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by Imperf3kt
Sat Jun 15, 2019 4:37 am
Forum: General discussion
Topic: Turn RPi 3 on with remote?
Replies: 13
Views: 348

Re: Turn RPi 3 on with remote?

Which reminds me, isn't there some HDMI protocol which can turn supported devices on and off when the TV is switched on and off? Could the Pi be configured to use this? Edit: I'm sure I was thinking of a different protocol, but HDMI CEC seems like it may work. https://en.wikipedia.org/wiki/Consumer_...
by Imperf3kt
Fri Jun 14, 2019 8:44 pm
Forum: General discussion
Topic: Turn RPi 3 on with remote?
Replies: 13
Views: 348

Re: Turn RPi 3 on with remote?

@hippy
W. H. Heydt's solution would presumably fix an unexpected reset and is admittedly, better than my own thoughts.

Still needs some more control though, seemingly.
I'll watch this thread to see what others come up with, it's an interesting idea.
by Imperf3kt
Fri Jun 14, 2019 8:36 pm
Forum: Beginners
Topic: Heat generation with raspbian and raspbian lite
Replies: 4
Views: 112

Re: Heat generation with raspbian and raspbian lite

You install a heatsink If in direct sunlight, this might have the opposite effect, instead of dissipating heat into the air, it could absorb heat from the sun and cook the Pi even hotter. Place a cover over the Pi, so it is in shade. If it is doing something that requires direct sunlight, Put the P...
by Imperf3kt
Fri Jun 14, 2019 8:32 pm
Forum: Beginners
Topic: Pi3B temperature between 70-75 ° C
Replies: 3
Views: 79

Re: Pi3B temperature between 70-75 ° C

It is pretty close to the recommended limit though. You might want to look into cooling it with a heatsink or similar, just so it doesn't throttle unexpectedly (to protect itself) and slow the system to a crawl.
by Imperf3kt
Thu Jun 13, 2019 9:52 pm
Forum: Beginners
Topic: Fans problem.
Replies: 4
Views: 106

Re: Fans problem.

If your case includes a fan control circuit based on temperature and it us turning your fans off, then that tells me you don't need the fans.
by Imperf3kt
Thu Jun 13, 2019 9:36 pm
Forum: Off topic discussion
Topic: 3B+ has some competition
Replies: 5
Views: 286

Re: 3B+ has some competition

The Pi has a lot of "competition"
https://en.wikipedia.org/wiki/Compariso ... _computers

Most of them fail in the support area.
by Imperf3kt
Thu Jun 13, 2019 12:55 am
Forum: General discussion
Topic: Turn RPi 3 on with remote?
Replies: 13
Views: 348

Re: Turn RPi 3 on with remote?

I assume OP is looking for a way to leave the Pi in "standby" mode for convenient on / off via a button on their remote control much like how your TV functions. You could probably just setup something that momentarily shorts the run pin to ground upon detecting a certain frequency. Maybe a transisto...
by Imperf3kt
Wed Jun 12, 2019 8:58 am
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 17
Views: 452

Re: irritating battery limits

I'm not sure if it's because I'm not using the correct words or what not, but that is exactly what I am referring to, PeterO - you must make sure the voltages are very close before parrallelling the batteries. I didn't mention disconnecting the batteries before charging them, nor did I suggest requi...
by Imperf3kt
Wed Jun 12, 2019 8:53 am
Forum: General discussion
Topic: Running an RPI outside?
Replies: 12
Views: 295

Re: Running an RPI outside?

Please don't worry about the 3d printed aspect of this, my tests have been completely water tight. Plus primer, several coats of paint, and several coats of polyurethane. It will be fine. What about the power supply though? Just thinking safety first here. Water ingress will destroy your Pi (and pr...
by Imperf3kt
Wed Jun 12, 2019 8:47 am
Forum: Graphics, sound and multimedia
Topic: Background Hiss from Audio jack
Replies: 10
Views: 288

Re: Background Hiss from Audio jack

I was actually suggesting you might have a ground loop. https://en.m.wikipedia.org/wiki/Ground_loop_(electricity) Cutting the ground on the 3.5mm jack won't help, and instead could make the matter worse. The reason why the noise changes with processor load would be because as the processor works har...
by Imperf3kt
Wed Jun 12, 2019 8:00 am
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 17
Views: 452

Re: irritating battery limits

@imperf3kt You'd better stick to areas where you know what you are talking about. Balancing is for rechargeable lithium cells in series. You must be careful when charging cells in parallell as well, if the voltages aren't close you will permanently damage one or more batteries in the parallell setu...
by Imperf3kt
Wed Jun 12, 2019 7:47 am
Forum: General discussion
Topic: Running an RPI outside?
Replies: 12
Views: 295

Re: Running an RPI outside?

