATED)

31 May 2007, 1:01 UTC

emc2 on x86-64/rtai: that wasn't so hard! (Updated: It's in CVS)

30 May 2007, 10:55 UTC

Image-to-gcode improvements: roughing passes, cutting arcs

25 April 2007, 1:31 UTC

Europe 2007: First days

20 March 2007, 21:31 UTC

net2dot: convert HAL netlists into nice graphs

18 March 2007, 19:37 UTC

EMC 2.1.3 released

27 February 2007, 22:56 UTC

fuzzbuzz in terrible ways

26 February 2007, 3:16 UTC

EMC 2.1.1 released; Development version improvements

18 February 2007, 3:06 UTC

True biarcs

14 February 2007, 22:32 UTC

Easy tangent arcs, and biarc approximation of splines

5 February 2007, 16:39 UTC

Simulated SCARA Draws a Message

4 February 2007, 20:31 UTC

Machine visualization: jmk kicks my ass

29 January 2007, 2:24 UTC

EMC 2.1.0 released

25 January 2007, 1:47 UTC

gdepth example: virtual vs real

23 January 2007, 3:12 UTC

gdepth 0.2: a gcode "remaining material" previewer

4 January 2007, 13:41 UTC

qtdro on emc2

2 January 2007, 15:14 UTC

Pluto-Servo: A new option for hobbyist servo machines

2 January 2007, 14:36 UTC

PyVCP: A Virtual Control Panel that integrates with AXIS

29 December 2006, 19:15 UTC

jdi.py: Just Do It

28 December 2006, 14:19 UTC

Tcl as a g-code preprocessor

24 December 2006, 21:08 UTC

Pluto_Servo has landed

18 December 2006, 3:20 UTC

Pluto-Servo: EMC2 Servo Controller

6 December 2006, 19:36 UTC

Do not buy: PCI-8255

6 December 2006, 16:00 UTC

Acronym of the day: STEWD

4 December 2006, 2:39 UTC

Pluto_servo progress: It's running cradek's lathe!

2 December 2006, 17:43 UTC

More on the pluto-p (including FPGA pin numbers for the "JTAG" connector

24 November 2006, 22:46 UTC

Software Uploader for Pluto-P board

19 November 2006, 1:32 UTC

Updating Configuration Files for the development version of EMC2

17 November 2006, 16:00 UTC

Truth-table compiler for emc2

6 November 2006, 19:57 UTC

Start of a classicladder 0.7 port to emc's HAL

4 November 2006, 17:01 UTC

Mesh-To-Heightmap Generator

31 October 2006, 20:33 UTC

Gantry Kinematics

24 October 2006, 22:08 UTC

The future of axis.unpy.net

24 October 2006, 22:06 UTC

comp is now a part of emc2

23 October 2006, 18:15 UTC

The Bayer sensor vs the Foveon sensor (part 2 of 2)

23 October 2006, 2:16 UTC

The Bayer sensor vs the Foveon sensor (part 1 of 2)

9 September 2006, 14:27 UTC

Labor Day Macro Photos

5 September 2006, 12:12 UTC

comp 0.2: A tool to write HAL boilerplate

4 September 2006, 3:08 UTC

comp: A tool to write HAL boilerplate

31 August 2006, 19:52 UTC

Tired of missing OpenGL manpages on Ubuntu

28 August 2006, 12:08 UTC

image-to-gcode improvements

26 August 2006, 17:58 UTC

Image-to-gcode in CVS

26 August 2006, 0:48 UTC

The stupidest thing I saw today....

10 August 2006, 1:51 UTC

AXIS has become a part of EMC2

4 August 2006, 15:28 UTC

Writing HAL components with AXIS's 'hal' module: Feed Override Wheel

18 July 2006, 1:32 UTC

A few more features trickle in to CVS

16 July 2006, 16:05 UTC

Skencil output converter for emc2

28 June 2006, 18:28 UTC

Improving Lathe Support

11 June 2006, 17:32 UTC

Recipe: Farmers' Market

10 June 2006, 2:31 UTC

Where's my AXIS 1.3?

3 June 2006, 15:25 UTC

1MHz+ Quadrature Divider for attiny13

2 June 2006, 18:02 UTC

400kHz Triple quadrature divider for atmega8 and quadrature state table generator

31 May 2006, 16:57 UTC

Creating a Quadrature Divider: What Won't Work

22 May 2006, 13:13 UTC

Two-axis servo schematic and board

20 May 2006, 23:06 UTC

Post-Fest Post

14 May 2006, 17:08 UTC

Off to CNC-Workshop

9 May 2006, 14:02 UTC

Computers and minds

2 May 2006, 23:08 UTC

Whine!!!!!!!&exclam;

