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by Imperf3kt
Wed Jul 10, 2019 9:54 pm
Forum: Advanced users
Topic: Extreme cooling for Raspberry Pi 3
Replies: 4
Views: 376

Re: Extreme cooling for Raspberry Pi 3

To be honest, it's been ages since I tried it. The moisture may well have been caused by some other factor. I never really fixed it, just pulled it apart and used a tiny fan and reasonably large heatsink. I've still got all the bits and some new parts too, was planning to see what it does on a Pi4b....
by Imperf3kt
Wed Jul 10, 2019 9:29 pm
Forum: Troubleshooting
Topic: SD card slot troubles
Replies: 3
Views: 110

Re: SD card slot troubles

An interim fix may be a large rubber band or sticky tac (a popular brand where I live is called 'blue tac') For a somewhat safer temporary fix, hot glue will also work. @HawaiianPi The power of deduction says it is most likely definitely a Pi3 model b I say this because it is a full size Pi, the SD ...
by Imperf3kt
Wed Jul 10, 2019 7:49 pm
Forum: General discussion
Topic: Pi4b J2 Run Global_En as power
Replies: 5
Views: 184

Re: Pi4b J2 Run Global_En as power

In case it needs to be noted, the third hole in the center is ground.
by Imperf3kt
Wed Jul 10, 2019 7:48 pm
Forum: General discussion
Topic: Reasoning behind dual Micro HDMI, and potential future alternatives?
Replies: 76
Views: 5814

Re: Reasoning behind dual Micro HDMI, and potential future alternatives?

For my (insane) tastes - the nicest solution would have been a full size on port 0 and a mini for port 1..... End of the world? nope - just means I now have 2 cables (USB-C and mini HDMI) which I (currently) can't use on any of my other equipment. All part of lifes' rich tapestry. Unfortunately, th...
by Imperf3kt
Wed Jul 10, 2019 12:06 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 287
Views: 56033

Re: Raspberry Pi 4 temperature

I think a solution for keeping the CPU cold, while having a HAT attached, is to design a "cooling HAT" between the Pi and the "useful" HAT stacked on to ! A thin blowing fan (like on laptop ones) on the "cooling HAT" could extract the hot air above the CPU and send it to one side, allowing a lower ...
by Imperf3kt
Wed Jul 10, 2019 7:09 am
Forum: General discussion
Topic: Underclocking and the RPi 4B?
Replies: 32
Views: 1311

Re: Underclocking and the RPi 4B?

My Pi4b2 averages 55°C and I use wifi exclusively (no point in gigabit ethernet when your internet connection maxes out at 7Mbit/s)
by Imperf3kt
Tue Jul 09, 2019 9:37 pm
Forum: Off topic discussion
Topic: Got too many raspberries?
Replies: 25
Views: 1385

Re: Got too many raspberries?

My collection is small in comparison. I have (in order of purchase): 1x Pi3b with ethernet removed I use this as a test Pi, for running programs and making scripts. Currently it is hooked up to an L298N motor driver. 1x dead ZeroW Spare parts. 1x Pi Zero I use this as an audio player. It has an ampl...
by Imperf3kt
Tue Jul 09, 2019 9:35 am
Forum: Automation, sensing and robotics
Topic: Adafruit Perma Proto Bonnet Mini confusion
Replies: 10
Views: 295

Re: Adafruit Perma Proto Bonnet Mini confusion

If anyone knows of a small mountable breadboard, I guess that is what I need instead. There's a breadboard case with Tcobbler (sold separately) available from ModMyPi https://core-electronics.com.au/modmypi-raspberry-pi-b-2-3-3b-breadboard-case.html Note that it is not Pi4b compatible ! (You'll pro...
by Imperf3kt
Tue Jul 09, 2019 9:23 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 287
Views: 56033

Re: Raspberry Pi 4 temperature

The only difference is that I can not blow in the case because there are no removable sides so I will reverse the fan and extract the hot air from the case. That will not work any better, you'll be trying to suck air out of what is essentially a poorly sealed vacuum. Try it yourself, take a plastic...
by Imperf3kt
Tue Jul 09, 2019 5:26 am
Forum: Automation, sensing and robotics
Topic: Adafruit Perma Proto Bonnet Mini confusion
Replies: 10
Views: 295

Re: Adafruit Perma Proto Bonnet Mini confusion

In my experience, such holes are storage positions where unused components can safely be kept until required so as not to lose them.

On this product they appear to be just ordinary protoboard holes.
by Imperf3kt
Tue Jul 09, 2019 3:58 am
Forum: Troubleshooting
Topic: Raspberry Pi 4 temperature
Replies: 287
Views: 56033

Re: Raspberry Pi 4 temperature

Slight problem with "taking the top off an official Pi4 case" - you can't. It's designed in such a way that removing the top disassembles the entire case. It comes in two parts and both are required to secure the Pi.
by Imperf3kt
Tue Jul 09, 2019 3:40 am
Forum: General discussion
Topic: Underclocking and the RPi 4B?
Replies: 32
Views: 1311

Re: Underclocking and the RPi 4B?

47°C is also very hot. Record breaking hot. It would be on the news if somewhere reached that temperature, such as Sydney, Australia last year recording the hottest temperature recorded in an urban area on the planet - 47.3°C https://www.smh.com.au/environment/weather/sydney-clocks-the-hottest-place...
by Imperf3kt
Tue Jul 09, 2019 12:24 am
Forum: General discussion
Topic: Heatsinks official for rpi 4 ?
Replies: 43
Views: 3213

Re: Heatsinks official for rpi 4 ?

