Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Arc/RPCs, peripherals, RISCOS operating system & ARM kit eg GP2x, BeagleBoard
rthorntn
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Aug 30, 2018 5:49 am

Thanks, I don't have a keyboard so I'm assuming the VGA goes to sleep after a minute or so because the screen goes blank?

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DutchAcorn
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by DutchAcorn » Thu Aug 30, 2018 6:06 am

rthorntn wrote:
Thu Aug 30, 2018 5:15 am
It's alive!!!

RISC OS 4096K
No keyboard present - autobooting
Supervisor

#
Congrats!

Without a keyboard it is hard to find out if the cmos still works. But a Supervisor prompt is a very encouraging start.
Paul

Image

rthorntn
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Aug 30, 2018 6:09 am

Thanks, I'm arranging a keyboard, shouldn't be a problem.

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Aug 30, 2018 6:25 am

On the other hand, getting a mouse seems to be an issue, are they rare, does anyone have a spare one I can buy?

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danielj
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by danielj » Thu Aug 30, 2018 6:55 am

They're rare as anything these days... I can send you a PCB to make a smallymouse2 if you like?

https://www.waitingforfriday.com/?p=827

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Aug 30, 2018 7:01 am

Thanks again Daniel that would be awesome and I will happily cover your costs, I was considering having a bunch made at PCBWay but obviously I only need one and the shipping is killer for low quantities, any ideas where I can get the keyboard connector cable and AT90USB1287 cost effectively in tiny quantities?

On ebay the AT90USB1287 is A$20 locally, A$7 on the slow boat and U$9 from digikey but I have to order 7 of them to get free delivery, ah the first world problems I have.
Last edited by rthorntn on Thu Aug 30, 2018 7:16 am, edited 2 times in total.

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danielj
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by danielj » Thu Aug 30, 2018 7:59 am

You can get 10 made for $2US +postage at jlcpcb? That might be cheaper if you're looking to do a few?
The connector is a 9pin minidin - mega drive rgb cables do the job iirc? Dirt cheap here on eBay.
d.
Last edited by danielj on Thu Aug 30, 2018 8:00 am, edited 1 time in total.

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by aotta » Thu Aug 30, 2018 9:13 am

I solved this wayfor the A3000:
viewtopic.php?f=16&t=9334&p=170915&hili ... rd#p170915

And used the adaptor in the above thread for the A4000 keyboard and mouse
Last edited by aotta on Thu Aug 30, 2018 9:15 am, edited 1 time in total.

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Wed Sep 05, 2018 8:34 am

Thanks everyone, OK so the keyboard arrived , I cleaned it up and plugged it in, no workie.

So I start looking at the motherboard, continuity tests tell me that of the three tracks the two outer tracks are damaged.

I "juiced" the traces, gave them a light rub, cleaned them up and low and behold the traces are broken in quite a few places over about a 5cm area where the traces come right up to the edge of the mainboard.

I'm thinking of just soldering two lengths of wire wrap wire between the keyboard port solder joints and the "via" pads for R213 and R63 (with small dabs of hot glue holding the wire flush to the board), is that what you would do?

I think the traces are too thin and delicate for me to attempt any surgery directly on them.
Last edited by rthorntn on Wed Sep 05, 2018 8:42 am, edited 4 times in total.

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danielj
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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by danielj » Wed Sep 05, 2018 8:46 am

Indeed, kynar hookup wire or wirewrap wire is usually the best way of fixing these things.

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Sep 06, 2018 12:50 am

Thanks, surgery performed, keyboard working.

Started up the system holding the "Delete" key and I have a desktop!

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Sep 06, 2018 1:25 am

On the mouse front I just grabbed a A$15 amiga to PS2 kit and a A$10 sega megadrive 2 to scart cable.

Hack up the cable and solder the wires to the pads where the DB9 would normally go.

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by aotta » Thu Sep 06, 2018 1:39 pm

I usually use db9 serial cable, cheap and with less wires than a scart.
Give a tray to your floppy and ide ports if working, you can check them from command line, without mouse.
If you had damage to keyboard tracks, more probably you lost some connection on that ports, that are nearest to battery

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by rthorntn » Thu Sep 06, 2018 1:46 pm

Thanks, sorry I'm confused what do I use the db9 serial cable for, the mouse?

I thought I plugged the mouse into the DIN socket at the rear of the keyboard?

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Re: Please help with another blooming "I just got a BEEB from Ebay" thread :-)

Post by aotta » Thu Sep 06, 2018 1:59 pm

rthorntn wrote:
Thu Sep 06, 2018 1:46 pm
Thanks, sorry I'm confused what do I use the db9 serial cable for, the mouse?

I thought I plugged the mouse into the DIN socket at the rear of the keyboard?
No, you are right, the standard mouse port is a mini Din-9.
I was confused by your writing about the DB9, and i thought you was planning a DB9 Male cord to solder directly in the right spot of motherboard, as i made with my A3000 (but, in the A3000, the mouse port are in an unusual and hidden place... for the A4000 it will be less useful! :D )

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