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by SteveSpencer
Tue Mar 07, 2017 11:00 am
Forum: General discussion
Topic: [SOLVED] Pi Zero W slower CPU than original Pi Zero?
Replies: 11
Views: 13208

Re: Pi Zero W slower CPU than original Pi Zero?

Certainly with Raspbian (sorry, I don't use ARCH), there was a firmware issue to resolve a problem where the Zero W was being clocked at 700MHz, not 1GHz. The latest updates to Raspbian fixed that, according to the Zero W I have here on my desk recompiling a kernel. Don't know, however, if you can f...
by SteveSpencer
Wed Mar 01, 2017 12:57 pm
Forum: Troubleshooting
Topic: Updating a downloaded image
Replies: 2
Views: 558

Re: Updating a downloaded image

Hmm. The short answer is yes and no.
I can do Jessie lite, but not full Jessie, since it runs out of space :(

However, for this particular use-case that's fine, since I am producing headless images for Pi Zero (and Zero W!) anyway.
by SteveSpencer
Wed Mar 01, 2017 11:30 am
Forum: Troubleshooting
Topic: Updating a downloaded image
Replies: 2
Views: 558

Updating a downloaded image

What I want to do is relatively simple. I want to take a downloaded .img file, on a Pi, and bring it up to date in terms of having the latest version of packages (including the kernel). In this way, I would avoid having to run apt-get update && apt-get dist-upgrade when I copy the image to a card an...
by SteveSpencer
Fri Feb 24, 2017 5:17 pm
Forum: General discussion
Topic: Anyone owns cm3
Replies: 20
Views: 4341

Re: Anyone owns cm3

jamesh wrote:Was going to try this, but don't have a CM3L which is required as the CM3 doesn't have enough flash to run Android.
Wow! So if you don't have one, what chances for us mere mortals? :o
by SteveSpencer
Mon Feb 06, 2017 12:53 pm
Forum: General discussion
Topic: Putty connection 64 bit
Replies: 2
Views: 862

Re: Putty connection 64 bit

And to answer the original question, the 32-bit version is fine. I run that on Win10x64 and have no problems.
by SteveSpencer
Thu Jan 19, 2017 10:12 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pin numbering
Replies: 7
Views: 1507

Re: Pin numbering

Thanks Dougie, I now see what you mean, and in the context of the Pi that makes perfect sense - and of course it also means that 40->26 "downgrade" cabling will work perfectly well.

I will go and sit on my hands now, and use my brain instead. :)
by SteveSpencer
Thu Jan 19, 2017 10:09 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pin numbering
Replies: 7
Views: 1507

Re: Pin numbering

Not if you compare the numbering scheme to any common IC. For those, the actual physical pin numbers run 1-20 on the left side, and 21-40 (going upwards) on the right side, whereas in the diagrams on the site, they go row-wise, not column-wise. I'm not saying the pin descriptions are wrong, just tha...
by SteveSpencer
Thu Jan 19, 2017 9:57 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Pin numbering
Replies: 7
Views: 1507

Pin numbering

I admit I didn't know where else to put this, so this seemed appropriate. In all the pin-out descriptions and tables I have seen, from the first Pi to the most recent (except, of course the Compute Modules), the pins are numbered "incorrectly", which has only just dawned on me while I was trying to ...
by SteveSpencer
Fri Jan 13, 2017 1:46 pm
Forum: Troubleshooting
Topic: is the raspian mirror server down?
Replies: 19
Views: 9843

Re: is the raspian mirror server down?

To be clear, Hit http://archive.raspberrypi.org jessie InRelease Hit http://mirrordirector.raspbian.org jessie InRelease Hit http://archive.raspberrypi.org jessie/main Sources Hit http://mirrordirector.raspbian.org jessie/main armhf Packages Err http://archive.raspberrypi.org jessie/ui Sources 406 N...
by SteveSpencer
Fri Jan 13, 2017 12:39 pm
Forum: Troubleshooting
Topic: is the raspian mirror server down?
Replies: 19
Views: 9843

Re: is the raspian mirror server down?

Not quite. Still reporting an issue for Jessie/ui sources
by SteveSpencer
Fri Jan 13, 2017 9:46 am
Forum: General discussion
Topic: apt-get failing, mirrordirector refusing connections
Replies: 2
Views: 725

Re: apt-get failing, mirrordirector refusing connections

Thanks, didn't see that (because I didn't look...)
by SteveSpencer
Fri Jan 13, 2017 9:43 am
Forum: General discussion
Topic: apt-get failing, mirrordirector refusing connections
Replies: 2
Views: 725

apt-get failing, mirrordirector refusing connections

At the time of posting this, I seem unable to connect to http://mirrordirector.raspbian.org/raspbian, so apt-get update is failing.
(Yes, I am running it as root, via sudo).
It is telling me that 46.235.227.11 is refusing the connection with a 406 error.
by SteveSpencer
Wed Jan 11, 2017 11:19 am
Forum: Raspberry Pi OS
Topic: New Jessie Image (2017-01-11) Difference ??
Replies: 36
Views: 11575

Re: New Jessie Image (2017-01-11) Difference ??

