More attic finds . . . Updated :o)

peddle your acorn wares here!
Forum rules
You're welcome to trade Acorn-related stuff with other forum members here - the rule of thumb to follow when trading, is that items or services offered should be of interest to our Acorn community. Do NOT use multiple accounts - please trade with your regular (and only) forum account. If you're giving items away, please make it clear if you would be unhappy with the recipient selling on some or all of the items. Similarly, please ensure that the giver is comfortable with you re-selling items you have accepted as a gift. We cannot be held responsible for what happens in these trading forums or for deals done via PM. This must be done at your own risk. If you aren't comfortable with this - make the trade via an alternative site which can apply safeguards of their own. Be sensible - if someone approaches you to trade via PM who is not posting in the public forums, this may be a sign that they are not entirely what they seem. Please report it to the moderators if you receive an unsolicited message from anyone suspicious, so that it can be investigated and hopefully stop anyone being taken advantage of. This forum is not for advertising items you have for sale on ebay or other third party marketplaces.
User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

More attic finds . . . Updated :o)

Post by daveejhitchins » Sun Sep 08, 2019 3:43 pm

If of any interest to anyone I have (quite) a few of the following:
00C04F04-08BC-485C-A029-28FF4A2601D6.jpeg
72 pin memory sockets
3B8A1609-020A-46FD-ADC2-D5894056BECF.jpeg
969C4AD6-9D27-4236-A815-36B1360020E5.jpeg
B708333F-5DB2-42BB-9EF8-3D73C6BDF1A2.jpeg
A23D58F9-9789-4175-9D72-FD2CADEA2B00.jpeg
A36CB514-2A12-4628-85CB-CB83C0E0CFF2.jpeg
These PS/2 sockets are now taken.
60C83DD9-0B96-4E6D-959A-D34A3015421F.jpeg

And this (it’s heavy!!) 230V in - 10V @ 30A output
480A8678-8B88-4D87-8D74-52D26254042B.jpeg
D84E358C-0A7C-4F8E-8F7A-A39F74884E36.jpeg

Dave H :D
Last edited by daveejhitchins on Fri Sep 13, 2019 9:12 am, edited 2 times in total.
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
IanS
Posts: 1019
Joined: Mon Aug 31, 2009 6:02 pm
Contact:

Re: More attic finds . . .

Post by IanS » Sun Sep 08, 2019 4:39 pm

daveejhitchins wrote:
Sun Sep 08, 2019 3:43 pm
If of any interest to anyone I have (quite) a few of the following:
Interested in some of the PS/2 sockets - download/file.php?id=49310&mode=view

How many have you got, how much do you want for them?

Corum
Posts: 18
Joined: Sun Sep 16, 2018 5:43 pm
Contact:

Re: More attic finds . . .

Post by Corum » Sun Sep 08, 2019 5:38 pm

I might be interested in the 72 pin memory sockets.
How many do you have and how much do you want for them?

thx

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . .

Post by daveejhitchins » Sun Sep 08, 2019 7:51 pm

Ian, corum . . .

Let me count-up, tomorrow, and I’ll let you both know.

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . .

Post by daveejhitchins » Tue Sep 10, 2019 12:53 pm

A bit late, as usual . . .

I have 3 x trays of 40 plus a tray with 18 - so a total of 138.

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
IanS
Posts: 1019
Joined: Mon Aug 31, 2009 6:02 pm
Contact:

Re: More attic finds . . .

Post by IanS » Tue Sep 10, 2019 1:01 pm

daveejhitchins wrote:
Tue Sep 10, 2019 12:53 pm
I have 3 x trays of 40 plus a tray with 18 - so a total of 138.
Could you clarify which item you have 138. PS/2 sockets, or SIMM sockets?

And the cost of each item/tray. Thanks.
Last edited by IanS on Tue Sep 10, 2019 1:02 pm, edited 1 time in total.

User avatar
marcusjambler
Posts: 670
Joined: Mon May 22, 2017 11:20 am
Location: Bradford
Contact:

Re: More attic finds . . .

Post by marcusjambler » Tue Sep 10, 2019 2:13 pm

Hi Dave

Is that IDC a Beeb pcb user port connector?

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . .

Post by 1024MAK » Tue Sep 10, 2019 3:49 pm

Never mind an attic, at this rate I’m thinking Dave’s got an entire warehouse up there :lol:

Mark

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . .

