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by Imperf3kt
Thu Sep 07, 2017 10:11 pm
Forum: Off topic discussion
Topic: Industrial rated PI equivalent boards
Replies: 26
Views: 23896

Re: Industrial rated PI equivalent boards

People have stuck Pis in a freezer, they work fine so long as you watch out for condensation and don't mind destroying your batteries.
by Imperf3kt
Thu Sep 07, 2017 9:57 pm
Forum: General discussion
Topic: Battery concerns
Replies: 4
Views: 860

Re: Battery concerns

No chance of fire, but there is a chance that it will never hold charge again.

If you drain the battery to dead, lipos don't like that.

Now, if something heavy fell on it or pierced it, then you'd have a fire risk.
by Imperf3kt
Thu Sep 07, 2017 3:55 am
Forum: Off topic discussion
Topic: SanDisk’s New Memory Card Lets Store a Record 400GB of Data
Replies: 1
Views: 1050

Re: SanDisk’s New Memory Card Lets Store a Record 400GB of Data

Hardly surprising given the format supports a maximum of 2TB and last year they unveiled a 1TB SDXC model
https://petapixel.com/2016/09/20/sandis ... sdxc-card/
by Imperf3kt
Wed Sep 06, 2017 10:14 pm
Forum: Beginners
Topic: Noob question about speed
Replies: 4
Views: 525

Re: Noob question about speed

Try thr Epiphany web browser, I've found it far better than Chromium.
by Imperf3kt
Wed Sep 06, 2017 10:11 pm
Forum: General discussion
Topic: Raspberry Pi 3 and automotive uses
Replies: 3
Views: 881

Re: Raspberry Pi 3 and automotive uses

Also note that a car may have a 12v battery, but once you start the engine and the alternator kicks in, the voltage increases to 14.4v
by Imperf3kt
Wed Sep 06, 2017 9:13 am
Forum: Troubleshooting
Topic: Pi bricked or dead?
Replies: 34
Views: 3691

Re: Pi bricked or dead?

A note about using alcohol to clean the contacts:
Make sure it is rubbing alcohol and not drinking alcohol as the latter has sugar in it which is not a good thing to clean with.
by Imperf3kt
Mon Sep 04, 2017 10:45 pm
Forum: Advanced users
Topic: desoldering USB
Replies: 15
Views: 2424

Re: desoldering USB

....However, to avoid this in its entirety, is it possible to buy or arrange to buy an RPi3 without these parts installed at all? There is a custom order service from the RPi manufacture: https://www.element14.com/community/docs/DOC-76955/l/raspberry-pi-customization-service Note that the minimum o...
by Imperf3kt
Mon Sep 04, 2017 9:53 pm
Forum: Advanced users
Topic: desoldering USB
Replies: 15
Views: 2424

Re: desoldering USB

How about just using USB extension cables ? 25cm Dual USB 2.0 A female socket panel mount to 2 USB A male extension cable https://www.amazon.co.uk/dp/B00NIH1PZ6/ref=cm_sw_r_cp_api_LTqRzbD80A58N I'm trying to make the board smaller, but thanks for the suggestion anyway. drgeoff, as I understand it, ...
by Imperf3kt
Mon Sep 04, 2017 2:00 am
Forum: Troubleshooting
Topic: Raspberry PI3 B+ overheating
Replies: 9
Views: 3618

Re: Raspberry PI3 B+ overheating

I wonder what people using HATs do about cooling? I'm going to be running a small neural network on the Pi, and stick a HAT on it for controlling motors and stuff; I don't know how the chips will get cooled in this case, and the NN will use most of the cores with high utilization... https://i.imgur...
by Imperf3kt
Mon Sep 04, 2017 1:40 am
Forum: Advanced users
Topic: desoldering USB
Replies: 15
Views: 2424

desoldering USB

I found many threads via googling, but nothing was very clear so I was hoping for an answer from an engineer. What I aim to do is completely remove all four USB A ports and replace them with 2.54mm pins. Two of the ports (by means of a header) would be repositioned inside a case with the remaining t...
by Imperf3kt
Mon Sep 04, 2017 12:30 am
Forum: Beginners
Topic: Raspbian Stretch not 64bit?
Replies: 35
Views: 19766

Re: Raspbian Stretch not 64bit?

Thank you all for the patient explanations. That cleared up a few misconceptions of mine.
by Imperf3kt
Sun Sep 03, 2017 11:22 pm
Forum: Troubleshooting
Topic: Raspberry PI3 B+ overheating
Replies: 9
Views: 3618

Re: Raspberry PI3 B+ overheating

Woops, you are right. Not sure why I called it mosfet, it is BJT.
Brain fart?
by Imperf3kt
Sun Sep 03, 2017 11:00 pm
Forum: Beginners
Topic: Raspbian Stretch not 64bit?
Replies: 35
Views: 19766

Re: Raspbian Stretch not 64bit?

