Re: [Ql-Users] My slice of Pi
In message 507e723b.5010...@dunbar-it.co.uk, Norman Dunbar nor...@dunbar-it.co.uk writes Hi Malcolm, On 16/10/12 21:45, Malcolm Cadman wrote: I have purchased a 10 Port USB powered Hub, from Maplins, on offer at 14.99ukp. Two ports upright, and four each at front and back. In a small and neat housing. That I am now using with Pi. So plenty of room for any future expansions and experiments . :-) Have you read this http://qdosmsq.dunbar-it.co.uk/blog/2012/08/the-dangers-of-cheap-usb-hubs/ - you need to be sure that your power supply is man enough (500mA per port - so you should have a 5A supply) plus, there's a link to a disassembly and testing of a cheap power supply supplied with other USB hubs. Interesting viewing and explains a lot! Does your Pi's power light come on when the Pi is connected only to the uplink to the Hub while the Pi is powered off and the hub powered on? If so, it's bad for your Pi and completely not USB 2.0 Compliant. Hopefully, yours will be ok. Umm, applied the 'Dunbar' test to 10 Port USB - it is a cerulian USB 2.0. The two upright (top loading) are designed to be hot swappable, whilst the others can be used for everyday usage. Of course, no need for the extra power supply, when just using a keyboard and mouse. -- Malcolm Cadman ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
On 16/10/2012 04:17, Norman Dunbar wrote: Hi Bryan, On 16/10/12 11:43, Bryan Horstmann wrote: Somehow we've got into top reply, so I will follow. I've just realised that one USB keyboard I have is a radio one so I get a bonus of keyboard and mouse using only one USB. Back to bottom posting! ;-) You might have a problem with the USB stuff depending on the revision on Pi that you get. The originals had a limit of 100mA per USB port and some keyboards and/or mice drew more which caused a drop in the voltage available on the board, which caused the Pi to either drop key-presses and/or auto-repeat at a million presses per micro-second! Later models, even those prior to the new 512 Mb version, have had the usb poly-fuses removed thus removing the limit, but if your power supply is flakey in any way, it will still cause problems if too much is drawn by the USB ports. I've upgraded my own Pi by soldering a jumper over the two poly fuses. Nice work if you have young eyes! Got there in the end though, and so far, no problems. There is a list of compatible USB keyboards and mice (amongst other things) at http://www.elinux.org/RPi_VerifiedPeripherals. Cheers, Norm. Hello Norman, The wireless keyboard/mouse is battery powered within in the units, so the only load is the wireless dongle, which shouldn't take much. Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Hi Tony, You need a good ringlight magnifier and 1mm soldering iron. That set-up, even with my old eyes, allowed soldering of the .5mm pitch pins on Romdisq. Well, I have a helping hands with a decent magnifying glass that I used and a geologists 30* illuminated Loupe. I was soldering my Gerboard last night and it has 20 surface mount components to do, got they are tiny p- about 3 mm by 1 mm for a pile (10) capacitors. Took me ages, and I dropped two of them as well. Took ages to find them. I don't have a ringlight, but mu head torch (LED) works fine when positioned on the circuit board close to where I'll be sticking a hot iron! I managed 15 SMDs last night, 5 to go! Took over an hour. This is my first foray into SMDs - I can't say I'm keen, they are too damned small and even getting them out of the packaging is tense. Cheers, Norm. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Hi Malcolm, On 16/10/12 21:45, Malcolm Cadman wrote: I have purchased a 10 Port USB powered Hub, from Maplins, on offer at 14.99ukp. Two ports upright, and four each at front and back. In a small and neat housing. That I am now using with Pi. So plenty of room for any future expansions and experiments . :-) Have you read this http://qdosmsq.dunbar-it.co.uk/blog/2012/08/the-dangers-of-cheap-usb-hubs/ - you need to be sure that your power supply is man enough (500mA per port - so you should have a 5A supply) plus, there's a link to a disassembly and testing of a cheap power supply supplied with other USB hubs. Interesting viewing and explains a lot! Does your Pi's power light come on when the Pi is connected only to the uplink to the Hub while the Pi is powered off and the hub powered on? If so, it's bad for your Pi and completely not USB 2.0 Compliant. Hopefully, yours will be ok. Cheers, Norm. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
