Don Lancaster

tinaja.com · Personal blog · on HN since 2009

Don Lancaster's Guru's Lair is the site of an electronics author known for cookbooks, PostScript, and hydrogen energy writing.

What HN saysHN commenters remember him fondly after his death, praising his TTL and CMOS cookbooks as accessible, lasting technical writing, and his PostScript work.
39HN people shared it
35linked it in comments
12stories submitted
176story points
6 months agolast shared
2009people per year2026

Most-shared posts

  1. 1
    Don Lancaster's Guru's Lair Home Page
    7 people · 104 points · first shared 2015 · 45 comments on HN
  2. 2
    The Incredible Secret Money Machine
    7 people · 5 points · first shared 2013 · discussion on HN
  3. 3
    Tvtcb.pdf
    3 people · first shared 2023
  4. 4
    Casagpat.pdf
    3 people · first shared 2011
  5. 5
    Think of "using dollars" as "spending gasoline" [pdf]
    2 people · 9 points · first shared 2009 · 7 comments on HN
  6. 6
    Don Lancaster's Guru's Lair Hydrogen Resources Page
    2 people · 2 points · first shared 2022 · discussion on HN
  7. 7
    Magsn01.shtml
    2 people · first shared 2014
  8. 8
    Ebksamp1.shtml
    2 people · first shared 2020
  9. 9
    Santa01.shtml
    2 people · first shared 2021
  10. 10
    Patnt01
    2 people · first shared 2009
  11. 11
    Waywere.pdf
    2 people · first shared 2021
  12. 12
    Cvcb1.pdf
    2 people · first shared 2020
  13. 13
    Don Lancaster's “Guru's Lair” Archive
    1 people · 28 points · first shared 2020 · 8 comments on HN
  14. 14
  15. 15
    How to Bash Pseudoscience
    1 people · 3 points · first shared 2009 · 1 comments on HN

