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by Imperf3kt
Fri Jul 19, 2019 9:26 am
Forum: General discussion
Topic: is JB weld good idea to attach HeatSink to 4b ?
Replies: 6
Views: 229

Re: is JB weld good idea to attach HeatSink to 4b ?

Compounds that don't conduct electricity are essential in many cases. Perhaps one can get away with sparing amounts of such things under a Pi heatsink but I would not want to be slopping conductive gloop over the board. Best stay away from most thermal paste/grease then, most of the better ones are...
by Imperf3kt
Fri Jul 19, 2019 9:20 am
Forum: General discussion
Topic: Power Supply - Type C of Pi 4 model B
Replies: 14
Views: 663

Re: Power Supply - Type C of Pi 4 model B

... - power the Pi via the GPIO header, 5v pin/s and ground, or potentially the PoE header, if it can be leveraged for such use. The PoE header doesn't carry 5v - it takes power from the ethernet socket and passes it to the PoE HAT, which then powers the Pi through the GPIO header. Ah right, I misu...
by Imperf3kt
Fri Jul 19, 2019 8:00 am
Forum: General discussion
Topic: Power Supply - Type C of Pi 4 model B
Replies: 14
Views: 663

Re: Power Supply - Type C of Pi 4 model B

Step one: buy USB-C cable, commercial one. Step two: cut cable Step three: Identify which of the dozens of wires inside are 5v, ground and possibly D+, D- if you plan to use gadget mode. Step four: clumsily attempt to connect the wires to your power supply Step five: fail miserably and just take the...
by Imperf3kt
Fri Jul 19, 2019 1:34 am
Forum: General discussion
Topic: is JB weld good idea to attach HeatSink to 4b ?
Replies: 6
Views: 229

Re: is JB weld good idea to attach HeatSink to 4b ?

Jb weld has decent thermal properties, but do not get it anywhere except on the top of the CPU (it contains iron, so can very easily create short circuits) Also note that if you mount your Pi on its edge, and a large heatsink has been "JB welded" in place with nothing else securing it, the weight co...
by Imperf3kt
Thu Jul 18, 2019 10:30 pm
Forum: Networking and servers
Topic: How to fry an XboxOne?
Replies: 8
Views: 161

Re: How to fry an XboxOne?

I'm going to assume that of the nine tenants, only you are supposed to be connecting to this router?
by Imperf3kt
Thu Jul 18, 2019 10:28 pm
Forum: Off topic discussion
Topic: 1TB microSD Card is real!
Replies: 16
Views: 445

Re: 1TB microSD Card is real!

mahjongg wrote:
Thu Jul 18, 2019 2:12 pm
If you have such a large video collection, its more efficient/cheap to spread it over *several* SD-cards.
And a better idea in general.
Should you lose one of the cards, you don't lose your entire collection.
by Imperf3kt
Thu Jul 18, 2019 10:22 pm
Forum: Off topic discussion
Topic: Something I'd like to see.
Replies: 17
Views: 512

Re: Something I'd like to see.

A keyboard and mouse take next to no R&D, so it's simply a case of produce sell and profit, but this suggestion is different, it would require research and budget.
by Imperf3kt
Thu Jul 18, 2019 11:15 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 275
Views: 51783

Re: Raspberry Pi 4 temperature

Somebody has done a neat review/comparison on the newly released ice tower cooler linked earlier in the thread
https://www.youtube.com/watch?v=RyUXC3886Ic
by Imperf3kt
Thu Jul 18, 2019 4:45 am
Forum: Beginners
Topic: i have a tight buget. is the pi 3 worth buying or should i just buy the 4
Replies: 24
Views: 615

Re: i have a tight buget. is the pi 3 worth buying or should i just buy the 4

While not particularly recommended, not every charger is terrible. I've been powering my Pi4b via both the official Pi3 power supply and a random high quality 4.8A (2x2.4A) usb wall wart, with micro usb to usb c adaptor. In both cases, I've yet to see an undervolt warning. Granted, my use so far has...
by Imperf3kt
Thu Jul 18, 2019 4:25 am
Forum: Off topic discussion
Topic: 1TB microSD Card is real!
Replies: 16
Views: 445

Re: 1TB microSD Card is real!

Local online retailers seem to want about eighty cents per gigabyte for them. In comparison, a standard 1TB HDD will set you back five cents per gigabyte, getting cheaper as you scale up with 4TB costing just 2.5 cents/gb! Source: https://www.guru3d.com/news-story/decline-price-per-gb-for-hdds-comes...
by Imperf3kt
Thu Jul 18, 2019 4:17 am
Forum: General discussion
Topic: Raspberry Pi Zero W Power Abbilities
Replies: 5
Views: 199

Re: Raspberry Pi Zero W Power Abbilities

BRETT_No5 wrote:
Thu Jul 18, 2019 3:20 am
Pi is powered by a 2.4A USB. I don't know what that means for my LEDs but I am sure I'll find out.
It means you have 12W less resistances to power both a Pi0W (~150mA, ~0.75W) and your LEDs, assuming the power supply is accurately providing 2.4A at 5v
by Imperf3kt
Thu Jul 18, 2019 1:04 am
Forum: Off topic discussion
Topic: Something I'd like to see.
Replies: 17
Views: 512

Re: Something I'd like to see.

hippy wrote:
Thu Jul 18, 2019 12:44 am
A decent and capable USB to SATA bridge would probably be of most benefit to people.
Of course, but is it something the raspberry pi foundation should be focusing on?
by Imperf3kt
Wed Jul 17, 2019 10:13 pm
Forum: Beginners
Topic: i have a tight buget. is the pi 3 worth buying or should i just buy the 4
Replies: 24
Views: 615

Re: i have a tight buget. is the pi 3 worth buying or should i just buy the 4

And the question itself makes no sense, they're all at the same price... Ah well, maybe someone will want to expound on the compared TCO of Pi3 and Pi4, including energy and accessories costs... :D No, they're not really, at least not once you factor in necessary accessories. But that depends on on...
by Imperf3kt
Wed Jul 17, 2019 10:00 pm
Forum: Off topic discussion
Topic: Something I'd like to see.
Replies: 17
Views: 512

Re: Something I'd like to see.