29 April 2006, 21:58 UTC

Onscreen Crosshairs in tcl/tk

24 April 2006, 2:42 UTC

AXIS 1.3a1 Release coming up

11 April 2006, 12:54 UTC

Paul Corner announces AXIS 1.2.1 packages for BDI4

9 April 2006, 13:47 UTC

Sandhill Cranes

17 March 2006, 13:57 UTC

G-Code Quick Reference

14 March 2006, 14:50 UTC

Parallel-port Two-axis PWM servo controller for Etch CNC

13 March 2006, 22:39 UTC

CVS Snapshots page fixed

7 March 2006, 3:33 UTC

ET-ARM Stamp

16 January 2006, 17:02 UTC

AXIS 1.2 Translations

13 January 2006, 5:02 UTC

Aether: getting rid of the extra URL component

12 January 2006, 17:21 UTC

African Violet flower macros

12 January 2006, 17:12 UTC

Odd Macro Flash Photo

12 January 2006, 0:39 UTC

More Flash Fun

3 January 2006, 15:25 UTC

Directions for AXIS 1.2

1 January 2006, 19:56 UTC

AXIS 1.1 released

26 December 2005, 15:58 UTC

Strobe Photography Roundup

24 December 2005, 3:14 UTC

More high-speed photography

23 December 2005, 14:19 UTC

First Interesting Strobe Photo

18 December 2005, 3:49 UTC

pam_ssh

17 December 2005, 15:53 UTC

SOIC-8 to DIP adapter board

12 December 2005, 19:20 UTC

emc1 HEAD supports AXIS again

12 December 2005, 0:41 UTC

Before AXIS 1.1

10 December 2005, 0:06 UTC

Reverse Engineering the Samsung ML-2010 laser printer

9 December 2005, 1:30 UTC

Netflix to Aether converter

1 December 2005, 2:10 UTC

Decyphering an assertion

29 November 2005, 23:48 UTC

AXIS bug tracker on sourceforge.net

29 November 2005, 23:45 UTC

Seeking contribution of patch to support emc1 HEAD

29 November 2005, 3:03 UTC

EMC2 works great

29 November 2005, 1:56 UTC

Better navigation

27 November 2005, 21:38 UTC

Stippler 1.0 source release

21 November 2005, 23:03 UTC

The best assertion ever

21 November 2005, 17:54 UTC

Hershey Vector Fonts

21 November 2005, 2:11 UTC

Dimensioning

20 November 2005, 18:31 UTC

AXIS development news

17 November 2005, 21:13 UTC

So I had a memory leak...

13 November 2005, 16:18 UTC

Shutting down Craie...

7 November 2005, 21:09 UTC

Updating AXIS on BDI 4.30

7 November 2005, 19:12 UTC

Two optical illusions

22 October 2005, 13:40 UTC

Linux on Compaq v2000-series laptop

15 October 2005, 19:11 UTC

4-axis half-stepping translator in AVR

11 October 2005, 20:05 UTC

AXIS 1.1rc2 release upcoming

10 October 2005, 2:49 UTC

AXIS gets linked

9 October 2005, 18:23 UTC

QOOP -- the final chapter?

3 October 2005, 23:28 UTC

Response from QOOP (updated with comparison images)

2 October 2005, 15:09 UTC

Shutting down bald...

1 October 2005, 16:54 UTC

Switch-over in progress

30 September 2005, 13:44 UTC

QOOP: My friends' reaction to one of their photo books

25 September 2005, 20:32 UTC

AXIS 1.1rc1 release

23 September 2005, 16:09 UTC

BDI 4.29: bugs fixed

20 September 2005, 3:08 UTC

Linux on iDEQ 220k

18 September 2005, 2:58 UTC

BDI bug affects AXIS?

13 September 2005, 23:24 UTC

Bugs in the front yard

11 September 2005, 18:15 UTC

glif: generate client-side gif files from javascript

9 September 2005, 14:56 UTC

Fuse-python 0.9 rereleased under LGPL

7 September 2005, 2:55 UTC

Flicker and QOOP

28 August 2005, 15:30 UTC

Doorley zoo

24 August 2005, 20:40 UTC

Photos from my recent trip to Canada

22 August 2005, 14:04 UTC

Paul C releases AXIS packages for BDI 4.20

19 August 2005, 2:23 UTC

Experimental version of AXIS for emc2 HEAD, bdi 4.x, and emc1/CRADEK_STABLE

14 August 2005, 14:11 UTC

Myth! Myth!

13 August 2005, 4:51 UTC

Canada dinner experience, links to photos

5 August 2005, 5:00 UTC

Fireworks Photography

14 July 2005, 13:57 UTC

Timestamp-based caching for filesystem-based dynamic websites

3 July 2005, 18:36 UTC

Aethertool 0.6 Released

29 June 2005, 2:41 UTC

So I got a netflix subscription...

