Search found 159 matches

by scruss
Tue Mar 05, 2019 3:39 am
Forum: general
Topic: Aldi - 3D Printer £250
Replies: 12
Views: 953

Re: Aldi - 3D Printer £250

But after a bit of fiddling, it seems dropping the temperature down to 195C and sticking to a .2mm layer height has done the trick. Different PLA filaments print best at temperatures found through trial and error. For the PLA+ that I use, it's almost always 205 °C - except for clear PLA+, which is ...
by scruss
Sun Mar 03, 2019 2:05 am
Forum: general
Topic: Aldi - 3D Printer £250
Replies: 12
Views: 953

Re: Aldi - 3D Printer £250

Cura has a canned profile for the i3. It has always produced the best prints for me. Just keep it in Recommended mode, set the layer height, select Support if there are overhangs in the model, and hit Prepare. Really, there's not much need to fiddle with anything else. Use good filament and keep it...
by scruss
Sat Mar 02, 2019 4:58 pm
Forum: off-topic
Topic: Modular CAD for model buildings?
Replies: 6
Views: 511

Re: Modular CAD for model buildings?

True, but it's more to do with DXF being possibly the worst-defined format on the planet. There are competing open-source libraries for handling it - all of which are barely interoperable - there's an "open" consortium that's very much closed and used to be very good at suing its users. So when I se...
by scruss
Fri Mar 01, 2019 6:26 pm
Forum: off-topic
Topic: Modular CAD for model buildings?
Replies: 6
Views: 511

Re: Modular CAD for model buildings?

Both FreeCAD and Blender have papercraft modules. Do you have a link for the respective add-ons ? :D I've only seen them in passing. Neither of them are my jam, so I haven't dug deeper. I did just find out about DXF2papercraft which seems much more clever than the last link I posted. It's a bit of ...
by scruss
Thu Feb 28, 2019 1:31 am
Forum: off-topic
Topic: Modular CAD for model buildings?
Replies: 6
Views: 511

Re: Modular CAD for model buildings?

You can export BlockCAD → LDraw, and from there any number of 3d formats

Unfortunately, the block data will include all the internal parts that you don't want. This makes rendering/unfolding hard.

Both FreeCAD and Blender have papercraft modules.
by scruss
Tue Feb 26, 2019 10:28 pm
Forum: general
Topic: Aldi - 3D Printer £250
Replies: 12
Views: 953

Re: Aldi - 3D Printer £250

The Creality Ender 3 Pro is cheaper and is a better printer too.

It's not a quiet printer, and it's one you'll have to spend a couple of hours building, but the Ender 3 is really solid.
by scruss
Tue Feb 26, 2019 3:09 am
Forum: off-topic
Topic: Software for Constructables (Model-making, pattern making etc.)
Replies: 5
Views: 513

Re: Software for Constructables (Model-making, pattern making etc.)

For Windows, there's Pepakura Designer.

Trammell Hudson's very odd unfold converts STL files (what 3d printers eat) to paper nets but it forms the net by choosing a random face. You'll likely have to run it many times before it generates useful output.
by scruss
Sun Feb 24, 2019 4:55 pm
Forum: off-topic
Topic: Software for Constructables (Model-making, pattern making etc.)
Replies: 5
Views: 513

Re: Software for Constructables (Model-making, pattern making etc.)

Very retro, but Brøderbund's The Toy Shop did this, for Apple II and C64.
by scruss
Mon Feb 11, 2019 4:43 am
Forum: software: other
Topic: BBC Micro: Speech Screen Reader with Lords of Time (Level 9)
Replies: 31
Views: 1742

Re: BBC Micro: Speech Screen Reader with Lords of Time (Level 9)

Nothing sounds like a Votrax. Nothing would want to, mind.

I think the person for whom my employer is named may have used an Echo II. There are pictures of him here using an early Morse sip & puff system on an Apple II: History - Neil Squire Society
by scruss
Sun Feb 10, 2019 10:10 pm
Forum: software: other
Topic: BBC Micro: Speech Screen Reader with Lords of Time (Level 9)
Replies: 31
Views: 1742

Re: BBC Micro: Speech Screen Reader with Lords of Time (Level 9)

No input, just that it's cool. And interfacing anything to a Votrax is horrid, can confirm

Turns out that one of the volunteers I work with on assistive tech projects developed the Echo II for the Apple II. We met last week at the ATIA conference in Florida.
by scruss
Sun Feb 10, 2019 10:02 pm
Forum: bbcmicro.co.uk
Topic: bbcmicro.co.uk - going beyond games?
Replies: 39
Views: 2808

Re: bbcmicro.co.uk - going beyond games?