This isn't likely to happen.

I'd instead ask a 3rd party to begin a kickstarter campaign or similar.
by Imperf3kt
Wed Jul 17, 2019 9:39 pm
Forum: General discussion
Topic: Pi 4 Max Size & Fastest Supported MSDCard?
Replies: 12
Views: 392

Re: Pi 4 Max Size & Fastest Supported MSDCard?

Thank you everyone for the great replies! I have a 128gb Evo in my 3 B+ and it works well, I've tried a few other 64gb and 128gb cards and they fail to boot the Pi. I can't wait to get my Pi4 when the 4gb ones ship in August. As always, when buying large storage media, you should always perform a t...
by Imperf3kt
Tue Jul 16, 2019 9:21 am
Forum: General discussion
Topic: SanDisk A2 mode support - worthless, waste of money
Replies: 15
Views: 796

Re: SanDisk A2 mode support - worthless, waste of money

That's contrary to other replies from SanDisk I've read where the A# series was the recommended storage device for a Raspberry Pi.

Currently, tests performed by forum members point to A1 being the best card to use with A2 potentially performing worse due to requiring specialised peripherals.
by Imperf3kt
Tue Jul 16, 2019 5:30 am
Forum: Troubleshooting
Topic: [Solved] New Raspberry 4b 4g dead upon arrival
Replies: 17
Views: 705

Re: New Raspberry 4b 4g dead upon arrival

Forgot to mention to check that the microHDMI was fully inserted. When I first plugged mine in, it felt like it was all the way in, but wasn't, I kept pushing and then it clicked in.
by Imperf3kt
Tue Jul 16, 2019 2:19 am
Forum: Troubleshooting
Topic: [Solved] New Raspberry 4b 4g dead upon arrival
Replies: 17
Views: 705

Re: New Raspberry 4b 4g dead upon arrival

When you say blinks for a while, i
You don't mean a pattern of four flashes, do you?
by Imperf3kt
Tue Jul 16, 2019 1:24 am
Forum: General discussion
Topic: Pi 4 PCB Defect? (fiberglass thread loose)
Replies: 15
Views: 955

Re: Pi 4 PCB Defect? (fiberglass thread loose)

From the description of what it actually is, I suspect a light touch with a fine file would clean it up nicely. I second this. My Pi4b came with a rather rough edge (I stabbed myself with mine) Just rub it back with something flat to break loose any large burrs and then hit it (gently) with some fi...
by Imperf3kt
Mon Jul 15, 2019 11:51 pm
Forum: Automation, sensing and robotics
Topic: 'Uninteruptible' Power Supply
Replies: 2
Views: 105

Re: 'Uninteruptible' Power Supply

From your description, you have constructed an explosive / fire.
This is how I interpret your description
Image

Please post images of your circuit and any additional info about it, nobody here can help without it.
by Imperf3kt
Mon Jul 15, 2019 10:41 pm
Forum: Graphics, sound and multimedia
Topic: How to send a sound signal through gpio pin to speaker?
Replies: 7
Views: 181

Re: How to send a sound signal through gpio pin to speaker?

LTolledo wrote:
Mon Jul 15, 2019 9:47 pm
What RPi model you are using?

most RPi Boards have audio jacks where you can connect any audio amp
The OP doesn't want audio playback, they want to generate tones and buzzes etc.
by Imperf3kt
Mon Jul 15, 2019 9:50 pm
Forum: General discussion
Topic: Usefull / good programs to have on your Pi
Replies: 22
Views: 924

Re: Usefull / good programs to have on your Pi

The only program I install on top of a Raspbian desktop is renpy.
Unfortunately the one in the repos is very outdated / experimental, so I must compile it from source myself.

Raspbian has everything else I need.
by Imperf3kt
Mon Jul 15, 2019 3:20 am
Forum: General discussion
Topic: Pi 4 PCB Defect? (fiberglass thread loose)
Replies: 15
Views: 955

Re: Pi 4 PCB Defect?

A photo and perhaps description would be better.
In that video, at the 50 second mark, I see no defect.
by Imperf3kt
Sun Jul 14, 2019 10:20 pm
Forum: Automation, sensing and robotics
Topic: Power small motor (directly) from PI 5V
Replies: 4
Views: 179

Re: Power small motor (directly) from PI 5V

As I have answered this on similar topics you can power the motor directly from RPi's 5v one speed, one direction, and one time only! after that your RPi is K.I.A or R.i.P. What kills the Pi? As far as I see, you are merely connecting a motor ditectly to a current source. If the motor draws too muc...
by Imperf3kt
Sat Jul 13, 2019 9:45 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 275
Views: 51783

Re: Raspberry Pi 4 temperature

Gave this a try yesterday.
https://i.imgur.com/6U0YAxF.jpg (8MB image)

Fan running directly from one of the Pi's USB ports.
Managed to keep it around 29°C

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