Search found 174 matches

by Rfairman
Mon Jul 13, 2020 12:31 pm
Forum: 8-bit acorn hardware
Topic: Jessop Turtle Schematics wanted?
Replies: 0
Views: 24

Jessop Turtle Schematics wanted?

Does anyone have schematic for Jessop Ralph Turtle on board electronics and/or interface board which attaches to userport. I have buzzed out the userport output codes but need schematics
by Rfairman
Sun Jul 12, 2020 3:20 pm
Forum: 8-bit acorn hardware
Topic: Line following huggy
Replies: 1
Views: 84

Line following huggy

Modded original BBC Buggy to line follow with DIY buggy.Not using barcode reader but an IR opto reflective module
https://m.facebook.com/groups/220458645 ... 4841061456
by Rfairman
Wed Jul 08, 2020 9:18 am
Forum: wanted
Topic: wanted BBC Buggy, Turtle or Robot Arm
Replies: 6
Views: 558

Valiant Turtle

Still looking for Valiant turtle with IR interface or a Jessops Ralph Turtle or even A Trekker Turtle
by Rfairman
Sat Jul 04, 2020 1:06 pm
Forum: 8-bit acorn hardware
Topic: Bbc buggy interface
Replies: 0
Views: 107

Bbc buggy interface

by Rfairman
Sun Jun 21, 2020 1:16 pm
Forum: 8-bit acorn hardware
Topic: Bbc buggy interface
Replies: 2
Views: 104

Re: Bbc buggy interface

Thank god for jumper wires. There are no onboard electronic but will need to a add NOPT LDR and the Barcode Reader if I can find a modern equivalent I'm using two microstepper modules (one per NEMA 17 stepper motor) And modded the original code Luckily the original code has a bit for a tilt switch t...
by Rfairman
Sun Jun 21, 2020 12:34 pm
Forum: 8-bit acorn hardware
Topic: Bbc buggy interface
Replies: 2
Views: 104

Bbc buggy interface

DIY Buggy now working with Kazzies clone interface board I assume buggy would also work with original interface board. Just take the pinouts from the buggy connector to microstepper modules with modded code. Im using a separate 12 v supply
20200621_122309.jpg
by Rfairman
Mon Jun 15, 2020 5:05 pm
Forum: 8-bit acorn hardware
Topic: BBC Buggy LDR
Replies: 1
Views: 150

BBC Buggy LDR

Looking for a modern equivalent of the BBC Buggy Light Dependent
Resistor.
The original has resistances of 250k ohms dark and 100 ohms under light.
Thanks
by Rfairman
Sun Jun 07, 2020 1:11 pm
Forum: 8-bit acorn hardware
Topic: Microstepping 2 stepper motors from userport
Replies: 2
Views: 134

Re: Microstepping 2 stepper motors from userport

Here is the original BBC Basic Buggy code modded to control a buggy with microsteppers. nema 17 motors via the user port. Ive only modded the Switch program so far by modding two the procs. These are common to most of the programs in the buggy software suite so modding the whole suite should be poss...
by Rfairman
Fri Jun 05, 2020 12:45 pm
Forum: 8-bit acorn hardware
Topic: Microstepping 2 stepper motors from userport
Replies: 2
Views: 134

Microstepping 2 stepper motors from userport

I m trying to use the original bbc buggy software to drive two nema stepper motors from the user port. I am taking the power from the psu accessory socket. The original software pulses bit 1 on the user port and uses bit 0 and 2 to controll direction. I can get the bit 1 pulse to drive one microstep...
by Rfairman
Mon Jun 01, 2020 9:24 pm
Forum: 8-bit acorn hardware
Topic: stepper motor coding
Replies: 4
Views: 460

Re: stepper motor coding

.thanks
by Rfairman
Mon Jun 01, 2020 1:01 pm
Forum: 8-bit acorn hardware
Topic: Stepper Motor Help
Replies: 1
Views: 100

Stepper Motor Help

m trying to get a microstepper to control a Nema 17 Stepper Motor I have connected as shown in the diagram (obviously without the Arduino) The pulse positive of the unit is connected to bit 1 of the userport and the direction + is connected bit 0 of the userport The software pulses bit 1 ok and maki...
by Rfairman
Mon May 18, 2020 5:08 pm
Forum: wanted
Topic: wanted BBC Buggy, Turtle or Robot Arm
Replies: 6
Views: 558

Looking for a Valiant or Jessops Turtle

Still Looking for a Valiant or Jessops Turtle
Please PM me if you have working examples
Regards
Richard
by Rfairman
Tue May 12, 2020 5:04 pm
Forum: 8-bit acorn hardware
Topic: stepper motor coding
Replies: 4
Views: 460