… the great thing about a wiki is that it preserves all history - you can do a simple rollback, or you can examine individual edits to see what they did. You also have to learn all the innovative ways that folks will try to attack your installation. Because MediaWiki is such a valuable attack targe...
by scruss
Thu Feb 07, 2019 2:09 pm
Forum: hardware
Topic: Digital Tape Deck
Replies: 22
Views: 1518

Re: Digital Tape Deck

BTW, There is a mention of Acorn but not any links to actual equipment. That would be the TZXDuino . The original work of adding UEF support was described here . The hardware's as cheap as chips. The one with Acorn support doesn't record: it's playback only. The Tapuino for the C= machines does rec...
by scruss
Sat Jan 26, 2019 5:13 pm
Forum: programming
Topic: How do you edit your BASIC programs?
Replies: 53
Views: 3013

Re: How do you edit your BASIC programs?

emacs' BASIC mode. It sometimes makes a hames of the line number indentation, but it's easier than learning a new editor. It probably puts in extra spaces where it shouldn't. I still haven't got the hang of reading BASIC without spaces, and I'm not typically memory-constrained, so it's not a huge is...
by scruss
Tue Jan 22, 2019 12:13 am
Forum: general
Topic: "Outline specification for the BBC MICROCOMPUTER system"
Replies: 220
Views: 26006

Re: "Outline specification for the BBC MICROCOMPUTER system"

Yeah, I was wondering about that R.R., too …

I got it from someone who used to be a developer for the OU but now works in Canada. They'd gone back to the ancestral pile near Stockport and found a trove of old computer stuff. Not as momentous as the original spec you posted but all part of the history
by scruss
Mon Jan 21, 2019 9:05 pm
Forum: general
Topic: "Outline specification for the BBC MICROCOMPUTER system"
Replies: 220
Views: 26006

Re: "Outline specification for the BBC MICROCOMPUTER system"

Maybe not worthy of a new thread, but a friend found a copy of the 1982 “BBC Microcomputer System Technical Description”, which is now up on archive.org. Seems mostly be be a BBC BASIC language spec plus some physical/electronic details.
by scruss
Fri Jan 18, 2019 2:04 am
Forum: off-topic
Topic: MODE 7 … in Unicode
Replies: 3
Views: 617

MODE 7 … in Unicode

I see that a whole bunch of legacy characters have been accepted for a future version of Unicode, including the Teletext character set:
Proposal to add characters from legacy computers and teletext to the UCS
by scruss
Tue Jan 08, 2019 9:17 pm
Forum: off-topic
Topic: Xilinx lawyers
Replies: 15
Views: 987

Re: Xilinx lawyers

Both the USA and EU have fair use provisions. True enough. But BigEd put it quite succinctly: … The thing about IP is that everyone's got an opinion, and then there's the law as written, and then there's the outcomes of legal disputes, and then there's the chilling effect of getting a scary letter ...
by scruss
Mon Jan 07, 2019 8:12 pm
Forum: off-topic
Topic: Xilinx lawyers
Replies: 15
Views: 987

Re: Xilinx lawyers

Needed some background, but from the transcript … but basically, XILINX didn't like, that in the video what was created by this guy XILINX didn't like, that XILINX's and Altera's logo were placed together Without a ton more backup from the video maker, it seems like a trademark/IP issue. Companies a...
by scruss
Mon Jan 07, 2019 2:46 pm
Forum: programming
Topic: CRC Calculation
Replies: 11
Views: 849

Re: CRC Calculation

Digest::CRC does the right thing …
by scruss
Sun Jan 06, 2019 2:39 pm
Forum: programming
Topic: MINGW misery
Replies: 15
Views: 1070