Post by 1024MAK » Tue Sep 10, 2019 3:51 pm

marcusjambler wrote:
Tue Sep 10, 2019 2:13 pm
Hi Dave

Is that IDC a Beeb pcb user port connector?
The one with ears looks like a 20 way, so yes, it’s the correct size for a User Port.

Mark

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . .

Post by 1024MAK » Tue Sep 10, 2019 3:53 pm

I’m still wondering what on earth I can use 30A at 10V AC for.... :lol:

Mark

User avatar
BeebMaster
Posts: 2875
Joined: Sun Aug 02, 2009 4:59 pm
Location: Lost in the BeebVault!
Contact:

Re: More attic finds . . .

Post by BeebMaster » Tue Sep 10, 2019 4:13 pm

Sounds like just what I need to power my DEC RZ55E!
Image

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . .

Post by daveejhitchins » Tue Sep 10, 2019 5:30 pm

IanS wrote:
Tue Sep 10, 2019 1:01 pm
daveejhitchins wrote:
Tue Sep 10, 2019 12:53 pm
I have 3 x trays of 40 plus a tray with 18 - so a total of 138.
Could you clarify which item you have 138. PS/2 sockets, or SIMM sockets?

And the cost of each item/tray. Thanks.
Ian . . .

138 94 80 SIMM sockets and 25 0 PS/2 sockets - all at £0.50 plus P&P at cost, if that's acceptable?

Dave H :D
Last edited by daveejhitchins on Thu Sep 12, 2019 4:57 am, edited 2 times in total.
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
flaxcottage
Posts: 3728
Joined: Thu Dec 13, 2012 8:46 pm
Location: Derbyshire
Contact:

Re: More attic finds . . .

Post by flaxcottage » Tue Sep 10, 2019 8:46 pm

1024MAK wrote:
Tue Sep 10, 2019 3:53 pm
I’m still wondering what on earth I can use 30A at 10V AC for.... :lol:

Mark
Home made spot welder. :lol:
- John

Image

User avatar
Wheel_nut
Posts: 93
Joined: Wed May 01, 2019 12:46 pm
Location: West of Scotland
Contact:

Re: More attic finds . . .

Post by Wheel_nut » Wed Sep 11, 2019 2:36 pm

1024MAK wrote:
Tue Sep 10, 2019 3:53 pm
I’m still wondering what on earth I can use 30A at 10V AC for.... :lol:

Mark
Perfect for a Car Battery Charger. !0V ac rectified - 10 x 1.414 = 14.14V dc. That should charge a Car Battery in a couple of hours. :D
#1 BBC Model B Level 3 (upgraded from Model A) + 1770 DFS + Dual Floppy
#2 BBC Model B Level 7 + 1770 DFS + Dual TEAC Floppy
#3 BBC Model B Level 3 + 8271 DFS + Watford Dual Floppy
#4 BBC Model B Level 7 + 8271 DFS + Viglen Single Floppy

User avatar
roland
Posts: 3395
Joined: Thu Aug 29, 2013 8:29 pm
Location: Born (NL)
Contact:

Re: More attic finds . . .

Post by roland » Wed Sep 11, 2019 3:54 pm

1024MAK wrote:
Tue Sep 10, 2019 3:53 pm
I’m still wondering what on earth I can use 30A at 10V AC for....
Power an Atom that has all 2114’s installed :mrgreen:
256K + 6502 Inside
MAN WOMAN :shock:

Diminished
Posts: 183
Joined: Fri Dec 08, 2017 9:47 pm
Contact:

Re: More attic finds . . .

Post by Diminished » Wed Sep 11, 2019 10:30 pm

1024MAK wrote:
Tue Sep 10, 2019 3:53 pm
I’m still wondering what on earth I can use 30A at 10V AC for.... :lol:

Mark
Pass it through a wide diameter coil of wire and wipe floppy discs with it.

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 13, 2019 9:16 am

Four books that I’ve not used in years - free
1A02163A-13C0-439B-9792-16A067E50817.jpeg
Taken.
1BF1B5D7-E881-447F-8D51-B5F4258D8B16.jpeg
C874973B-4C49-4233-9786-140B74328282.jpeg
E381C371-D98F-4EC1-BD7F-2A5A46B01BD2.jpeg

Dave H :D
Last edited by daveejhitchins on Sat Sep 21, 2019 6:18 am, edited 1 time in total.
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 13, 2019 9:29 am

And . . . In its original box! Rescued from a local chemist shop. Slight burn on the screen and NOT tested!!

Now taken . . .

