jamesh
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Raspberry Pi Engineer & Forum Moderator
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Updated FAQ page.

Fri Sep 21, 2018 10:22 am

Moved to github and updated.

https://www.raspberrypi.org/documentation/faqs/

Please report any issues or request additions in this thread.

Thanks.
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epoch1970
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Re: Updated FAQ page.

Sat Sep 22, 2018 3:41 pm

I like it! I found the doc an interesting read, although I'm not an absolute beginner.

I've noticed in the "Power requirements" section:
- An extra tab in the last table (real-world power consumption figures)
- Pi 3B+ seems to be missing from the section.

HTH
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

DirkS
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Re: Updated FAQ page.

Sat Sep 22, 2018 4:03 pm

Second table in the power 'Power' section: on the last row all values are shifted to the right (an the last one disappears). There's an empty cell to the right of 'Avg'

Raw content from Github:

Code: Select all

| Stress | Max | 0.35 | 0.82 | 1.34 | 0.35 |
| | Avg || 0.32 | 0.75 | 0.85 | 0.23 |
Last edited by DirkS on Sat Sep 22, 2018 6:23 pm, edited 1 time in total.

fbe
Posts: 466
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Re: Updated FAQ page.

Sat Sep 22, 2018 6:16 pm

The following links on the page redirect to https://www.raspberrypi.org/404/

Code: Select all

https://www.raspberrypi.org/documentation/faqs/hardware/raspberrypi/conformity.md
https://www.raspberrypi.org/documentation/faqs/hardware/computemodule/README.md
https://www.raspberrypi.org/documentation/faqs/configuration/warning-icons.md
https://www.raspberrypi.org/documentation/faqs/linux/usage/rc-local.md
https://www.raspberrypi.org/documentation/faqs/linux/usage/cron.md
https://www.raspberrypi.org/documentation/faqs/hardware/raspberrypi/gpio/README.md
https://www.raspberrypi.org/documentation/faqs/hardware/raspberrypi/bootmodes/msd.md
https://www.raspberrypi.org/documentation/faqs/hardware/raspberrypi/bootmodes/net.md
https://www.raspberrypi.org/documentation/faqs/setup/
https://www.raspberrypi.org/documentation/faqs/configuration/boot_folder.md

hippy
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Location: UK

Re: Updated FAQ page.

Sat Sep 22, 2018 6:46 pm

References to "Mhz" should be "MHz", "Ghz" should be "GHz", in the table and elsewhere in the text.

"The Model A+ is the low-cost variant of the Raspberry Pi" - The Zero, Zero W and Zero WH are all lower cost. Perhaps "lowest-cost, credit card sized, Pi" or similar.

"The Pi Zero ... and mini-HDMI and USB On-The-Go ports" I would rewrite that as "mini-HDMI output plus a USB OTG port" to make it less ambiguous, clearer the USB is singular.

"Depending on the model, the Raspberry Pi has either 40 or 26 dedicated GPIO pins" - technically a 40 or 26-way connector, not all are actual GPIO pins.

"entering sudo halt -h (without the quotation marks)" - There are no quotation marks, the sudo halt -h command is in boxed decoration (ICODE?). Same issue elsewhere when it refers to ignoring non-existent quotes.

"Wait until all the LEDs except the power LED are off" - "wait until all LEDs ... stop flashing and stay off. You should see ten flashes of the activity LED as the Pi shuts down".

"The Pi Zero uses a mini-HDMI port." -- Plus header for composite video.

"Why is there no VGA support?" - That question is never actually answered!

"If you brick the device, you can restore it by reflashing the SD card" - Might want to define what "brick" means in that respect; not all people have the same definition and some people's "bricked Pi" are unrecoverable.

"There is a standard 3.5mm jack for audio out to an amplifier " - Except on zeroes.

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: Updated FAQ page.

Sat Sep 22, 2018 10:28 pm

Thanks all, will sort out this stuff on Monday. Not sure what's happened to all the links, it all worked in my tests so something went pear shaped when transferred to the website.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
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Andyroo
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Re: Updated FAQ page.

Sat Sep 22, 2018 10:35 pm

No compute modules in the table of Pi models...
Need Pi spray - these things are breeding in my house...

DirkS
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Location: Essex, UK

Re: Updated FAQ page.

Sun Sep 23, 2018 9:04 am

jamesh wrote:
Sat Sep 22, 2018 10:28 pm
Not sure what's happened to all the links, it all worked in my tests so something went pear shaped when transferred to the website.
Somehow 'faqs' worked its way into the URL.

fbe
Posts: 466
Joined: Thu Aug 17, 2017 9:08 pm

Re: Updated FAQ page.

Sun Sep 23, 2018 9:43 am

If you look at the HTML source you will notice that a leading dot is missing.

hippy
Posts: 5360
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Location: UK

Re: Updated FAQ page.

Sun Sep 23, 2018 10:24 am

"What are the dimensions of the Raspberry Pi?" - No mention of size/weight of A+

jamesh
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Raspberry Pi Engineer & Forum Moderator
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Re: Updated FAQ page.

Sun Sep 23, 2018 10:47 am

fbe wrote:
Sun Sep 23, 2018 9:43 am
If you look at the HTML source you will notice that a leading dot is missing.
OK, nice easy fix but not sure why it worked earlier. No worries, its a quick fix Monday.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
"My grief counseller just died, luckily, he was so good, I didn't care."

hippy
Posts: 5360
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Location: UK

Re: Updated FAQ page.

Sun Sep 23, 2018 11:09 am

Not sure the "Typical bare-board active current consumption" figures always match with the "table comparing the amount of power drawn" figures.