Re: MINGW misery

*I take a screenshot, so need to paste it into a paint program so I can save it. Ok, look for a paint program, start butt.... where's the start button? that's the XY problem right there: a paint program is about screenshots how? Yes, I know that's how you had to do it since 3.1, but it doesn't make...
by scruss
Sat Jan 05, 2019 11:32 pm
Forum: off-topic
Topic: Solder/flux recommendations
Replies: 12
Views: 881

Re: Solder/flux recommendations

As for flux, I've never used liquid flux before, just had a tin of paste... How do you apply the liquid flux - brush or syringe? I use flux pens. They are like thick markers. No-clean flux just brushes off, though it doesn't leave the board looking pretty. Kester is the major flux brand. I use lead...
by scruss
Sun Dec 23, 2018 6:21 pm
Forum: hardware
Topic: Acorn Z80 manuals
Replies: 17
Views: 1206

Re: Acorn Z80 manuals

Okay, they're all uploaded now: Acorn CIS COBOL With ANIMATOR and FORMS-2 User Guide Acorn CP/M 2.2 with GSX Graphics Manual Z80 Professional BASIC User Guide Z80 BBC BASIC User Guide Acorn CIS COBOL Language Reference BBC Micro Z80 Second Processor User Guide Preparing the BBC Microcomputer for the...
by scruss
Sat Dec 22, 2018 3:07 pm
Forum: hardware
Topic: Acorn Z80 manuals
Replies: 17
Views: 1206

Re: Acorn Z80 manuals

got it, thanks!

can't commit to uploading immediately - xmas shopping and all - but I'll put 'em on Internet Archive individually very shortly. They should appear under here: https://archive.org/search.php?query=cr ... Limited%22
by scruss
Sat Dec 22, 2018 3:28 am
Forum: hardware
Topic: Acorn Z80 manuals
Replies: 17
Views: 1206

Re: Acorn Z80 manuals

I can put them on archive.org for everyone if you can get 'em to me. The archive handles a lot of file format convesion internally, so it should end up with a nice readable online book
by scruss
Fri Dec 21, 2018 1:20 pm
Forum: hardware
Topic: Acorn Z80 manuals
Replies: 17
Views: 1206

Re: Acorn Z80 manuals

jgharston wrote:
Fri Dec 21, 2018 7:33 am
I discovered I'd upload copies here: http://mdfs.net/Docs/Books/Z80CoPro/
Those, sadly, are corrupt — the PDFs are cut off in the first object stream, and the RTFs are incomplete.
by scruss
Fri Dec 21, 2018 1:13 pm
Forum: off-topic
Topic: 3D Printing
Replies: 11
Views: 1129

Re: 3D Printing

Am considering getting one of these for myself ... https://www.amazon.co.uk/Comgrow-Creality-Version-Megnetic-Certified/dp/B07GYXP9ZL Go for it. The Ender 3 is a great printer for the money. I haven't tried this newer magnetic bed version. There's definitely "some assembly required" with this print...
by scruss
Mon Dec 17, 2018 4:03 am
Forum: hardware
Topic: 6502 using TTL logic chips
Replies: 5
Views: 554

Re: 6502 using TTL logic chips

Yup. Particularly neat is the way it can also be a 65c02, 6510, 8502 and 65816.
by scruss
Sun Dec 16, 2018 6:31 pm
Forum: hardware
Topic: 6502 using TTL logic chips
Replies: 5
Views: 554

Re: 6502 using TTL logic chips

Yeah, I saw this (and Drass) the other weekend at World of Commodore. It's very neat, and quite small for a design that doesn't use a 74181 ALU.
by scruss
Sat Dec 15, 2018 4:34 am
Forum: off-topic
Topic: Scanning
Replies: 16
Views: 931

Re: Scanning

If you upload to archive.org — and you really should drop copies there for safe-keeping — they automatically carry out OCR. Failing that, tesseract joins images to multi-page PDF as it adds OCR data
by scruss
Thu Dec 13, 2018 2:55 am
Forum: acorn atom and system
Topic: Acorn System 1 emulator
Replies: 2
Views: 445

Re: Acorn System 1 emulator

Link's less likely to go dead than this site is. That's Mike Cowlishaw's site - IBM research fellow, creator of REXX, defender of decimal arithmetic - and is well archived