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by SteveSpencer
Wed Apr 20, 2016 2:29 pm
Forum: General discussion
Topic: Is there a way to connect SSD's to Pi?
Replies: 18
Views: 18016

Re: Is there a way to connect SSD's to Pi?

You will not get the speed you are paying for on a SSD so may be cheaper to use normal SATA drives. That is true. However, there is another advantage to SSD over "normal" drives; namely that they are much more resistant to physical shock, since there are "no moving parts". This has distinct advanta...
by SteveSpencer
Thu Apr 14, 2016 10:12 am
Forum: General discussion
Topic: Pi Zero new feature
Replies: 169
Views: 33372

Re: Pi Zero new feature

So a complete lack of network connectivity isn't important in something that is going to Borg like take over the world? What would the Borg be like without network connectivity?: "Seven of Nine calling Seven of Eight, is there anybody out there? Break, break." Mine are on networks. I have USB WiFi ...
by SteveSpencer
Fri Apr 08, 2016 12:07 pm
Forum: Off topic discussion
Topic: Random USB thing, why would it be used?
Replies: 5
Views: 1026

Re: Random USB thing, why would it be used?

If you want a relatively cheap UPS for the Pi, you could use is an RS Power Bank like this one: http://uk.rs-online.com/web/p/power-banks/8986690/ Plug your supply into it as a charger, and a cable from it to your Pi (not a Pi3, it may not provide enough current). Unlike cheaper alternatives, it wil...
by SteveSpencer
Thu Mar 24, 2016 3:44 pm
Forum: Troubleshooting
Topic: DM9601 Ethernet HUB's
Replies: 4
Views: 2777

Re: DM9601 Ethernet HUB's

I have three of these, if they are the same, having what looks like a power adaptor connection on the opposite side to the USB ports. They seem to work OK on Jessie 4.1.19-v7+, with one drawback. They all report the same MAC address, 00:e0:4c:53:44:58, which is problematic if you have more than one ...
by SteveSpencer
Thu Mar 03, 2016 9:03 am
Forum: Troubleshooting
Topic: mirrordirector.raspbian.org issues
Replies: 1
Views: 320

Re: mirrordirector.raspbian.org issues

Well, whatever it was (and since it affected me through 3 ISPs, I think I can rule out local issues), it's now resolved. I have now upgraded both the Pi2 and Pi0. (I'm also hoping for a delivery today of the new Pi3 I ordered, but of course, with the exception of RS, I imagine most UK stockists are ...
by SteveSpencer
Wed Mar 02, 2016 4:23 pm
Forum: Troubleshooting
Topic: mirrordirector.raspbian.org issues
Replies: 1
Views: 320

mirrordirector.raspbian.org issues

I'm trying to apt-get update/upgrade the latest Jessie lite image (26-02) on a Zero. I have networking set up correctly, and checks show the network (a USB 10/100 adaptor + HUB from Pimoroni) is established and routing correctly. However, it repeated tells me (over the last hour or so) that it canno...
by SteveSpencer
Wed Jan 20, 2016 9:11 am
Forum: HATs and other add-ons
Topic: Analogue Cap - Get audio VGA and Composite out of GPIO
Replies: 5
Views: 1250

Re: Analogue Cap - Get audio VGA and Composite out of GPIO

Hmm, you must be a lot younger or have much better hand/eye coordination than me, then... :D
by SteveSpencer
Tue Dec 01, 2015 3:30 pm
Forum: General discussion
Topic: Raspberry pi zero equivalent with Ethernet
Replies: 168
Views: 45032

Re: Raspberry pi zero equivalent with Ethernet

Aside from the DSI and camera connections, oh, and the analogue audio out. :? However, none of that matters, since you have a 1GHz processor, 512MB RAM and other goodies, for a lot less than it used to be. Of course, to make the SPI Ethernet work, you do need to connect the module to the GPIO as wel...
by SteveSpencer
Tue Dec 01, 2015 12:58 pm
Forum: General discussion
Topic: Raspberry pi zero equivalent with Ethernet
Replies: 168
Views: 45032

Re: Raspberry pi zero equivalent with Ethernet

You don't need god-like coding skills to use one, I'm pretty sure that there is a device tree overlay for the ENC variant. I have a number of them from a well known Chinese supply site that sounds like a character from the Arabian Nights, and used them in Arduino/AVR projects. I am going to try conn...
by SteveSpencer
Wed Nov 25, 2015 11:50 am
Forum: Raspbian
Topic: Pi display and touchscreen rotation
Replies: 0
Views: 265

Pi display and touchscreen rotation

I have the official touchscreen, in a Pimoroni frame. This means I use lcd_rotate=2 in the config file. However, I accidentally used display_rotate=2 instead, which worked, but my touchscreen was inverted. If I had an HDMI display with a touchscreen, I'd probably want it oriented the same way as the...
by SteveSpencer
Tue Nov 24, 2015 12:28 pm
Forum: C/C++
Topic: Yesterday it ran. Today "permission denied" even as root
Replies: 5
Views: 911

Re: Yesterday it ran. Today "permission denied" even as root

There are a number of possible avenues to explore. First, unless you alter your PATH to include the current folder, you have to prefix the executable with ./, such as ./SPIck Secondly, in the first version of your compile command line, you use both -c and -o. This leaves you with an unlinked object ...
by SteveSpencer
Thu Nov 05, 2015 9:48 am
Forum: Raspbian
Topic: Building modules for jessie [solved]
Replies: 1
Views: 525

Re: Building modules for jessie

Doh!