What HN people wrote when they linked it

squarefoot · 2023-07-01
RIP. His TTL and CMOS cookbooks have been of huge help in the late 80s and early 90s with no Internet available. They're still relevant today and highly recommended, especially for learning, since you can't teach the basics to a kid using an Arduino, although you can use it to simulate them later in software. His web page at [1] contains a lot of interesting stuff. Better mirror it before it vanishes. 1 - https://www.tinaja.com/
h2odragon · 2023-06-30
Worth looking at, if you have never done so: https://www.tinaja.com/ RIP. Thanks for the education, inspiration, and amusement, Mr. Lancaster.
rpaddock · 2023-06-29
Here is Don's web site. I always liked his insights to Postscript and his view on Hydrogen. https://www.tinaja.com
kevin_thibedeau · 2022-12-02
Don Lancaster's newsletters are all hand coded in PS with his own support routines. Poke around the site and you'll find links to the source along with their PDFs. https://www.tinaja.com/
8bitsrule · 2022-06-06
I always thought Don Lancaster's electronic "cookbook" series were top-notch examples of accessible, educational technical writing. Still kicking at 'Guru's Lair' https://www.tinaja.com/
joezydeco · 2021-06-09
The IIe, IIc, and IIgs had a means to track the vertical blank signal, but the original II did not. So a hack was discovered to let the 6502 see the video data being clocked out. It's described in great detail in Don Lancaster's book. https://www.tinaja.com/ebooks/enhance_vII.pdf The gist is that the last byte of each horizontal raster is not displayed on-screen, but with the hack the 6502 can see it. So if you set the low bit of the last byte to 1 for every horizontal line except the last one, now you know when the hardware has sent out the last byte of the last line. Vertical Blank comes right after that.
jpm_sd · 2021-03-03
Wow, a 90s internet classic. "Santa Claus machines" indeed. https://www.tinaja.com/santa01.shtml His "unauthorized autobiography" was an entertaining read. https://www.tinaja.com/glib/waywere.pdf
ananonymoususer · 2020-12-07
Great work! This reminds me of a book I read over 40 years ago: https://www.amazon.com/Cheap-Video-Cookbook-Donald-Lancaster/dp/067221… Apparently Don has made the above book available on his site: https://www.tinaja.com/ebooks/cvcb1.pdf
pasta · 2016-11-14
I think the book 'Incredible Secret Money Machine'[1] by Don Lancaster is one of the best startup books related to this. For example this strategy: 'strategy secret - have: 0.834 employees'. Of course this book might be the half truth, but imho it has a lot of value for startups. [1] http://www.tinaja.com/ebooks/ismm.pdf (10.4 MB)
giacomoharp · 2015-05-27
Oldie but goodie. A contrarian view of business from a prototypical hacker, Don Lancaster. I re-read this every few years to regain perspective. The Incredible Secret Money Machine http://www.tinaja.com/ebooks/ismm.pdf more of Don: http://tinaja.com/ -G
keenerd · 2014-08-22
Who cares about mass except NASA? H2 is terrible by volume, a liter of gasoline has more hydrogen in it than a liter of liquid H2 and the gasoline is a lot more safe. Some little PDFs about the hurdles of hydrogen from one of my favorite tech writers: http://www.tinaja.com/glib/resbn88.pdf http://www.tinaja.com/glib/energfun.pdf A hydrogen economy might be possible one day, but not until we find a natural H2 source that is as "free" as crude oil. Man made hydrogen will not work on a large scale. Electrolysis is one of the worst ways to make hydrogen, though it does have the highest "gee-whiz!" factor. If we did have unlimited hydrogen spewing out of the ground people would seriously consider first cracking the H2 into hydrocarbons to make it easier to transport.
georgedyer · 2013-03-12
maybe you want to check out this classic: http://www.tinaja.com/ebooks/ismm.pdf
oofoe · 2011-01-20
Required reading: http://www.tinaja.com/glib/casagpat.pdf More on this page: http://www.tinaja.com/patnt01.asp Yes, the web page colour scheme is /terrible/, but it may save you a great deal of time, trouble and perhaps your sanity. This resource might also be helpful: http://en.swpat.org/wiki/Software_patents_wiki:_home_page tl;dr: Small scale patenting is a mug's game.
DonHopkins · 2026-05-01
Don Lancaster passed away in 2023 at 83. https://en.wikipedia.org/wiki/Don_Lancaster Don Lancaster has died (gilaherald.com) https://gilaherald.com/obituary-for-don-lancaster/ HN discussion: https://news.ycombinator.com/item?id=36545595 Woody Baker was one of his biggest fans on comp.lang.postscript! https://news.ycombinator.com/item?id=36546584 DonHopkins on July 1, 2023 | parent | context | favorite | on: Don Lancaster has died I have always been a huge fan of Don Lancaster's wizardly writing about PostScript, who not only regularly published in Computer Shopper, but also generously ran a free PostScript help line at his own personal phone number. But Woody Baker was by far his biggest most enthusiastic fan of all (and highly eccentric in personality and coding style), and he would regularly extol and evangelize Don Lancaster's virtues and ideas on comp.lang.postscript. Once around March 4 1990, I gave Woody Baker some feedback on his comp.lang.postscript faq, including the suggesting that he might consider leaving Don Lancaster's personal phone number out of it, but he replied: >Again, I want to thank you for your contributions. You and D. Cortesi have been most helpful. The two of you gave me very in depth feedback. I have moved almost all the editorializing to the end. I have moved the style stuff to the end. As for DON LANCASTER, I left his phone number in. Don publishes it regularly in the computer shopper, as a free PostScript help line. He is…
k310 · 2025-09-08
We humans have an uncanny ability to reshape our lives to meet the demands of our intellectual and physical creations. Hence: obeying the needs of cell phones, cars, POS software, airplanes, pretty much everything. It's like asking a fish about water. Few of us do anything more creative than what you could do with Wordstar on CP/M, and many writers could barely fill a 250 meg disk drive. But we adapt! Now, I'm not knocking the genuine benefits of technology. Having missed my Mom at SFO long ago and having no way to contact her until she showed up at my place via a taxi, I love these gizmos. And there was no cell phone lot before cell phones. Compare the experience of being an individual, with unique knowledge, experience, neural "wiring" and emotions to observe, experience, interact with and contribute to society - with an amalgam of everyone's knowledge, experience, processing and emotions (as they can be expressed in worlds or art) I liken it to cat food. Cats may like chicken, liver and tuna, so some genius figured out "if they like the three, why not blend them so they can be happy at every meal?" I love to interact with my daughter and son-in-law, who are amazingly and wonderfully diverse! If I take landscape photos, they take underwater critter photos. If I cook Italian, they cook Indian. If and when I search the web, I am either looking for odd images that I can GIMP up for fun, or (being older now) when I get that "5 second lag" trying to remember some name…