Re: stepper motor coding

Work in Progress BBC Buggy test program modified as below Stfinal.ssd Procs cteated to drive 2 stepper motors fwd bkw and indiviually Uses Control Basic Output diverted to printer port Nema 17 stepper motors driven via Deltronics ControlIT buffer box Control Basic and Stfinal attached The code is a ...
by Rfairman
Thu May 07, 2020 1:15 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

I've put video on the Facebook site
https://www.facebook.com/groups/AcornAn ... ?ref=share
by Rfairman
Wed May 06, 2020 1:05 pm
Forum: 8-bit acorn hardware
Topic: stepper motor coding
Replies: 4
Views: 460

Re: stepper motor coding

Finally got my code to work. I used this document to work out the pulse sequence for 2 phase movement for max torque. I diverted code out put to parallel port which has attached a deltronics buffer box. I am using control basic command such as Pulse Bit 1, You can do the same by writing the correct ...
by Rfairman
Tue May 05, 2020 3:29 pm
Forum: archive submissions
Topic: Step by Step Programming Series
Replies: 13
Views: 577

Re: Step by Step Programming Series

Thanks for typing in these listings. Is there anywhere to down load the book itself
Thanks
by Rfairman
Sun May 03, 2020 2:28 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

That's great thanks I've just put some all terrain tyres on the buggy
R
by Rfairman
Sun May 03, 2020 12:04 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Does this help from the schematic looks like over 19 17 and 15 are top left of the connector
Screenshot_20200422-152953_Xodo Docs.jpg
Screenshot_20200422-152953_Xodo Docs.jpg
by Rfairman
Sat May 02, 2020 1:25 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

that looks great
by Rfairman
Fri May 01, 2020 9:20 pm
Forum: 8-bit acorn hardware
Topic: stepper motor coding
Replies: 4
Views: 460

stepper motor coding

Any Stepper motor coders out there I have been modding the basic Test program that runs the BBC Buggy I have changed the output to the printer port and i have attached a Deltronics Buffer Box I created some procs Procup. Procdown and Procwait I am calling these from the body of the program I am usin...
by Rfairman
Tue Apr 28, 2020 12:37 pm
Forum: 8-bit acorn hardware
Topic: Modding BBC buggy economatics software
Replies: 0
Views: 136

Modding BBC buggy economatics software

:D I have just started modding the bbc buggy software which is very well structured consisting of procs I am using control basic s it simplifies the instructions. I have diverted the beeb output to the printer port (make output printer) to which I have connected Detronics buffer box (available cheap...
by Rfairman
Tue Apr 28, 2020 8:37 am
Forum: general
Topic: Great BBC www site
Replies: 3
Views: 356

Great BBC www site

I dont know if this has bee posted before. Here is great site
http://mdfs.net
by Rfairman
Thu Apr 23, 2020 2:38 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Thanks
I mt from beeb to veroboard then 4 mt from veroboard to buggy
I would like to use uk sourced components

I will of course pay for all components and Royal Mail 1ST class shipping
by Rfairman
Thu Apr 23, 2020 11:34 am
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

And a connector that fiit its from another project
20200423_113000.jpg
20200423_111552.jpg
by Rfairman
Thu Apr 23, 2020 11:31 am
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Thanks here are some photos
20200423_111534.jpg
by Rfairman
Wed Apr 22, 2020 9:32 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Thanks for the detailed reply.
My soldering skills are rubbish as my hands shake too much
I am really looking at the last two options in your second list
Retro clinic have already said it's too involved
I can send photos of the connector on the buggy

Regards

Richard
by Rfairman
Wed Apr 22, 2020 7:55 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Hi I dont have any parts I asked if retroclinic could make up a accessory output + userport + analogue port combined into a single 20 way ribbon cable with connector to the buggy but was told it was too involved So I am looking for an original interface board or to simulate one in veroboard as you h...
by Rfairman
Wed Apr 22, 2020 5:21 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

Re: BBC buggy economatics

Screenshot_20200422-164343_Xodo Docs.jpg
Screenshot_20200422-152943_Xodo Docs.jpg
by Rfairman
Wed Apr 22, 2020 5:16 pm
Forum: 8-bit acorn hardware
Topic: BBC buggy economatics
Replies: 20
Views: 653

BBC buggy economatics

Does anyone have an original BBC b buggy Ecomomatics interface board or any who can make up the cables to replace it
I've tried Mark but he can't help
Screenshot_20200422-162802_Xodo Docs.jpg
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