I had overlooked that I need to make zImage before I make modules. Problem solved.
by SteveSpencer
Thu Nov 05, 2015 9:17 am
Forum: Raspbian
Topic: Building modules for jessie [solved]
Replies: 1
Views: 525

Building modules for jessie [solved]

Recently, I bought some HDMI screens, which include touch overlays using USB. One of these is an Eleduino, which has the USB id 0eef:0005, and is not supported by the eGalax or generic driver modules. Eleduino allegedly supply a prebuilt image that supports it, but (a) I don't want to use that becau...
by SteveSpencer
Thu Aug 27, 2015 12:56 pm
Forum: Raspbian
Topic: Distribution updates going awry!
Replies: 9
Views: 1627

Re: Distribution updates going awry!

There are no plans to release any more wheezy images.
OK, understood. Is there a timescale for jessie, or is it a case of "when it's ready" ?
by SteveSpencer
Thu Aug 27, 2015 8:16 am
Forum: Raspbian
Topic: Distribution updates going awry!
Replies: 9
Views: 1627

Re: Distribution updates going awry!

On a related note, are there plans to update the download image (currently 05-05) so it is 4.1 as well, or is that not being done until Jessie is "completely" ready?
by SteveSpencer
Tue Jul 21, 2015 4:29 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: accessing i2c address greater than 127 in pi2 using python
Replies: 21
Views: 5801

Re: accessing i2c address greater than 127 in pi2 using pyth

How exactly have you connected this?

According to the datasheet, it is a 5V device, so if it were me, I'd be using a bi-directional level-converter. Since the RPi has I2C pull-ups, you shouldn't need any other resistors, but of course, you will need to make sure you have a common ground.
by SteveSpencer
Fri Jul 10, 2015 8:00 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Installing i2c-tools fails (MAKEDEV)
Replies: 2
Views: 1412

Re: Installing i2c-tools fails (MAKEDEV)

Reboot. Although it looks like an error, what it's actually saying is that the installation would normally run makedev (to create /dev/i2c* files), but because the system daemon is already running, it won't. When you reboot, you should then see /dev/i2c* files and stuff like i2cdetect will happily r...
by SteveSpencer
Mon Jun 22, 2015 8:19 am
Forum: Automation, sensing and robotics
Topic: RFID
Replies: 4
Views: 1017

Re: RFID

Not reliably. I know that on Arduino there is "soft serial", but the receive can be a bit unreliable. The simplest way would be to use a USB/Serial converter, which is what the original PDF talks about. Raspbian will recognise the device and create a /dev/ttyUSB entry for each one, and then you can ...
by SteveSpencer
Fri Jun 19, 2015 3:55 pm
Forum: Automation, sensing and robotics
Topic: RFID
Replies: 4
Views: 1017

Re: RFID

I'm using RPI 2 with a RFID reader whose datasheet can be downloaded here http://ram-e-shop.com/oscmax/catalog/redirect.php?action=url&goto=www.ram-e-shop.com%2Fds%2Fgeneral%2FRFID_125K_MODULE.pdf . I've looked at github and the closest code is https://gist.github.com/mattgorecki/6085344 yet it use...
by SteveSpencer
Fri Jun 19, 2015 8:09 am
Forum: Automation, sensing and robotics
Topic: RFID
Replies: 4
Views: 1017

Re: RFID

According to the PDF, the module will write out 5 bytes of data on a UART (serial connection) at 9600 baud. If it was me, I'd use something like miniterm (or some other emulator) to receive the data and see what it's really sending. Although it says 5 bytes, does it send as ASCII hexadecimal or raw ...
by SteveSpencer
Fri May 29, 2015 10:25 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Another i2c problem
Replies: 12
Views: 3119

Re: Another i2c problem

Are you using NOOBS or a straight Raspbian image? To get mine to work on a brand new SD image (05-05-2015) and a new Pi2, I used raspi-config to enable i2c, added i2c-dev into /etc/modules and rebooted. It worked first time, and I could talk to my relay board straightaway. (I did also install i2c-to...
by SteveSpencer
Tue May 26, 2015 2:53 pm
Forum: Media centres
Topic: Equivalent command line get_iplayer for other services
Replies: 1
Views: 598

Equivalent command line get_iplayer for other services

I have started to use the excellent get_iplayer package in conjunction with omxplayer to download/view BBC content. I think that if I used XMBC or OSMC that there are plug-ins available to work with ITV Player, and 4OD (now 4ALL). Does anyone know if there are text-based/command-line packages that w...
by SteveSpencer
Tue May 26, 2015 12:25 pm
Forum: Raspbian
Topic: Problem with DHCP client
Replies: 2
Views: 3941

Re: Problem with DHCP client

See viewtopic.php?f=28&t=110331&p=757705#p757705

I had a similar problem using the 5th May image.
by SteveSpencer
Wed May 13, 2015 9:51 am
Forum: Raspbian
Topic: Raspbian released on 2015-05-05
Replies: 118
Views: 18495

Re: Raspbian released on 2015-05-05

I don't see the ssh issue when I'm running on Pi2, with Putty (0.60) with no username supplied, from a Win7sp1 laptop over wired connection. network is 1Gb, but obviously the Pi is 100Mb. I also have a second network here which is all 100Mb, same version of Putty, same Win7sp1, and it's a different ...
by SteveSpencer
Wed May 13, 2015 8:38 am
Forum: Troubleshooting
Topic: [SOLVED] DHCP reservation no longer working
Replies: 1
Views: 4611

Re: DHCP reservation no longer working

OK, I found it. In /etc/dhcpcd.conf there is a section which turns on one or other of the options clientid or duid as the identifier. The clientid option is apparently off by default, which is just the MAC address, and the duid option is on by default, which is the MAC address, prefixed by some "ran...

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