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Re: It's long overdue - Cosmac Elf II build
Posted: 05 Apr 2026 11:29
by HigashiJun
rubber_jonnie wrote: 05 Apr 2026 11:15
The MK14 was never intended to have a case AFAIK, but it does have feet 😁
Still better than nothing...
Re: It's long overdue - Cosmac Elf II build
Posted: 05 Apr 2026 17:19
by rubber_jonnie
HigashiJun wrote: 05 Apr 2026 11:29
rubber_jonnie wrote: 05 Apr 2026 11:15
The MK14 was never intended to have a case AFAIK, but it does have feet 😁
Still better than nothing...
The C1MPF (OSI 600D+OSI 610) also has feet :)
I'll figure something out I'm sure.
Re: It's long overdue - Cosmac Elf II build
Posted: 06 Apr 2026 12:48
by rubber_jonnie
Well the PCBs for the improved LED display and the CDP1861 replacement have been shipped and should be here in a week :)
Annoyingly none of the stuff I ordered before easter has arrived, so everything is on hold Cosmac wise, though my Atom colour board did arrive on Saturday so I'll have a look through the BoM for that and see what parts I have for it in my spares drawers.
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Apr 2026 20:09
by rubber_jonnie
More stuff arrived today:
IMG20260408194331.jpg
Namely the enhanced LED board and the CDP1861 replacement, both here 5 days earlier than shipping predicted :)
Re: It's long overdue - Cosmac Elf II build
Posted: 08 Apr 2026 20:10
by stephen_usher
Yay! :-)
Re: It's long overdue - Cosmac Elf II build
Posted: 09 Apr 2026 11:42
by rubber_jonnie
OK, so everything is ordered for the CDP1861 replacement, though I have had to go to AliExpress for some parts as the prices for shipping for small items from the likes of Digi-Key, Farnell, RS and the like are really excessive.
I still need some parts for the add on large display, but I had six gorgeous TIL311 displays arrive today:
IMG20260409113606.jpg
Which should look great when all hooked up.
Re: It's long overdue - Cosmac Elf II build
Posted: 09 Apr 2026 12:49
by rubber_jonnie
The whole thing looks very nice :)
IMG20260409124736.jpg
You get a 4 digit memory location display and a 2 digit memory contents display.
Re: It's long overdue - Cosmac Elf II build
Posted: 10 Apr 2026 13:23
by rubber_jonnie
Well I've been finding it difficult to get hold of 16 pin dip resistor packs at 120R, so I made my own:
IMG20260410131821.jpg
Just got to build the 2nd and I can see if we get anything on the original 2 digit display.
Re: It's long overdue - Cosmac Elf II build
Posted: 10 Apr 2026 14:00
by rubber_jonnie
And the display runs :)
IMG20260410133929.jpg
:girldance:
I also get 00 sometimes, but I am still waiting on one of the ICs that control the keyboard so can't go any further just now.
The resistor banks are just there to control LED brightness it seems.
Re: It's long overdue - Cosmac Elf II build
Posted: 10 Apr 2026 16:20
by stephen_usher
Yay!!!