I was implying that it doesn't (anymore) make a Pi3b crash, as had been stated.

I wasn't discussing it's accuracy
by Imperf3kt
Mon Jul 08, 2019 11:50 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 Power issue
Replies: 4
Views: 150

Re: Raspberry Pi 3 Power issue

Are both running the same OS or is one older (possibly pre-dating the release of your Pi?) The OP clearly states he tried just swapping the pi's I have tried swapping boards with same peripherals (hdmi cable to tv, network cable, power adapter, and sd card). So that should rule out it being the OS ...
by Imperf3kt
Mon Jul 08, 2019 11:40 pm
Forum: General discussion
Topic: RPI FRYING UP JUMPERS
Replies: 3
Views: 292

Re: RPI FRYING UP JUMPERS

I'm curious what you mean by frying.
"jumper" wires are typically 24AWG, which should handle the ~2.5A a short would pull on a Pi.
I would expect the polyfuse to blow first.
by Imperf3kt
Mon Jul 08, 2019 10:56 pm
Forum: General discussion
Topic: Power Supply for multiple RAPI4B+
Replies: 7
Views: 371

Re: Power Supply for multiple RAPI4B+

Use something like this
https://au.element14.com/mean-well/rs-2 ... dp/2816014

Note, this is the first Google result I got by searching "5v psu", it is only rated 5A, so is merely to show what to use, not a suggestion.
by Imperf3kt
Mon Jul 08, 2019 10:40 pm
Forum: General discussion
Topic: Heatsinks official for rpi 4 ?
Replies: 43
Views: 3213

Re: Heatsinks official for rpi 4 ?

If size isn't an issue but absolute performance is then this active solution would take some beating.. https://www.seeedstudio.com/ICE-Tower-CPU-Cooling-Fan-for-Raspberry-pi-Support-Pi-4-p-4097.html I think it's safe to say this isn't compatible with the official Pi 4 case! What's holding that on!?...
by Imperf3kt
Mon Jul 08, 2019 9:51 pm
Forum: Beginners
Topic: cooling for RPi4
Replies: 9
Views: 756

Re: cooling for RPi4

A fan to the Pi power supply is self defeating All you are doing is increasing the Pi current If you must have a fan use a separate power Supply, Regards BoyOh Not true in the slightest, please don't spread misinformation. A fan will only draw a tiny current but move a lot of air and result in a co...
by Imperf3kt
Mon Jul 08, 2019 9:40 pm
Forum: Off topic discussion
Topic: OMG - I can't believe I did this
Replies: 11
Views: 714

Re: OMG - I can't believe I did this

I've never accidentally formatted a hard drive, but I did once destroy one I decided it was time to backup my 1.5TB WD green because it was a pile of crap. I went out and bought a reliable 2TB Seagate Barracuda. After setting everything up and beginning the transfer, I say impatiently and watched th...
by Imperf3kt
Mon Jul 08, 2019 9:10 pm
Forum: Advanced users
Topic: RaspberryPi 4: heatsink or fan
Replies: 34
Views: 6729

Re: RaspberryPi 4: heatsink or fan

So after getting around to setting up my Pi4b (2GB) I'm not sure a fan is necessary for most users. I ran Chromium on fullscreen for 30 minutes with a 1080p video playing and the Pi in free air never reached above 63°C, most of the time it sat around 53°C. I am running a non-updated Raspbian Buster....
by Imperf3kt
Sun Jul 07, 2019 10:19 pm
Forum: Troubleshooting
Topic: Raspberry Pi 3 Power issue
Replies: 4
Views: 150

Re: Raspberry Pi 3 Power issue

Are both running the same OS or is one older (possibly pre-dating the release of your Pi?)
by Imperf3kt
Sun Jul 07, 2019 3:34 am
Forum: Beginners
Topic: cables for raspberry pi
Replies: 3
Views: 145

Re: cables for raspberry pi

HawaiianPi wrote:
Sun Jul 07, 2019 1:51 am
drgeoff wrote:
Sat Jul 06, 2019 11:58 pm
There wasn't room on the Zero for the same size socket as had been selected for the previous RPi models...
So the Pi Zero takes a special cable that's narrower on the Pi end.
I think the OP realises this and is asking why the Pi4 didn't make use of the smaller connector.
by Imperf3kt
Sat Jul 06, 2019 1:36 am
Forum: General discussion
Topic: Should I wait for the next revision of the pi 4
Replies: 40
Views: 2179

Re: Should I wait for the next revision of the pi 4

The Elpida logo isn't on the CPU (actually an SOC), it's on the RAM chip, which is mounted on top of the SOC. The earlier post about the Pi3 CPU and GPU being visible, one of those is an SOC which has both CPU and GPU in it. The other big black chip near the USB is not a GPU, but a USB/ethernet hub ...
by Imperf3kt
Fri Jul 05, 2019 1:11 am
Forum: General discussion
Topic: Should I wait for the next revision of the pi 4
Replies: 40
Views: 2179

Re: Should I wait for the next revision of the pi 4

The pi5b has apparently already been started on.

Let's wait until it comes out before speculating on it.

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