...I was going to 3d print an enclosure... In my experience, 3D printing is far from weather proof. For one some plastics used in 3D printing are biodegradable in water, for another, the prints are never 100% infill, they're hollow, usually around 20% fill, meaning water can just pass right through.
by Imperf3kt
Tue Jun 11, 2019 7:43 pm
Forum: Graphics, sound and multimedia
Topic: Background Hiss from Audio jack
Replies: 10
Views: 288

Re: Background Hiss from Audio jack

So, for both of us, it seems our problem is the Pi causing interference on the PSU which is then making its way to the audio amp connected to the same PSU. Wouldn't that be the other way around? The amplifier is causing interference on the ground plane which is affecting the audio output on the Pi ...
by Imperf3kt
Tue Jun 11, 2019 7:38 pm
Forum: Automation, sensing and robotics
Topic: irritating battery limits
Replies: 17
Views: 452

Re: irritating battery limits

I am guessing the blue rectangle labelled 5v is a boost regulator? And the 'irrelevant control circuit' is a motor controller? You don't seem to have any battery balancing in place, just three Lipos connected in parallell. I would not recommend this, as it complicates matters. Better to stick to a s...
by Imperf3kt
Tue Jun 11, 2019 2:06 am
Forum: Raspbian
Topic: Enhanced graphics for Raspbian Lite
Replies: 11
Views: 305

Re: Enhanced graphics for Raspbian Lite

Looks like Droid Sans Mono font
https://en.wikipedia.org/wiki/Droid_fonts


I would have expected it to be Ubuntu font
https://en.wikipedia.org/wiki/Ubuntu_(typeface)
by Imperf3kt
Mon Jun 10, 2019 11:31 pm
Forum: Automation, sensing and robotics
Topic: Self-managing race car air suspension
Replies: 7
Views: 323

Re: Self-managing race car air suspension

As to the comments about "appropriateness of technology"? Pi is a platform to facilitate experimentation. Start here, prove out some use cases and pivot to specialized. If you try it in a race, perhaps figure out a way to keep the thing cool and pot the crap out of everything! I think you missed th...
by Imperf3kt
Mon Jun 10, 2019 10:58 pm
Forum: Troubleshooting
Topic: L298n frying my pi
Replies: 18
Views: 386

Re: L298n frying my pi

code_dude03 wrote:
Sat Jun 08, 2019 6:55 pm
the 5v terminal just had a jumper that i was considering using to power the pi through 5v pin but it was not in use when the pi died
For future reference, the 5v available from an L298N is not good enough to power a Pi.
by Imperf3kt
Mon Jun 10, 2019 10:42 pm
Forum: Beginners
Topic: Lights are on, but nobody's home??
Replies: 6
Views: 229

Re: Lights are on, but nobody's home??

There is one green and one red LED (only a single green LED on 0 models) You will not be able to tell by looking - when off they look identical. The green LED flashes whenever there is SD card activity, the red LED indicates power available and should never flash, if it does it indicates a low power...
by Imperf3kt
Sun Jun 09, 2019 9:36 pm
Forum: Compute Module
Topic: Waveshare board where do i begin?
Replies: 1
Views: 108

Re: Waveshare board where do i begin?

farmstar72 wrote:
Sat Jun 08, 2019 11:55 pm
Hi,
I just bought one of these boards.
Can you specify which product you are referring to? Waveshare sell a large variety of 'boards'

Are you referring to a CM IO board they make?
https://www.waveshare.com/compute-modul ... d-plus.htm
by Imperf3kt
Sun Jun 09, 2019 9:26 pm
Forum: Gaming
Topic: My Portable Retro Game Console with 7.9-inch display
Replies: 2
Views: 152

Re: My Portable Retro Game Console with 7.9-inch display

Looks neat, but I must ask why use an IPS display? IPS displays are more suited for color accuracy, and unless you're an artist, are not really of any benefit for playing retro games...
Seems an unnecessary expense in my opinion.
by Imperf3kt
Sun Jun 09, 2019 9:16 pm
Forum: General discussion
Topic: How do I keep my Pi clean?
Replies: 16
Views: 468

Re: How do I keep my Pi clean?

"compressed air" cans don't actually contain air at all, they contain an inert gas that is harmless in small quantities. Don't breathe it in if you can help it though. My personal solution to this issue is to cover the fan with two layers of ladies stockings/pantyhose. Stretch the material slightly,...
by Imperf3kt
Sun Jun 09, 2019 9:08 pm
Forum: General discussion
Topic: Packages installing in wrong folder in Raspberry pi 3
Replies: 5
Views: 213

Re: Packages installing in wrong folder in Raspberry pi 3

I always thought you had to CD into the installation directory before downloading and installing? (or move the file to the target directory before installing)
by Imperf3kt
Fri Jun 07, 2019 12:04 am
Forum: Troubleshooting
Topic: installing electrum fails on pyqt5
Replies: 4
Views: 209

Re: installing electrum fails on pyqt5

Have you considered using a virtualenvironment?
https://www.geeksforgeeks.org/creating- ... ows-linux/
by Imperf3kt
Thu Jun 06, 2019 4:56 am
Forum: General programming discussion
Topic: I wants LOLcodes!
Replies: 38
Views: 696

Re: I wants LOLcodes!

Is that really a LOLcode sample?
Simple might be your interpretation, but it's not what I'd use to describe it.

Still, people are free to use whatever they want. I don't think I'll be using it though, I'll stick to Python, as it looks easier to me.
by Imperf3kt
Wed Jun 05, 2019 11:42 pm
Forum: General discussion
Topic: How many 2.5" drives?
Replies: 19
Views: 563

Re: How many 2.5" drives?

You could cut the 5v trace running to the USB ports on the Pi itself. That way you could solder a single, sufficiently thick, wire in its place, plus a ground wire.

It's cumbersome, and voids your warranty, but probably your most compact option.

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