Search found 129 matches

by Rfairman
Sat Mar 28, 2020 6:13 pm
Forum: general
Topic: pi gpio bbc basic
Replies: 31
Views: 997

Re: pi gpio bbc basic

You can use control basic to produce a pwm signal to control linear and stepper motors I use a deltronics controlit buffer box to break out the parallel port and the user port Here is the code for stepper motor control I screen grabbed it from a 1980's BBC Micro programme https://stardot.org.uk/foru...
by Rfairman
Mon Mar 23, 2020 11:06 am
Forum: upcoming and recent events & exhibitions
Topic: ABug Scotland (working title) Meeting 4th April 2.00pm
Replies: 2
Views: 221

Re: ABug Scotland (working title) Meeting 4th April 2.00pm

The video conference is being used as an alternative to a first local meeting in Glasgow. Too big a video conference would be very difficult to manage If anyone local enough to Scotland who would consider attending future physical meetings please contact me via pm and i will include them in the face...
by Rfairman
Sun Mar 22, 2020 12:26 pm
Forum: upcoming and recent events & exhibitions
Topic: ABug Scotland (working title) Meeting 4th April 2.00pm
Replies: 2
Views: 221

ABug Scotland (working title) Meeting 4th April 2.00pm

We are holding our first meeting via Facebook messenger group video call at 2.00.pm Saturday 4th April
Regards

Richard Fairman
by Rfairman
Thu Mar 19, 2020 11:39 am
Forum: for sale / freebies
Topic: Retro 5 extension lead
Replies: 2
Views: 178

Re: Retro 5 extension lead

I have made connections to all the plugs without problems My equipment has out grown the number of connections on this unit

Regards

Richard
by Rfairman
Tue Mar 17, 2020 4:41 pm
Forum: for sale / freebies
Topic: Retro 5 extension lead
Replies: 2
Views: 178

Retro 5 extension lead

I have a 5 way retro extension /socket Not pat tested but works ok Has about 1mt lead with fused 3 pin plug

5.00 plus 4.50 p&p
IMG_1584453967955.jpg
by Rfairman
Tue Mar 17, 2020 10:31 am
Forum: upcoming and recent events & exhibitions
Topic: ABug question
Replies: 3
Views: 154

ABug question

I am organising a beeb / acorn user group for Scotland Is ABug an existing organisation or can any group use ths ABUG title. I have also seen the Association of ABug's do we need to join
Thanks

Regards

Richard
by Rfairman
Mon Mar 16, 2020 12:06 pm
Forum: archive issues
Topic: Archive Needed ?
Replies: 3
Views: 288

Archive Needed ?

i Have several utilities on disk are they worth archiving

Bigben disk copier Mamasoft

Debug A multidisk formatter

Bitcopy / Locksmith Protected disk copier Martin Hills

Hijack protected disc copier S Law Agresssive Software

regards

Richard
by Rfairman
Fri Feb 28, 2020 1:23 pm
Forum: wanted
Topic: Jessop Raph Control box and cables
Replies: 0
Views: 130

Jessop Raph Control box and cables

Looking for the above
for purchase, beg, borrow or short term loan

regards

richard
by Rfairman
Fri Feb 28, 2020 1:21 pm
Forum: software: other
Topic: Hacking Acornsoft Logo Extensiions
Replies: 1
Views: 225

Hacking Acornsoft Logo Extensiions

I know this is a naive question but how does one go about hacking the Jessop extension.
The jessop ralph turtle is normally controlled via the userport to a control box
I need the extension to output to the printer port via a Deltronics Control IT box for stepper motor control

regards

richard
by Rfairman
Thu Feb 27, 2020 4:43 pm
Forum: hardware
Topic: Robot arm - free for postage
Replies: 16
Views: 563

Re: Robot arm - free for postage

you could control it via deltroncs control it box It breaks out the user port and the parallel port I use one to control motors using control basic. You can control up to 4 dc motors fwd and reverse or two stepper motors It alreasy has the h chips and motor drivers. I sold one on here just a few day...
by Rfairman
Thu Feb 27, 2020 4:28 pm
Forum: software: other
Topic: Rom images Archive?
Replies: 8
Views: 311

Re: Rom omages Archive?

These are not ssd,s they are rom images on physical 80t discs I think they were produced by Romdump. Is there any easy way of checking version numbers or producing ssd,s from physical disks I have 6 disks full with about 100 rom images

Regards

Richard
by Rfairman
Thu Feb 27, 2020 3:26 pm
Forum: software: other
Topic: Mystery stat up screen
Replies: 2
Views: 129

Re: Mystery stat up screen

And the error screen
20200227_152119.jpg
by Rfairman
Thu Feb 27, 2020 3:25 pm
Forum: software: other
Topic: Mystery stat up screen
Replies: 2
Views: 129

Mystery stat up screen

I have mystery start up screen on several 80t discs when i Shift break boot Always ends in a error screen as below

Any info on this and has the utility to produce it been archived
20200227_152014.jpg
by Rfairman
Thu Feb 27, 2020 3:02 pm
Forum: software: other
Topic: Rom images Archive?
Replies: 8
Views: 311

Re: Rom omages Archive?