24 June 2005, 1:29 UTC

Stross releases Singularity E-book

20 June 2005, 19:00 UTC

Advice on choosing a digital camera

17 June 2005, 19:13 UTC

New version of aethertool (formerly called commandline tools for Æther)

17 June 2005, 15:26 UTC

Controlling EMC with a joystick

16 June 2005, 23:11 UTC

Experimental version of AXIS for emc2 checked into CVS

16 June 2005, 0:20 UTC

Wikipedia-like floating thumbnails for Æther

14 June 2005, 21:14 UTC

Inter-entry links for Æther

14 June 2005, 3:22 UTC

Yet another EMC2 patch

13 June 2005, 18:48 UTC

Updated patch for EMC2

9 June 2005, 12:39 UTC

Phil Askey continues to impress us with his crypto savvy

6 June 2005, 23:09 UTC

Time for my first rant: Lexar readies "secure" CF card; Phil Askey laps it up

6 June 2005, 19:23 UTC

CVS snapshots and a patch for EMC2

5 June 2005, 2:30 UTC

a plug for Eagle3D

5 June 2005, 1:44 UTC

Comments for Æther

4 June 2005, 21:26 UTC

Swishing revisited

26 May 2005, 0:36 UTC

XY display update

25 May 2005, 23:56 UTC

Another day at the zoo

20 May 2005, 16:39 UTC

Aether commandline tools v2

16 May 2005, 13:36 UTC

Commandline tools for Æther

16 May 2005, 3:00 UTC

Æther with a real editor

9 May 2005, 1:58 UTC

vgaxy -- create XY scope displays with your VGA card

9 May 2005, 1:57 UTC

Vector patches for xmame 0.94

8 May 2005, 19:58 UTC

Photos from a trip to the zoo

7 May 2005, 19:32 UTC

More vector game screenshots

4 May 2005, 20:40 UTC

A photo outing on the Design Data campus

1 May 2005, 20:36 UTC

"Dithered" output increases resolution

1 May 2005, 18:16 UTC

MAME vector display on the oscilloscope

29 April 2005, 1:04 UTC

Working Z-axis

17 April 2005, 15:47 UTC

Vector "text" display

17 April 2005, 2:33 UTC

Animated XY display

16 April 2005, 16:53 UTC

VGA to 'scope display

13 April 2005, 2:30 UTC

The continuing laptop saga

8 April 2005, 1:35 UTC

speaking of busts...

3 April 2005, 20:19 UTC

Regulated LED flashlight -- update

31 March 2005, 2:55 UTC

Setting the NET_WM_ICON for Tkinter application windows

29 March 2005, 23:57 UTC

TI serial-interface DAC

28 March 2005, 13:50 UTC

mail2page.py for vmobl.com [updated 2005-04-21]

25 March 2005, 15:23 UTC

Regulated LED flashlight

24 March 2005, 15:44 UTC

Serendipitous optimization

19 March 2005, 17:55 UTC

Another constant-current circuit

18 March 2005, 17:05 UTC

Searching Aether with swish-e

9 March 2005, 3:37 UTC

Axis 1.0 FINAL source release

3 March 2005, 21:24 UTC

Upcoming 1.0 release

26 February 2005, 0:50 UTC

Plugging an old project

24 February 2005, 15:44 UTC

Much better results

23 February 2005, 3:03 UTC

It's in a frame!

22 February 2005, 13:57 UTC

Stippling with lots of points

21 February 2005, 17:13 UTC

Stippler with variable-sized dots

21 February 2005, 3:34 UTC

A patch to aether so that the sidebars are visible in IE

19 February 2005, 15:25 UTC

popen2(), a C function for bidirectional communication with a child process

18 February 2005, 15:01 UTC

Autocad R12 ADI documentation

17 February 2005, 3:37 UTC

Stippler: Turning photos into dots

16 January 2005, 22:34 UTC

AXIS, Etch CNC news

29 December 2004, 2:10 UTC

Introducing ETCH CNC

28 December 2004, 19:06 UTC

1.0b2 released

19 December 2004, 3:35 UTC

1.0b2 coming up

10 December 2004, 22:14 UTC

More progress toward 1.0

8 December 2004, 1:12 UTC

Progress toward 1.0

6 December 2004, 22:01 UTC

AXIS will be on BDI-4!

5 December 2004, 23:43 UTC

Beta status

4 December 2004, 22:15 UTC

AXIS 1.0b1 released

2 December 2004, 14:49 UTC

AXIS and EMC2

2 December 2004, 14:30 UTC

Working on those last changes before release...

30 November 2004, 14:45 UTC

Everything's coming together

29 November 2004, 1:26 UTC

Adding concept of per-entry author

25 November 2004, 19:43 UTC

What's the history of AXIS?

25 November 2004, 16:10 UTC

Building AXIS on a BDI system

25 November 2004, 15:52 UTC

AXIS Website Launched

25 October 2004, 18:24 UTC

First Thoughts about Aether

25 October 2004, 18:24 UTC