On 17/10/12 03:09, Dave Walker wrote: The Model 'A' is still quoted as shipping with 256MB of RAM (the same as the 'original' Model 'B') although I guess there is always a chance it might come with 512MB like the 'new' Model 'B'. The Model A will ship with 256 Mb of RAM and no more. The Model B (or B+) will not be upgraded on memory again, it has reached the limit of module sizes for the type of memory it needs. There are announcement/comments on the foundation web site detailing these facts. HTH Cheers, Norm. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Norman Dunbar wrote, on 17/Oct/12 09:47 | Oct17: Norman/ You need a good ringlight magnifier and 1mm soldering iron. That set-up, even with my old eyes, allowed soldering of the .5mm pitch pins on Romdisq. Well, I have a helping hands with a decent magnifying glass that I used and a geologists 30* illuminated Loupe. I was soldering my Gerboard last night and it has 20 surface mount components to do, got they are tiny p- about 3 mm by 1 mm for a pile (10) capacitors. Took me ages, and I dropped two of them as well. Took ages to find them. I don't have a ringlight, but mu head torch (LED) works fine when positioned on the circuit board close to where I'll be sticking a hot iron! I managed 15 SMDs last night, 5 to go! Took over an hour. This is my first foray into SMDs - I can't say I'm keen, they are too damned small and even getting them out of the packaging is tense. These is a good trick. I use solder braid (Chemwik Lite - or something like that). This makes the initial soldering easy, as any pin shorts are sucked away. ... so when soldering .5mm pitch pins, one does not worry unduly about initial shorts. Tony -- t...@firshman.co.uk http://firshman.co.uk Voice: +44(0)1442-828254 Fax: +44(0)1442-828255 Skype: tonyfirshman TF Services, 29 Longfield Road, TRING, Herts, HP23 4DG ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
In message CAD15Wt18uRn-+13=koKuPTQxWMmzA=bpmarx+8pmy6gkmj2...@mail.gmail.com, Dave Park plasticu...@gmail.com writes Hi Dave, Yes, that is the 'Model B' specification. Maybe they are giving up with Model A basic concept. PS - Someone has engineered a Pi into an old Cherry keyboard ... so a 'computer in a keyboard' . Good news, a stealth specification upgrade from 256MB to 512MB for all deliveries going forward from today :) Dave On Mon, Oct 15, 2012 at 2:32 AM, John Alexander acontractor...@yahoo.co.uk wrote: Yes it has a composite output as well --- On Fri, 12/10/12, Bryan Horstmann b...@newlan.org wrote: From: Bryan Horstmann b...@newlan.org Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Friday, 12 October, 2012, 15:09 On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able to use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm -- Malcolm Cadman ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
In message 507d3a49.5060...@newlan.org, Bryan Horstmann b...@newlan.org writes Hi Bryan, Yes, I have been 'given' one of those, by a fellow London QL Group member. Yet, have not tried it as yet. Let us know how you get on. There are wi-fi USB dongles being promoted, too. I have purchased a 10 Port USB powered Hub, from Maplins, on offer at 14.99ukp. Two ports upright, and four each at front and back. In a small and neat housing. That I am now using with Pi. So plenty of room for any future expansions and experiments . :-) Somehow we've got into top reply, so I will follow. I've just realised that one USB keyboard I have is a radio one so I get a bonus of keyboard and mouse using only one USB. Bryan H On 16/10/2012 04:00, Dave Park wrote: Good news, a stealth specification upgrade from 256MB to 512MB for all deliveries going forward from today :) Dave On Mon, Oct 15, 2012 at 2:32 AM, John Alexander acontractor...@yahoo.co.uk wrote: Yes it has a composite output as well --- On Fri, 12/10/12, Bryan Horstmann b...@newlan.org wrote: From: Bryan Horstmann b...