4915B296-2E5A-4514-8CC7-5404F3CAE4E0.jpeg
8753DD00-C271-4683-A287-CA05939EE341.jpeg
158633CF-9C38-4CB4-967D-E138EC786437.jpeg
Dave H :D
Last edited by daveejhitchins on Fri Sep 13, 2019 12:44 pm, edited 1 time in total.
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
jgharston
Posts: 3696
Joined: Thu Sep 24, 2009 11:22 am
Location: Whitby/Sheffield
Contact:

Re: More attic finds . . .

Post by jgharston » Fri Sep 13, 2019 10:28 am

Wheel_nut wrote:
Wed Sep 11, 2019 2:36 pm
Perfect for a Car Battery Charger. !0V ac rectified - 10 x 1.414 = 14.14V dc. That should charge a Car Battery in a couple of hours. :D
Surely it's x 1/root(2) not x root(2), it has to be less than the peak as you're filling in the troughs by chopping off the peaks. So 10VAC = 7V DC.

Code: Select all

$ bbcbasic
PDP11 BBC BASIC IV Version 0.25
(C) Copyright J.G.Harston 1989,2005-2015
>_

User avatar
Wheel_nut
Posts: 93
Joined: Wed May 01, 2019 12:46 pm
Location: West of Scotland
Contact:

Re: More attic finds . . .

Post by Wheel_nut » Fri Sep 13, 2019 10:39 am

jgharston wrote:
Fri Sep 13, 2019 10:28 am
Wheel_nut wrote:
Wed Sep 11, 2019 2:36 pm
Perfect for a Car Battery Charger. !0V ac rectified - 10 x 1.414 = 14.14V dc. That should charge a Car Battery in a couple of hours. :D
Surely it's x 1/root(2) not x root(2), it has to be less than the peak as you're filling in the troughs by chopping off the peaks. So 10VAC = 7V DC.
No it's x Root 2 because the barrery will charge to the PEAK voltage of the rectified waveform, not the Average. It is usual to have a Reservoir and smoothing Capacitor on the rectified output but not necessary if charging a Lead Acid Battery.
Last edited by Wheel_nut on Fri Sep 13, 2019 10:45 am, edited 1 time in total.
#1 BBC Model B Level 3 (upgraded from Model A) + 1770 DFS + Dual Floppy
#2 BBC Model B Level 7 + 1770 DFS + Dual TEAC Floppy
#3 BBC Model B Level 3 + 8271 DFS + Watford Dual Floppy
#4 BBC Model B Level 7 + 8271 DFS + Viglen Single Floppy

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 13, 2019 10:56 am

Brand new and unused (as far as I know*) ICS hard drive upgrade still in its original shipping box. No instructions, however, I think I have a pdf I can print out.

This would have been for pre A3000 machines.

Now Taken

* I opened the interface - it’s all there including LED and blue-tac for LED fixing.

£50 plus P&P at cost.
986FD4CA-3AA8-4965-B175-C363F8F05523.jpeg
6BDCA842-E53B-4B72-BA1A-38BA025D7A39.jpeg

Dave H :D
Last edited by daveejhitchins on Sat Sep 21, 2019 6:21 am, edited 1 time in total.
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . .

Post by 1024MAK » Fri Sep 13, 2019 11:44 am

Wheel_nut wrote:
Fri Sep 13, 2019 10:39 am
jgharston wrote:
Fri Sep 13, 2019 10:28 am
Wheel_nut wrote:
Wed Sep 11, 2019 2:36 pm
Perfect for a Car Battery Charger. !0V ac rectified - 10 x 1.414 = 14.14V dc. That should charge a Car Battery in a couple of hours. :D
Surely it's x 1/root(2) not x root(2), it has to be less than the peak as you're filling in the troughs by chopping off the peaks. So 10VAC = 7V DC.
No it's x Root 2 because the barrery will charge to the PEAK voltage of the rectified waveform, not the Average. It is usual to have a Reservoir and smoothing Capacitor on the rectified output but not necessary if charging a Lead Acid Battery.
Keep in mind that while the battery is drawing (charging) any significant current, you also have to take account of the forward voltage of the rectifier diodes. So until near the end of the charge, the voltage across the battery may be as low as 12.1V or so.

Mark

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . . Updated :o)

Post by 1024MAK » Fri Sep 13, 2019 12:03 pm

Hi Dave

I’m interested in the 9” video monitor.
Would it be possible to bring it along to Cambridge?

Mark
Last edited by 1024MAK on Fri Sep 13, 2019 12:11 pm, edited 1 time in total.

