5VCPC

Bryce · 21:02, 23 January 17

To all those who ordered a 5VCPC: They will be going out in tomorrows post.

Please give some feedback when you've tried them out with details of the PSU you are using and whether the electrolytic capacitor in your CPC has ever been replaced. Also, to answer a question from one user: You can leave the 12V flylead in place if you like and even connect it to 12V when the 5VCPC is installed, it won't be taking the 12V from this connector though, the 5VCPC will still be creating the 12V.

Regarding installation: You will probably have to remove the two screws holding the drive in place to lift the drive and re-arrange the molex connector cable to the new position (other side of the flat cable). Also, be careful when putting the top of the case back on, put the case over the device and then move it forward into place. The 5VCPC can wobble a bit when the case top isn't on, but the case will hold it firmly in place when replaced.

To all those who didn't order a 5VCPC: I still have a few left if anyone is interested.

Bryce.

||C|-|E|| · 03:09, 24 January 17

I will be reporting as soon as I install it, although I am planing to change all the caps and I am using a 5A PSU. I do not expect any surprise

JonB · 19:31, 28 January 17

Arrived today, thanks Bryce! Tiny little thing, obviously well made.

At first it didn't work for me. Then I realised the power supply I was using was too weak (2A). So I hooked it up to a PC supply with "proper 5v power" and now it's all good.

My 6128 has not been used for a long time, and it seems to be having difficulty reading disks... Including the CP/M disk

Oh well, back on the shelf with it. Another problem for another time...

..but I will be back using it again soon (right after my current project is complete. 6128 is next in the list).

P.S. No caps were replaced during the making of this post.

robcfg · 01:05, 29 January 17

I also got mine!

The device is really small and fits very well on the back of the drive. It works beautifully too!

I tried it with my CTM644 monitor because I couldn't wait to get a new psu, and everything went like a charm but for the monitor blinking when the drive motor starts. This, of course, is the result of the CTM not having enough power but, in any case, the device performed very well and the disk drive worked as expected.

With a decent psu and a scart cable, my CPC is free to go wherever I need it to!

Thank you very much!

1024MAK · 23:00, 29 January 17

Mine has arrived

Don't know when, as I have been away for a week. It was waiting for me when I got home this evening.

Although the packet it was in looked very similar to how another hobbyist who lives in Germany, does his. As I picked it up I was racking my brains thinking, I already had a parcel from him last week, what has he sent me?

But all was revealed after I opened it

Thanks Bryce

Mark

PS, at the Stardot meet-up today, your BBC joystick adapter was the topic of one conversation.

||C|-|E|| · 00:32, 30 January 17

Still waiting for mine... let´s see tomorrow

Anyway, until next weekend (luckily) I am afraid that I will not be able to start with my project, so no rush

Bryce · 09:48, 30 January 17

Quote from: 1024MAK on 23:00, 29 January 17
Mine has arrived

Don't know when, as I have been away for a week. It was waiting for me when I got home this evening.

Although the packet it was in looked very similar to how another hobbyist who lives in Germany, does his. As I picked it up I was racking my brains thinking, I already had a parcel from him last week, what has he sent me?

But all was revealed after I opened it

Thanks Bryce

Mark

PS, at the Stardot meet-up today, your BBC joystick adapter was the topic of one conversation.

The Joystick adapter is still very popular. I've just ordered PCBs for another batch of them.

Bryce.

Trixster · 15:01, 31 January 17

Can I just check that I've connected the lead correctly before I power up for the first time?

Bryce · 15:04, 31 January 17

Yes, that's correct. And even if it wasn't (if you had put the white connector on the wrong way), it would not cause any damage as long as the 12V supply is no longer connected.

What type and amperage is the 5V PSU you intend using?

Bryce.

Trixster · 15:10, 31 January 17

Great success! It works, the CPC boots ok even with my 2a psu and your svideo adapter attached

However the machine will reset as soon as I try and access the floppy drive. And if I attach the USB floppy emulator then it won't boot at all. So my psu is too weak. Time to order a better one!

The 2a psu is strong enough to power the CPC, svideo adapter and M4 wifi board though.

Bryce · 15:14, 31 January 17

Yes, if your PSU is anywhere below about 2.6A then the current rush when accessing a disk will cause the CPC to reset. Not sure why the USB Floppy emulator stops the CPC from booting. The 5VCPC has absolutely no effect on it. Does the emulator use the 12V rail for anything? Or more important, is the power socket pinout not reversed on those emulators??

.

Bryce.

Trixster · 15:16, 31 January 17

The USB floppy emulator takes a 5v feed, so the 5v out from your svideo adapter is split into the CPC and into the floppy emulator.

Bryce · 15:24, 31 January 17

Wow, it must be pulling quite a bit of current then! That means your PSU was already running at it's limit before you installed the 5VCPC.

Bryce.

Trixster · 15:44, 31 January 17

Yes, it was high on my list to replace even before I read about the 5VCPC!

Do you think this might be a suitable replacement?

genuine jentec 5v 3a right angle 5.5mm x 2.1mm router d- link power supply https://www.amazon.co.uk/dp/B00JSCTYPI/ref=cm_sw_r_cp_api_BkkKybZ4TX509

Bryce · 15:46, 31 January 17

I'd probably go a bit higher (4A), as the Amp rating is usually the peak value, not what it can sustain over a longer time.

Bryce.

Trixster · 15:48, 31 January 17

Ok, but 2.1mm is the correct jack size?

Bryce · 16:03, 31 January 17

Quote from: Trixster on 15:48, 31 January 17
Ok, but 2.1mm is the correct jack size?

Yes, 2.1/5.5 for the Classic CPC, 2.5 for 5.5 for the Plus.

Bryce.

Trixster · 19:25, 02 February 17

I've found a decent 4a psu. It works perfectly, the CPC runs fine with both the M4 and the USB floppy attached. Top little upgrade Bryce, I love it!

Actually, I've noticed that I get a better picture from the svideo adapter with this new psu, so the 2a one must definitely have been on its last legs or pushed to the limit.

Bryce · 09:21, 03 February 17

Great, glad it all works fine for you. The 2A PSU was probably only good up to 1.5A which is already pushing it for a CPC on its own. When they claim 2A, that's what it can supply in short bursts and peaks, not what it can constantly supply.

Bryce.

kribjo · 12:30, 19 May 17

Guess I'm late to the party. But if you choose to make more in the future I would be interested in buying two 5VCPC's.

Regards,

Bjørn

Bryce · 12:31, 19 May 17

I think I have the parts for two still. I'll check at the weekend and send you a PM.

Bryce.

JonB · 06:45, 08 June 17

How about this for a PSU? Anyone heard of them?

https://www.amazon.co.uk/GOOD-LEAD-Adapter-Charger-5-5mmx2-1mm/dp/B01M9J8LZS/ref=sr_1_2

Bryce · 08:04, 08 June 17

Quote from: JonB on 06:45, 08 June 17
How about this for a PSU? Anyone heard of them?

https://www.amazon.co.uk/GOOD-LEAD-Adapter-Charger-5-5mmx2-1mm/dp/B01M9J8LZS/ref=sr_1_2

The company rebadges PSUs, but it looks like they test and stand behind their products. They are in Belfast, so if anything did go wrong, you have someone to go to: https://acadaptershop.co.uk/about-store
The PSU itself looks to be pretty high quality.

Bryce.

JonB · 08:12, 08 June 17

OK, I ordered it. Now I can get rid of that cheapo 12v/5v PSU.

Thanks Bryce!

Ast · 17:43, 08 June 17

Here is what I did.
Please takes notes that i made this cable for free

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