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by bertlea
Mon Jun 24, 2019 8:20 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 280
Views: 12543

Re: Raspberry Pi 4 Thread - general discussion

Thank you @jdb! I just found out the process is based on 28nm process too from the web. Nice to know it is not having soft-throttle as the P3B+.
by bertlea
Mon Jun 24, 2019 7:56 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 280
Views: 12543

Re: Raspberry Pi 4 Thread - general discussion

Before the complaints come in, that's a preliminary datasheet, a much more detailed ones is on its way. Yes, It will be nice to know more about the CPU, I cannot find the CPU model number. The document says the system will prevent SOC's temperature go above 85C degree, but when will it start thrott...
by bertlea
Mon Jun 24, 2019 6:53 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 280
Views: 12543

Re: Raspberry Pi 4 Thread - general discussion

@jamesh Thanks for your confirmation on Raspbian Buster is needed for Pi4. I just ordered one wth 4G RAM :D I hope by the time it arrives, I can see the Raspbian Buster link ready for me to download.
by bertlea
Mon Jun 24, 2019 6:16 am
Forum: General discussion
Topic: Raspberry Pi 4 Thread - general discussion
Replies: 280
Views: 12543

Re: Pi4 Thread - general discussion

Do the Pi4 need to run Raspbian Buster? I do not see the Raspbian Buster in Raspbian download page yet. The blog got a download link, but that just pointing to the existing Raspbian Stretch download page.
by bertlea
Mon Jun 24, 2019 3:37 am
Forum: Python
Topic: Sense Hat: using joy stick to call script?
Replies: 2
Views: 51

Re: Sense Hat: using joy stick to call script?

I tried to understand the logic of the code, but not successful as I don't have any experience of SenseHat. However, there is one thing I have some doubt if that is correct: Your array variable: "timer". Your code seems keep append "color codes" to this array in the function: time(), but it never be...
by bertlea
Mon Jun 24, 2019 1:40 am
Forum: Python
Topic: Pythonanywhere
Replies: 4
Views: 547

Re: Pythonanywhere

@Jadro, https://repl.it should allow you to run some kind of HTTP server code there and it exposes that to the public Internet. I have not tried Python with Flask, but I tried using Node.js in this way and it works. But your code should be visible to the public as well (using free account). I also f...
by bertlea
Tue Jun 04, 2019 5:03 am
Forum: General discussion
Topic: Good News for the Raspberry Pi!
Replies: 32
Views: 1572

Re: Good News for the Raspberry Pi!

Not sure if the foundation willing to let the future of Pi depends on gLinux instead of Raspbian. I guess it is not hard to think about what Android meant to Huawei.
by bertlea
Thu May 30, 2019 1:34 am
Forum: General discussion
Topic: FTDI USB Serial Device converter disconnects
Replies: 4
Views: 597

Re: FTDI USB Serial Device converter disconnects

Hi, I remember there were posts saying the default kernel (Raspbian?) only can take care 6 active USB devices at the same time. How many USB devices your system is connected and try to be active at the same time? Someone seems to able to build a customised kernel to resolve the problem. Not sure if ...
by bertlea
Wed May 29, 2019 7:40 am
Forum: Off topic discussion
Topic: Idea purposal for a safer ssh
Replies: 6
Views: 787

Re: Idea purposal for a safer ssh

I think that is a workable solution if you want to reduce the “brute force” login attempts. But the downside of this approach is you added an extra dependency of your ability to access your system remotely when you really needed. This is an “external dependency” that has more factors (more likely) t...
by bertlea
Thu May 23, 2019 3:06 am
Forum: Camera board
Topic: help with Picamera Module
Replies: 1
Views: 187

Re: help with Picamera Module

Code: Select all

import picamera
camera = picamera.PiCamera()
camera.capture('imageCaptured.jpg')
by bertlea
Tue May 21, 2019 8:25 am
Forum: Beginners
Topic: trying to build a raspberry pi 3b web server with nginx on Raspbian Stretch Lite
Replies: 1
Views: 67

Re: trying to build a raspberry pi 3b web server with nginx on Raspbian Stretch Lite