I understand it is a lot more work that "simply optimise it" but wouldn't it be more appropriate to focus efforts on improving the future of the Pi rather than supporting deprecated devices indefinitely? Those devices will still work, just won't get further updates / fixes. And the older Pis are onl...
by Imperf3kt
Sun Sep 03, 2017 10:04 pm
Forum: General discussion
Topic: understanding sound and amps
Replies: 17
Views: 5365

Re: understanding sound and amps

So most of the I2S DACs don't seem to have an amp with them it only seems to be the MAX98357A that is both a DAC and amp all in 1 then. So something like this will be good for most small stereo speakers http://www.ebay.com.au/itm/2PCS-PAM8403-Audio-Module-2-Channel-Digital-USB-Power-Class-D-Amplifi...
by Imperf3kt
Sun Sep 03, 2017 9:50 pm
Forum: Beginners
Topic: Raspbian Stretch not 64bit?
Replies: 35
Views: 19766

Re: Raspbian Stretch not 64bit?

Providing a 64 bit OS would mean there would be 2 variations of the OS and many applications would also have to have a 32 bit and 64 bit version to get the performance you are expecting. This may add some confusion to owners of older Pis that are 32 bit. This move would almost double the amount of ...
by Imperf3kt
Sun Sep 03, 2017 9:28 pm
Forum: Troubleshooting
Topic: Raspberry PI3 B+ overheating
Replies: 9
Views: 3618

Re: Raspberry PI3 B+ overheating

You can use pin 12 or 18 for controlling fan speed as those are the PWM GPIO headers. DO NOT plug the fan into these pins, only a transistor. Power the fan via the 5v pin only. There are several guides on the forums or Google, but in short you need some code to work it as well. You'll also require a...
by Imperf3kt
Sat Sep 02, 2017 5:51 am
Forum: Troubleshooting
Topic: STICKY: Bluetooth not working after update - need info
Replies: 163
Views: 154322

Re: STICKY: Bluetooth not working after update - need info

This is really starting to enrage me, but I'll try to keep it civil. Sometimes bluetooth works flawlessly, but if I leave my bluetooth keyboard idle too long, it disconnects as a battery saving feature. It will never connect again until I restart. I could live with that, annoying as it was, but I ju...
by Imperf3kt
Sat Sep 02, 2017 5:16 am
Forum: Troubleshooting
Topic: Pi bricked or dead?
Replies: 34
Views: 3691

Re: Pi bricked or dead?

Bricked is just that, a device that has (by whatever means) been made as useful as a brick. It serves no purpose now other than as a paper weight. In any case, does the exact terminology matter? Whats more important, fussing over what to call a broken device, or finding out if the device even is bro...
by Imperf3kt
Sat Sep 02, 2017 5:11 am
Forum: Off topic discussion
Topic: Suggestions for new pi
Replies: 17
Views: 2562

Re: Suggestions for new pi

I know this is kinda pointless, but personally if the Pi3B was available with TWO usb ports and no ethernet so it can be slimmer, I'd buy it.
by Imperf3kt
Sat Sep 02, 2017 4:55 am
Forum: Advanced users
Topic: pi psu with 3 metre cable
Replies: 12
Views: 1577

Re: pi psu with 3 metre cable

And? As long as you don't draw more than 2400w you can daisychain 50 extensions if you want. Actually, that is not a good idea. But one extra extension for about 10W is not a problem, and will make it far easier to avoid voltage losses. Mind explaining why? My uncle was an electrician and always di...
by Imperf3kt
Sat Sep 02, 2017 4:52 am
Forum: Beginners
Topic: Powering up Pi 3 using a power bank
Replies: 29
Views: 21863

Re: Powering up Pi 3 using a power bank

We all make mistooksmistakes, especially typing late at night -- I always try to read what I post in preview but even then errors get through. (I caught at least two typos in this reply -- how many got through?) I can't see any typos, but even though Wh may be independent of voltage, it will be aff...
by Imperf3kt
Fri Sep 01, 2017 12:20 am
Forum: Beginners
Topic: Which pins should I plug a fan into?
Replies: 7
Views: 2268

Re: Which pins should I plug a fan into?

pcmanbob wrote:
Wed Aug 30, 2017 5:38 pm
You will only get a small fan in the case any way. So as long as it's 5v a small fan would not over load any thing.
It will if you try to run it off anything other than the 5v or 3.3v pins
At 3.3v though, I expect a fan won't even spin without help.
by Imperf3kt
Thu Aug 31, 2017 10:48 pm
Forum: Beginners
Topic: Powering up Pi 3 using a power bank
Replies: 29
Views: 21863

Re: Powering up Pi 3 using a power bank

I have a 12,000 mAh power bank rated for 44.4wh @3.3v Haven't fully tested it, but with a 0.6A screen attached and 3W amplifier also drawing from the same battery pack, I have previously seen over two hours of use and hadn't reached less than 75% capacity Don't be fooled by the super high mAh rating...
by Imperf3kt
Thu Aug 31, 2017 10:42 pm
Forum: Advanced users
Topic: pi psu with 3 metre cable
Replies: 12
Views: 1577

Re: pi psu with 3 metre cable

And? As long as you don't draw more than 2400w you can daisychain 50 extensions if you want.
by Imperf3kt
Tue Aug 15, 2017 4:58 am
Forum: Gaming
Topic: Recommended OS for games
Replies: 13
Views: 6335

Re: Recommended OS for games

RetroPi is software, not an OS

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