kragen · 2024-11-08
I agree that 32-bit chips (and decent instruction sets) make everything much easier. You wouldn't necessarily have to interpret G-code on the 8-bit microcontroller itself, although it's about the same difficulty as interpreting BASIC on it. Keep in mind that keeping the motors of a 3-D printer busy only requires a few speed changes per second, maybe 10 at most. By contrast, the 8051 in an Epson MX-80 printed about 80 characters per second and had to actuate the 9 hammers in the print head with a new set of voltages 9 times per character, for a total of about 700 deadlines per second. When Don Lancaster was trying to figure out how to build 3-D printers and other "flutterwumpers" in the 01990s, his idea was to use a bigger computer to rasterize curves into a set of one-byte step commands that would be interpreted by an 8-bit microcontroller, for example in https://www.tinaja.com/glib/muse140.pdf, as I mentioned in https://news.ycombinator.com/item?id=42080682. His first explanation of this concept may have been his July 01993 "Hardware Hacker" column in Electronics Now (previously in Radio Electronics and Modern Electronics) https://www.tinaja.com/glib/hack66.pdf where he's exploring the possibilities opened up by Parallax's BASIC Stamp: > One potential use for the BASIC Stamp is shown in figure four. I’ve been doing a lot of work with the stupendously great PostScript general purpose computer language. In fact, this is the only language I use for all of my electronic…
wglb · 2026-05-18
Regarding "that almost nobody on Earth fully understands anymore", I claim this is nonsense, and definitely not an obstacle. I've audited codebases in languages that I haven't programmed in. It is a matter of grasping a few basic concepts, like branch execution, branch destination, where data is stored, how it is communicated. Don Lancaster told us how to do this: https://www.tinaja.com/ebooks/enhance_vI.pdf.
nomel · 2025-02-25
The acoustic modem is back in style [1]! And, of course, same frequencies (DTMF) [2], too! DTMF has a special place in the phone signal chain (signal at these frequencies must be preserved, end to end, for dialing and menu selection), but I wonder if there's something more efficient, using the "full" voice spectrum, with the various vocoders [3] in mind? Although, it would be much crepier than hearing some tones. [1] Touch tone based data communication, 1979: https://www.tinaja.com/ebooks/tvtcb.pdf [2] touch tone frequency mapping: https://en.wikipedia.org/wiki/DTMF [3] optimized encoders/decoders for human speech: https://vocal.com/voip/voip-vocoders/
tn1 · 2024-10-05
I guess you could say this is the modern version of the TV Typewriter: https://www.tinaja.com/ebooks/tvtcb.pdf
PaulHoule · 2024-06-28
See also https://en.m.wikipedia.org/wiki/List_of_home_computers_by_video_hardwa… Note Don Lancaster's technique used for video in some computers https://www.tinaja.com/ebooks/cvcb1.pdf such as https://en.wikipedia.org/wiki/ZX80 In some strange sense this is like using a microcontroller to implement a CRTC except you're using the main CPU to do the work.
gadders · 2023-07-04
Kevin Kelly recently published a link to "The Incredible Secret Money Machine" which is about making a sustainable (but not massive) living from your hobbies. Might be of interest to somebody: https://www.tinaja.com/ebooks/ismm.pdf
OldGuyInTheClub · 2023-07-01
The Cookbooks are available for free download from the site: https://www.tinaja.com/ebksamp1.shtml
relwin · 2022-11-29
Don Lancaster has been commenting on the absurdity of the hydrogen economy for over 20 years, saying hydrogen is a "pollution amplifier": https://www.tinaja.com/h2gas01.shtml
ChuckMcM · 2021-03-04
I still have it on my bookcase, and I was not remembering correctly, it has only TTL type logic devices! So now I need to figure out which was the 6502 book. Found it: https://www.tinaja.com/ebooks/socv1.pdf "Son of Cheap Video" :-)
FlyMoreRockets · 2021-03-03
I was a big fan of his flutterwumpers. His site tought me how to make a high torque, low precision stepper motor from a car alternator. https://www.tinaja.com/fwsamp1.shtml
dubya · 2020-03-01
I remember that pre-1990, PostScript seemed like a miracle. "Computer Shopper" of all things, used to have a PostScript Guru column with all kinds of interesting stuff. All the computer I had access to was an Atari ST with GFA Basic, so really only the math and ideas translated, but it really was like seeing the future. Path-clipping in particular was mind-blowing. It's partly archived online, and weirder than I remember! https://www.tinaja.com/glair01.shtml
fernly · 2020-01-18
Don Lancaster's TTL Cookbook and CMOS Cookbook would be good companions for the Ben Eater series. https://www.amazon.com/gp/product/0672210355/ref=dbs_a_def_rwt_bibl_vp… https://www.amazon.com/gp/product/0750699434/ref=dbs_a_def_rwt_bibl_vp… Actually both books are available from Lancaster's website as a free PDF: https://www.tinaja.com/ebksamp1.shtml
huuu · 2016-03-20
I always like the book The Incredible Secret Money Machine very much. The first rule for making money: never do it for the money. A free download is available: http://www.tinaja.com/ebooks/ismm.pdf
noonespecial · 2013-02-12
He had a lot of prescient advice about patents, way before they became the giant sucking nuisance that they are today. http://www.tinaja.com/pasamp1.shtml
kjhughes · 2013-02-12
Site seems to be down or overloaded. Here's the Google cache copy: http://webcache.googleusercontent.com/search?q=cache:http://kk.org/coo… And the direct link to the "Incredible Secret Money Making Machine" by Don Lancaster: http://www.tinaja.com/ebooks/ismm.pdf I'm considering whether this might be a good business read for middle/high schoolers.

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