John Calhoun
@engineersneedart.com
Old Macintosh shareware author. Making things I wish existed when I was a kid.
engineersneedart.com
github.com/EngineersNeedArt
engineersneedart.com
github.com/EngineersNeedArt
I look back at the 3D-printing that I did in 2025, what I learned:
engineersneedart.com/blog/3dprint...
engineersneedart.com/blog/3dprint...
January 17, 2026 at 10:47 PM
I look back at the 3D-printing that I did in 2025, what I learned:
engineersneedart.com/blog/3dprint...
engineersneedart.com/blog/3dprint...
Wow, what Iceholes.
January 13, 2026 at 11:05 PM
Wow, what Iceholes.
Good for you—getting outside from time to time. :-)
January 13, 2026 at 12:09 PM
Good for you—getting outside from time to time. :-)
Thanks, Jeri. You're a badass.
January 13, 2026 at 12:08 PM
Thanks, Jeri. You're a badass.
Hell Done!, indeed.
January 12, 2026 at 5:37 PM
Hell Done!, indeed.
Are Mike's guitars (Ric) on the left? Peter's on the right?
January 9, 2026 at 6:59 PM
Are Mike's guitars (Ric) on the left? Peter's on the right?
Yeah, and it's not like they were paying anything reasonable in California taxes anyway. Not a big loss for CA tax revenue.
January 9, 2026 at 6:58 PM
Yeah, and it's not like they were paying anything reasonable in California taxes anyway. Not a big loss for CA tax revenue.
"…as some billionaires would rather flee the state than pay the tax."
You'll have to explain why that is bad for California. I suspect it will be a net-good.
You'll have to explain why that is bad for California. I suspect it will be a net-good.
January 9, 2026 at 6:52 PM
"…as some billionaires would rather flee the state than pay the tax."
You'll have to explain why that is bad for California. I suspect it will be a net-good.
You'll have to explain why that is bad for California. I suspect it will be a net-good.
And of course Tempest—where your "shooter" is always at the bottom of the display…
January 7, 2026 at 1:13 PM
And of course Tempest—where your "shooter" is always at the bottom of the display…
So many possibilities.
I would laugh at PacMan where you have to rotate the display to get the PacMan to fall "down". Probably as simple as mapping out your encoder into 4 quadrants and sending the current quadrant as a joystick input to the emulated game.
I would laugh at PacMan where you have to rotate the display to get the PacMan to fall "down". Probably as simple as mapping out your encoder into 4 quadrants and sending the current quadrant as a joystick input to the emulated game.
January 7, 2026 at 1:12 PM
So many possibilities.
I would laugh at PacMan where you have to rotate the display to get the PacMan to fall "down". Probably as simple as mapping out your encoder into 4 quadrants and sending the current quadrant as a joystick input to the emulated game.
I would laugh at PacMan where you have to rotate the display to get the PacMan to fall "down". Probably as simple as mapping out your encoder into 4 quadrants and sending the current quadrant as a joystick input to the emulated game.
In 2025 I finally got serious about creating a scale model of an experimental NASA lifting body—from balsa. So I got close to finishing it on this iteration…
#nasa #balsa #modelaircraft #liftingbody #alwaysbeiterating
engineersneedart.com/blog/m2f3202...
#nasa #balsa #modelaircraft #liftingbody #alwaysbeiterating
engineersneedart.com/blog/m2f3202...
Balsa M2-F3 Lifting Body
engineersneedart.com
January 2, 2026 at 12:04 AM
In 2025 I finally got serious about creating a scale model of an experimental NASA lifting body—from balsa. So I got close to finishing it on this iteration…
#nasa #balsa #modelaircraft #liftingbody #alwaysbeiterating
engineersneedart.com/blog/m2f3202...
#nasa #balsa #modelaircraft #liftingbody #alwaysbeiterating
engineersneedart.com/blog/m2f3202...
Thanks for taking one for the team. MTV was always "L.A. music". No thanks.
December 31, 2025 at 3:44 PM
Thanks for taking one for the team. MTV was always "L.A. music". No thanks.
Reposted by John Calhoun
31 December 1995. Still the perfect goodbye.
December 31, 2024 at 12:21 PM
31 December 1995. Still the perfect goodbye.
Thinking about the year that is ending…
I put together a small post about the balsa “2001: A Space Odyssey” model that I built in early 2025. I will probably try to do some write-ups of a few of the other projects I completed.
engineersneedart.com/blog/orion20...
#balsa
I put together a small post about the balsa “2001: A Space Odyssey” model that I built in early 2025. I will probably try to do some write-ups of a few of the other projects I completed.
engineersneedart.com/blog/orion20...
#balsa
Balsa “2001: A Space Odyssey” Model
engineersneedart.com
December 30, 2025 at 11:04 AM
Thinking about the year that is ending…
I put together a small post about the balsa “2001: A Space Odyssey” model that I built in early 2025. I will probably try to do some write-ups of a few of the other projects I completed.
engineersneedart.com/blog/orion20...
#balsa
I put together a small post about the balsa “2001: A Space Odyssey” model that I built in early 2025. I will probably try to do some write-ups of a few of the other projects I completed.
engineersneedart.com/blog/orion20...
#balsa
Or you could figure out how to prepare 4 different ribbons (Cyan, Magenta, Yellow and Black) and run paper through multiple passes.
(It's what I have do with my RISO printer, ha ha).
(It's what I have do with my RISO printer, ha ha).
December 28, 2025 at 4:09 PM
Or you could figure out how to prepare 4 different ribbons (Cyan, Magenta, Yellow and Black) and run paper through multiple passes.
(It's what I have do with my RISO printer, ha ha).
(It's what I have do with my RISO printer, ha ha).
Remember that one: "Tales From the Crypt"
December 26, 2025 at 2:55 AM
Remember that one: "Tales From the Crypt"
I hope they're not sipping mercury. (My first thought.)
December 23, 2025 at 12:07 AM
I hope they're not sipping mercury. (My first thought.)
"Happiest place on Earth" … I've been told.
December 16, 2025 at 6:55 PM
"Happiest place on Earth" … I've been told.
A power module for a breadboard analog computer. On left: prototype board, on right: 1st iteration from JLCPCB.
December 16, 2025 at 6:49 PM
A power module for a breadboard analog computer. On left: prototype board, on right: 1st iteration from JLCPCB.
Analog computer project in progress. Breadboard first. Circuits that are okay move to prototype boards…
Parts get harvested along the way. IC's are easy because they are socketed. (I can't be bothered to harvest sockets). Switches, large caps… (I have a bunch of crap resistors I'm happy to lose.)
Parts get harvested along the way. IC's are easy because they are socketed. (I can't be bothered to harvest sockets). Switches, large caps… (I have a bunch of crap resistors I'm happy to lose.)
December 11, 2025 at 11:47 PM
Analog computer project in progress. Breadboard first. Circuits that are okay move to prototype boards…
Parts get harvested along the way. IC's are easy because they are socketed. (I can't be bothered to harvest sockets). Switches, large caps… (I have a bunch of crap resistors I'm happy to lose.)
Parts get harvested along the way. IC's are easy because they are socketed. (I can't be bothered to harvest sockets). Switches, large caps… (I have a bunch of crap resistors I'm happy to lose.)