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 13, 2019 12:43 pm

1024MAK wrote:
Fri Sep 13, 2019 12:03 pm
Hi Dave

I’m interested in the 9” video monitor.
Would it be possible to bring it along to Cambridge?

Mark
Will do Mark . . .

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
Elminster
Posts: 3925
Joined: Wed Jun 20, 2012 8:09 am
Location: Essex, UK
Contact:

Re: More attic finds . . . Updated :o)

Post by Elminster » Fri Sep 13, 2019 12:58 pm

Dave will have a Caravan full at this rate.

User avatar
flaxcottage
Posts: 3728
Joined: Thu Dec 13, 2012 8:46 pm
Location: Derbyshire
Contact:

Re: More attic finds . . .

Post by flaxcottage » Fri Sep 13, 2019 1:11 pm

1024MAK wrote:
Fri Sep 13, 2019 11:44 am
Wheel_nut wrote:
Fri Sep 13, 2019 10:39 am
jgharston wrote:
Fri Sep 13, 2019 10:28 am

Surely it's x 1/root(2) not x root(2), it has to be less than the peak as you're filling in the troughs by chopping off the peaks. So 10VAC = 7V DC.
No it's x Root 2 because the barrery will charge to the PEAK voltage of the rectified waveform, not the Average. It is usual to have a Reservoir and smoothing Capacitor on the rectified output but not necessary if charging a Lead Acid Battery.
Keep in mind that while the battery is drawing (charging) any significant current, you also have to take account of the forward voltage of the rectifier diodes. So until near the end of the charge, the voltage across the battery may be as low as 12.1V or so.

Mark
Use 1/2 wave rectification and a massive Germanium diode. Only 0.2v forward drop there and a 30A reserve. Could be OK. :lol:
- John

Image

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 13, 2019 1:22 pm

And more . . .

Does anyone still use Drafting film? I have a part roll* of 75micron by about 3ft wide.

* I used this to plot my early PCBs.

P&P for this as it’s in a cardboard tube.

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

User avatar
1024MAK
Posts: 9236
Joined: Mon Apr 18, 2011 4:46 pm
Location: Looking forward to summer in Somerset, UK...
Contact:

Re: More attic finds . . . Updated :o)

Post by 1024MAK » Fri Sep 20, 2019 3:18 am

Hi Dave

Looking back through this thread, I spot that I may have a use for the edge-connector socket.
Image
Image

How many do you have?
If you have more than one, I would like two or three.

Late notice, I know, but would it be possible to bring it/them along to Cambridge?

Mark

User avatar
CMcDougall
Posts: 6796
Joined: Wed Feb 02, 2005 3:13 pm
Location: Shadow in a Valley of Scotland
Contact:

Re: More attic finds . . . Updated :o)

Post by CMcDougall » Fri Sep 20, 2019 7:21 pm

evening Dave,
is the Psion Organiser2 manual for the whole machine or just the RS232 link part.
I have one but it's needing it's chips re-programmed, plus I ain't got a clue about it :?
viewtopic.php?f=45&t=17450#p241807
/\ seems it's set up for Kilostream gFast broadband :lol:
so would be interested in the manual if it sheds some light.

Have fun at aBug! 8) Col.
ImageImageImage

User avatar
daveejhitchins
Posts: 5114
Joined: Wed Jun 13, 2012 5:23 pm
Location: Newton Aycliffe, County Durham
Contact:

Re: More attic finds . . . Updated :o)

Post by daveejhitchins » Fri Sep 20, 2019 9:30 pm

CMcDougall wrote:
Fri Sep 20, 2019 7:21 pm
evening Dave,
is the Psion Organiser2 manual for the whole machine or just the RS232 link part.
I have one but it's needing it's chips re-programmed, plus I ain't got a clue about it :?
viewtopic.php?f=45&t=17450#p241807
/\ seems it's set up for Kilostream gFast broadband :lol:
so would be interested in the manual if it sheds some light.

Have fun at aBug! 8) Col.
Col . . . Someone bagged that, however, he thought it had the hardware (which I haven't found, as yet!) so it may still be available. I'll let you know.

Dave H :D
Parts: UM6502CE, GAL22V10D, GAL16V8D, AS6C62256A, TC514400AZ, WD1772, R6522, TMS27C512, AT28C256
Products: ARA II, ARA III, ABR, ATI, AP6, MGC, AP5 . . .
For a price list, contact me at: Retro Hardware AT dave ej hitchins DOT plus DOT com

Post Reply