That table is also fairly confusing; "Pi1 (B+)/ Pi2 B /Pi3 B (amps) / Zero (amps)" and doesn't seem to include all models. Perhaps that would be better with Pi per row, columns giving rating, Avg(Max) and in mA rather than A ...

Code: Select all

       Boot       Idle  Video      Stress

Pi B+  220(260)   200   220(300)   320(350)
Pi 2B  220(400)   220   280(360)   320(750)

hippy
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Location: UK

Re: Updated FAQ page.

Sun Sep 23, 2018 11:40 am

"four AA rechargeable batteries would provide 4.8V on a full charge" - Nope; some rechargeable AA's may hold more than 1.2V after charging and will deliver an out-of-spec voltage to the Pi.

I would just go for something simpler; "The Pi is not designed for operating directly from batteries. The battery voltage may be insufficient for correct and reliable operation or may be higher than allowed which may damage your Pi and other things connected to it".

"we do not recommend third-party PoE solutions; we've had many, many reports of unregulated voltage damaging users' hardware" -- Maybe but it jumps out at me as hyperbole and merely an effort to steer people to using an official product.

Just say "We recommend the official Raspberry Pi PoE HAT" and leave it at that. That avoids being called-out on the "many, many" allegation and being asked to name names, it looking exactly like hyperbole if one won't, and avoids libel action if a third party disagrees with what's being insinuated.

And it's probably best to avoid the issue of defective products when it comes to PoE accessories anyway.

hippy
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Location: UK

Re: Updated FAQ page.

Sun Sep 23, 2018 11:56 am

"You can still add a heatsink if you wish, and this may prevent thermal throttling by keeping the chips below the throttling temperature (see the paragraph on clock speed)" - What paragraph on clock speeds ? I couldn't find it and a"here" link would avoid having to search for that.

epoch1970
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Location: Paris, France

Re: Updated FAQ page.

Sun Sep 23, 2018 1:45 pm

Perhaps, an entry about µSD selection/budgeting?

There is a large difference in price between speed classes 4 and 10.
I think there is a noticeable difference in the performance of a Pi between 10/UI and 10/UIII.
When I started w/ the Pi I imagined class 4 would simply not work (e.g. timeout at boot), so I went for class 10-UI. Hopefully I already knew I didn't need a large card in the Pi itself.

- "Real-world" performance difference according to SD speeds
- Minimum spec recommended (I suspect Raspbian Lite/server tasks: class 4, Raspbian Desktop/interactive, multi-user tasks: class 10-UI)
- Why having a spare µSD is always a good idea: recovery, backup, project work...
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

bertlea
Posts: 265
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Location: Hong Kong

Re: Updated FAQ page.

Mon Sep 24, 2018 1:02 am

At: https://www.raspberrypi.org/documentati ... i-software

"WHY DOES CPUINFO REPORT I HAVE A BCM2835?" -->
...which use the bcm2836 and bcm283 respectively.
It is missing a "7" there. It should be:
...which use the bcm2836 and bcm2837 respectively.

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: Updated FAQ page.

Mon Sep 24, 2018 9:39 am

OK, have made the obvious corrections, but any suggestions that require larger rewrites I have left for the moment, as I just want to correct mistakes.

Website usually follows github changes after about an hour.

EDIT: OK, had another pass through and fixed even more links - I hope they are all correct now! Should all be live.
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
"My grief counseller just died, luckily, he was so good, I didn't care."

epoch1970
Posts: 3056
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Location: Paris, France

Re: Updated FAQ page.

Wed Oct 17, 2018 8:25 am

Is this one for the FAQ?
https://www.raspberrypi.org/forums/view ... &p=1381289

"How do I check my copy of the OS is genuine?"
"S'il n'y a pas de solution, c'est qu'il n'y a pas de problème." Les Shadoks, J. Rouxel

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bensimmo
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Re: Updated FAQ page.

Wed Oct 17, 2018 9:08 am

epoch1970 wrote:
Wed Oct 17, 2018 8:25 am
Is this one for the FAQ?
https://www.raspberrypi.org/forums/view ... &p=1381289

"How do I check my copy of the OS is genuine?"
I've never seen anyone ask that.

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
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Re: Updated FAQ page.

Wed Oct 17, 2018 9:39 am

bensimmo wrote:
Wed Oct 17, 2018 9:08 am
epoch1970 wrote:
Wed Oct 17, 2018 8:25 am
Is this one for the FAQ?
https://www.raspberrypi.org/forums/view ... &p=1381289

"How do I check my copy of the OS is genuine?"
I've never seen anyone ask that.
Me netiher, so not sure its 'frequently asked.'
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
"My grief counseller just died, luckily, he was so good, I didn't care."

hippy
Posts: 5360
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: Updated FAQ page.

Wed Oct 17, 2018 11:54 am

"Where's Mathematica gone?" - might be one to add.

I think there's only been one person on the forum asking that so far but I expect there will be more.

stevend
Posts: 209
Joined: Fri Oct 11, 2013 12:28 pm

Re: Updated FAQ page.

Wed Oct 17, 2018 12:34 pm

Apparently still available (although maybe only as a download):
https://www.theregister.co.uk/2018/10/1 ... thematica/

klricks
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Re: Updated FAQ page.

Wed Oct 17, 2018 1:01 pm

Wrong spelling of a word in this title:
Why does my Pi run at a slower clock speed that advertised?
Unless specified otherwise my response is based on the latest and fully updated Raspbian Buster w/ Desktop OS.

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