@newlan.org Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Friday, 12 October, 2012, 15:09 On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able to use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm -- Malcolm Cadman ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Hi the Pi gives composite and it's colour not B/W it also does both NTSC and PAL the switch for which is in that config file in /boot (name forgotdoh) Mine worked immediately on my TV and a mates monitor made from a broken portable DVD in a laser cut case BTW the Composite/Scart adaptor is merely a passive device connecting the phono output to the particular pins on the SCART no real magic involved Your TV may have some configuration problem can you plug an old vcr or DV into the composite port ? John --- On Tue, 16/10/12, Malcolm Cadman q...@mcad.demon.co.uk wrote: From: Malcolm Cadman q...@mcad.demon.co.uk Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Tuesday, 16 October, 2012, 21:34 In message 1350286344.22422.yahoomailclas...@web29404.mail.ird.yahoo.com, John Alexander acontractor...@yahoo.co.uk writes Hi John, I would be interested to know if your composite video connection works directly with the Pi. Connecting directly to the input on my TV does not work. Yet, I have found a 'work around' by connecting a Scart to Composite convertor plug. The latter I found was available for 1ukp at a local PoundLand. The display is then in BW. Sound is available, too, with a separate mini-jack plug to RCA phone plug at the Scart adaptor. Now I can what Pi is doing ... :-) Yes it has a composite output as well --- On Fri, 12/10/12, Bryan Horstmann b...@newlan.org wrote: From: Bryan Horstmann b...@newlan.org Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Friday, 12 October, 2012, 15:09 On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm -- Malcolm Cadman ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
-Original Message- From: ql-users-boun...@lists.q-v-d.com [mailto:ql-users- boun...@lists.q-v-d.com] On Behalf Of Malcolm Cadman Sent: 16 October 2012 21:35 To: ql-us...@q-v-d.com Subject: Re: [Ql-Users] My slice of Pi In message 1350286344.22422.yahoomailclas...@web29404.mail.ird.yahoo.com, John Alexander acontractor...@yahoo.co.uk writes Hi John, I would be interested to know if your composite video connection works directly with the Pi. Connecting directly to the input on my TV does not work. Yet, I have found a 'work around' by connecting a Scart to Composite convertor plug. The latter I found was available for 1ukp at a local PoundLand. The display is then in BW. Sound is available, too, with a separate mini-jack plug to RCA phone plug at the Scart adaptor. Now I can what Pi is doing ... :-) The default TV mode for the Pi is NTSC. If you are getting BW output then that probably means your TV does not know how to handled NTSC. You can tell the Pi to use PAL by adding an entry to the config.txt file in the boot partition of the Pi as described at: http://elinux.org/R-Pi_ConfigurationFile The entry to get PAL output is sdtv_mode=2 and there are also entries available to control things like overscan and aspect ratio. Dave Walker Tel: +44 (0)1707 652791 Web: http://www.itimpi.com Skype: itimpi Yes it has a composite output as well --- On Fri, 12/10/12, Bryan Horstmann b...@newlan.org wrote: From: Bryan Horstmann b...@newlan.org Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Friday, 12 October, 2012, 15:09 On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm -- Malcolm Cadman ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Yes it has a composite output as well --- On Fri, 12/10/12, Bryan Horstmann b...@newlan.org wrote: From: Bryan Horstmann b...@newlan.org Subject: Re: [Ql-Users] My slice of Pi To: ql-us...@q-v-d.com Date: Friday, 12 October, 2012, 15:09 On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able to use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