Final Roms
20200227_145113.jpg
20200227_145113.jpg
20200227_145105.jpg
by Rfairman
Thu Feb 27, 2020 2:59 pm
Forum: software: other
Topic: Rom images Archive?
Replies: 8
Views: 311

Re: Rom omages Archive?

More roms
20200227_145030.jpg
20200227_144952.jpg
20200227_145022.jpg
by Rfairman
Thu Feb 27, 2020 2:58 pm
Forum: software: other
Topic: Rom images Archive?
Replies: 8
Views: 311

Re: Rom omages Archive?

More roms
20200227_144834.jpg
20200227_144914.jpg
20200227_144923.jpg
by Rfairman
Thu Feb 27, 2020 2:56 pm
Forum: software: other
Topic: Rom images Archive?
Replies: 8
Views: 311

Rom images Archive?

I have. 6 80 tk discs full of rome images
Do any of these nerf adding to an archive or are they already therr
20200227_144753.jpg
20200227_144821.jpg
20200227_144730.jpg
by Rfairman
Thu Feb 27, 2020 1:21 pm
Forum: software: other
Topic: Looking for control software for BBC B
Replies: 1
Views: 254

Re: Looking for control software for BBC B

More info on control basic from the BBC Computer Literacy Project

https://clp.bbcrewind.co.uk/847a7a72eeb ... de91cb70b5

I screenshot the code to control a stepper motor
stepper.pdf
(170.55 KiB) Downloaded 5 times
by Rfairman
Wed Feb 26, 2020 9:28 pm
Forum: archive requests
Topic: Control basic 2.62n
Replies: 12
Views: 438

Re: Control basic 2.62n

Found a clip from the BBC Computer Literacy Project
Shows control basic being used to run a stepper motor
I have saved a screen shot showing the code

https://clp.bbcrewind.co.uk/847a7a72eeb ... de91cb70b5
stepper.pdf
(170.55 KiB) Downloaded 4 times
by Rfairman
Wed Feb 26, 2020 8:11 pm
Forum: hardware
Topic: Jessop Ralph Turtle
Replies: 5
Views: 737

Re: Jessop Ralph Turtle

Thanks for that I would love to clone the ralph control box.
I have the deltronics control box so should be able to read the user port outputs as logo writes to them

I'm assuming I can use led;s to do that.

Regards

Richard
by Rfairman
Tue Feb 25, 2020 9:41 pm
Forum: hardware
Topic: Jessop Ralph Turtle
Replies: 5
Views: 737

Re: Jessop Ralph Turtle

Hi do you have a copy of the software and manual for download
Did you ever get any further with cloning the controllers?

regards

Richard
by Rfairman
Sun Feb 23, 2020 9:30 pm
Forum: upcoming and recent events & exhibitions
Topic: BBC B meeting Glasgow
Replies: 13
Views: 355

Re: BBC B meeting Glasgow

sounds like a plan
how do i create a poll

I already have 4 expressions of interest from Facebook

thanks
by Rfairman
Sun Feb 23, 2020 7:15 pm
Forum: upcoming and recent events & exhibitions
Topic: BBC B meeting Glasgow
Replies: 13
Views: 355

Re: BBC B meeting Glasgow

thanks
by Rfairman
Sun Feb 23, 2020 5:21 pm
Forum: upcoming and recent events & exhibitions
Topic: BBC B meeting Glasgow
Replies: 13
Views: 355

Re: BBC B meeting Glasgow

I am getting some responses on some Facebook Groups So might set up a facebook message group so i can respond aall at once. Unless there is better way
Some are on face book some are on Startdot but not on both

regards

Richard
by Rfairman
Sun Feb 23, 2020 2:55 pm
Forum: upcoming and recent events & exhibitions
Topic: BBC B meeting Glasgow
Replies: 13
Views: 355

BBC B meeting Glasgow

I am trying to arrange an informal meeting In Glasgow perhaps in a curry house I live in Alexandria I mostly use a bbc b for trying to control robots using Logo or Acorn Logo I am hoping to get a BBC valiant Turtle, Jessop Turtle or a Trekker At the moment i am using a Deltronics Controll IT box to ...
by Rfairman
Thu Feb 20, 2020 11:56 am
Forum: hardware
Topic: Phobox Electronice User Port Expansion Box
Replies: 7
Views: 280

Phobox Electronice User Port Expansion Box

any info?
by Rfairman
Thu Feb 20, 2020 11:40 am
Forum: for sale / freebies
Topic: Deltronics Control IT Buffer box for BBC B with cables
Replies: 1
Views: 176

Deltronics Control IT Buffer box for BBC B with cables

Deltronics Control IT Buffer box for BBC B Fully working needs a kettle type mains plug ]Has data cables but parallel cable will need a BBC B type printer plug fitted Needs a new key but i will supply template so a new key can be made DIY I have software to use the box which i will supply as a 40 t...