ShiftPlusOne wrote:The only difference is that the boot partition is FAT32 instead of FAT16.
Which begs the question, why?
by SteveSpencer
Tue Jan 10, 2017 3:13 pm
Forum: General discussion
Topic: Raspberrypi 0
Replies: 22
Views: 4221

Re: Raspberrypi 0

Same voltage (5V), but generally consumes less current.
by SteveSpencer
Mon Aug 22, 2016 9:02 am
Forum: Raspberry Pi OS
Topic: Is the source code for /opt/vc/bin/edidparser available?
Replies: 6
Views: 2220

Re: Is the source code for /opt/vc/bin/edidparser available?

Give the man a break! :)
As he says, there are interdependencies on the GPU side, so it's not a trivial task.
by SteveSpencer
Tue Jun 28, 2016 2:58 pm
Forum: Other projects
Topic: 7" touchscreen - Modular Case
Replies: 2
Views: 1610

Re: 7" touchscreen - Modular Case

As an alternative, why not use something like the pHat DAC, but fitted with a tall header to pass through the "unused" GPIO pins. I've done this successfully with Zero, B+, 2 and 3 models. A small amp board and speakers could be connected to it relatively easily.
by SteveSpencer
Tue Jun 28, 2016 2:55 pm
Forum: Other projects
Topic: Pi3 Fan connection options
Replies: 5
Views: 8055

Re: Pi3 Fan connection options

If you are careful, it is possible to solder a small wire-wrap at the base of either 5v pin; use a small gauge enamel insulated copper wire normally used for magnet windings--works well. I assume this is on the tall header, not the Pi, since the idea is that if a board dies, I can just swap it out,...
by SteveSpencer
Tue Jun 28, 2016 1:12 pm
Forum: Other projects
Topic: Pi3 Fan connection options
Replies: 5
Views: 8055

Pi3 Fan connection options

[Originally mis-posted in beginners, sorry!] I would like my Pi 3 in a case. I also want it cool, so want to put a 5v fan mounted over the SOC. (Should airflow be away from the SOC, or towards it?) However, I also want to (a) not modify the board in any way and (b) be able to use 40-pin IDC connecto...
by SteveSpencer
Mon Jun 27, 2016 12:08 pm
Forum: Automation, sensing and robotics
Topic: Need help for RFID RC522
Replies: 22
Views: 14318

Re: Need help for RFID RC522

No, it isn't two cards, rather it is two blocks on every card.
However, I will look at the referenced material, thanks :)
by SteveSpencer
Mon Jun 27, 2016 9:02 am
Forum: Automation, sensing and robotics
Topic: Need help for RFID RC522
Replies: 22
Views: 14318

Re: Need help for RFID RC522

You are correct there are not really any security left, I can get all 16 keypairs from a random card in around an hour I think. If you already know one of the keys in the card or if the standard keys are not changed then it takes < 5 minutes to find the rest. Mifare Classic is not a card I would us...
by SteveSpencer
Thu Jun 23, 2016 3:13 pm
Forum: Troubleshooting
Topic: Weird behavior in GPIO
Replies: 9
Views: 1464

Re: Weird behavior in GPIO

Are you using sudo to run your compiled C program?

If not, then it's likely you are not able to progress past the open of /dev/mem, which you are not checking the return from.

See gpiomem for a way to do it without sudo.
by SteveSpencer
Wed Jun 22, 2016 1:23 pm
Forum: Troubleshooting
Topic: Enabling SPI disables alsa sound device
Replies: 2
Views: 926

Re: Enabling SPI disables alsa sound device

What version of Raspbian are you using?
I am using the latest Jessie (2016-05-27), and with that version you shouldn't do 'device_tree='.

Why do you need to disable device tree to get SPI to work? What happens if you just have

Code: Select all

dtparam=spi=on
instead?
by SteveSpencer
Fri Jun 17, 2016 3:57 pm
Forum: General discussion
Topic: Feedback on HubPiWi Hub with WIfi for Pi Zero
Replies: 19
Views: 6059

Re: Feedback on HubPiWi Hub with WIfi for Pi Zero

Does this work with the original Pi Zero, or the new one with camera connector?

As I see from the two in front of me, the pogo pins would need to be in different places.
by SteveSpencer
Fri Jun 17, 2016 2:30 pm
Forum: Device Tree
Topic: Multiple SPI slaves - best option?
Replies: 11
Views: 3056

Re: Multiple SPI slaves - best option?

I think the failure of file to display information about your overlay is a quirk of the way file works and something about the properties of your overlay (the magic file containing the signatures is fairly opaque and I don't have time to figure out exactly what the problem is) - there is nothing wr...
by SteveSpencer
Fri Jun 17, 2016 10:34 am
Forum: Device Tree
Topic: Multiple SPI slaves - best option?
Replies: 11
Views: 3056

Re: Multiple SPI slaves - best option?

Hi Phil

Apologies for the delay; I've been off sick.
My compiled dtbo is here: http://www.smspencer.org/esp0.dtbo

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