On 12/10/2012 02:38, q...@mcad.demon.co.uk wrote: Hi, Finally received my slice of Pi - the Raspberry Pi, from RS - today 12th October 2012. I had to re-order, earlier in the Year, when my email address used was no longer working I also ordered a Type B Case, in white, and a 4GB SD Card with OS installed. Which all fits together by simple clip fittings on the injection moulding. Although, RS are posting the Pi PCB with a plastic protective casing, albeit in a translucent shade of raspberry pink! Umm ... like the early days of 'home computing', you have to put something else with it. I don't have an HDMI display, yet may be able to use a DVI on my old TV. Then there is the need for a USB keyboard and mouse. My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
Hi Bryan, My Pi is due soon; I've a USB keyboard, USB hub and card reader, and PSU. The missing bit is a monitor. I use a mono Philips on the QL, video input and have another later style Philips as spare. Will the Pi work through the video input? Otherwise I have got video i/p on the TV. The Pi has HDMI sound and vision output from the HDMI connector, there's a suitable cable on Amazon, gold plated contacts, for around £1.00 - I have one, and it just works. The HDMI output can be converted to DVI with a suitable converter, and I'm told by a contributor to Everyday practical Electronics, Mike Hibbett, that this DVI can be further converted to VGA with another converter. Sounds very early QL with bit hanging off everywhere to me. Maybe that's why I like it! The DVI and/or VGA output will be devoid of sound as the DVI system doesn't cater for sound, I'm told. However, you can redirect sound to a 3.5mm stereo jack on the side of the Pi with a simple command: sudo amixer cset numid=3 0 Where the final digit, zero above, is as follows: 0 = Auto (I have no idea what this actually means, or does!) 1 = Sound goes to the headphone socket 2 = Sound goes to HDMI Yes, I know, the command makes a whole lot of sense doesn't it! I have a apid of X-mini speakers with a built in amplifier connected to mine, and it works perfectly. My own Pi is running headless and is configured on my network with a static IP address. I can ssh -X onto it from my laptop etc, and as I'm running Linux, my Pi programs appear on my laptop, thanks to the wonders of X redirects. Also attached to the Pi, for anyone without a HDMI monitor, is a composite video output socket - so you should be able to get something working. However, you might need to delve into the config.txt file on the /boot partition. Details in the Raspberry Pi Users Guide by Eben Upton and Gareth Halfacree - which I have and thoroughly recommend for anyone taking their first Raspberrry flavoured steps. By then I hope to be able to get an SD card with a QL emulation; is anyone going to market one, please? Uqlx is currently undergoing some development and testing in the wild. Watch this list for details as and when there are some and as and when Tobias puts them online. One thing, you might want/need a powered USB hub for your Pi if your USB keyboard and mouse draw too much current. Read the article on the end of the following link before buying a cheap USB hub. http://qdosmsq.dunbar-it.co.uk/blog/2012/08/the-dangers-of-cheap-usb-hubs/ Have fun. Cheers, Norm. -- Norman Dunbar Dunbar IT Consultants Ltd Registered address: Thorpe House 61 Richardshaw Lane Pudsey West Yorkshire United Kingdom LS28 7EL Company Number: 05132767 ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
Re: [Ql-Users] My slice of Pi
On 12/10/2012 05:56, QL-MyLink (f/fh) wrote: Brian asks - Will the Pi work through the video input? Otherwise I have got video i/p on the TV. -- In the current 'Computer Active' (382) at page 12, a correspondent has written - I have been using my Pi with a HDMI to VGA adapter which costs about £14. Using the composite output produces very poor resolution but on my VGA it is extremely good. Greetings to all, John in Wales Thanks for all the advice; the USB Hub/card reader can be powered if need be. I only want the display to show QL, and that only for running/keying in programs, so resolution isn't a problem. I've also USB floppy drives which I still use a lot. One floppy will keep all my work for a particular project, and I can find it easily. Also two portable hard drives a 6GB and a 30G. Plenty of permutations there!! But I just want this one to switch on and run like my QL, so my wife can use it as well. I'll get another one if I want to start tinkering. Bryan H ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