Lightweight is good, but Pi Pi3B is pretty powerful already for a web server, so you don’t need to worry too much on that at this stage. If you prefer Python as your programming language, try Flask, which is much lightweight than Django. If you want to use only one language, then consider Node.js as...
by bertlea
Tue May 21, 2019 1:42 am
Forum: General discussion
Topic: Combine Rpi with other low cost device for massive computing power
Replies: 5
Views: 376

Re: Combine Rpi with other low cost device for massive computing power

Current Raspberry Pi models only have USB2 and the article in your link mentioned why Pi didn’t work well with Coral Edge USB as the performance bottleneck is more about data rate. If you want to have many low-cost devices that can effectively use Coral Edge USB, then you should consider SBCs with U...
by bertlea
Tue May 14, 2019 6:29 am
Forum: General discussion
Topic: cool-retro-term issues
Replies: 1
Views: 90

Re: cool-retro-term issues

If you are trying to do it on Raspbian Stretch, then the PDF in the below link should work (at least on Pi-3B or 3B+).

https://github.com/rricharz/pidp11-2.11 ... r/Cool.pdf
by bertlea
Tue May 07, 2019 5:33 am
Forum: Beginners
Topic: will this adapter work
Replies: 8
Views: 318

Re: will this adapter work

If you want to have something proved to be working, then I suggest you consider the one below. It is already in micro-USB (so no extra converter needed) and it also got extra USB ports that I found useful for Pi-Zero/W. https://shop.pimoroni.com/products/three-port-usb-hub-with-ethernet-and-microb-c...
by bertlea
Thu May 02, 2019 8:51 am
Forum: Python
Topic: How to play audio file (Mp3) after start up using python script
Replies: 4
Views: 1048

Re: How to play audio file (Mp3) after start up using python script

...no display, keyboards attached
So what is your audio device? headphone connected to audio jack or a blue-tooth speaker?
by bertlea
Thu May 02, 2019 8:26 am
Forum: General discussion
Topic: Raspberry Pi 0 W and armv6
Replies: 33
Views: 5276

Re: Raspberry Pi 0 W and armv6

Hum.... node.js seems to have the same fate as Java now... Hope Python have better luck. For developing software that can last decades, we shall go back to use trusted C I guess.
by bertlea
Mon Apr 29, 2019 9:15 am
Forum: General discussion
Topic: Running Tone.js on Pi 3 A+
Replies: 2
Views: 101

Re: Running Tone.js on Pi 3 A+

If you want to have a single point of control instead of dealing with browser and a server separately, may be you can try to use puppeteer.js which let you have almost total control of the Chromium browser with node.js. You can even run the browser “headless” if you want. However, I never tried pupp...
by bertlea
Mon Apr 29, 2019 6:04 am
Forum: General discussion
Topic: Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)
Replies: 5
Views: 224

Re: Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)

Thank you @rpdom! If that is true, it is a very good news to me. Then all I need is to do is to upgrade all my Pi-ZeroW Raspbian from Jessie and Stretch to Buster when it is available in order to run the latest (v12) Node.js.
by bertlea
Mon Apr 29, 2019 3:38 am
Forum: General discussion
Topic: Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)
Replies: 5
Views: 224

Re: Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)

@fruitoftheloom, not sure why Debian can support 32-bit node.js v10.x when node.js is not officially supporting v10.x for 32-bit x86 for Linux. But anyway, the concern is more on node.js v.12.x as the armv6 is dropped for official support for v12.x. Because Pi1/Zero/ZeroW cannot run the armv7.
by bertlea
Fri Apr 26, 2019 9:19 am
Forum: General discussion
Topic: Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)
Replies: 5
Views: 224

Node.js status for Raspberry Pi 1/Zero/ZeroW and “Raspberry Pi Desktop for PC and Mac” (Debian x86)

Just realised there is an unofficial Node.js release project to keep maintaining older (downgraded) platforms. This should be meaningful to Pi 1/Zero/ZeroW users who uses Node.js and also want to keep the Node.js version up-to-date. It should also meaningful to “Raspberry Pi Desktop for PC and Mac” ...
by bertlea
Wed Apr 03, 2019 6:07 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: Backup Debian X86 to WinPC
Replies: 4
Views: 255

Re: Backup Debian X86 to WinPC

Assuming you do not have access to another system running Linux (including Raspberry Pi), and your PC got a FAT partition (or attached a separate disk in FAT format) with sufficient free space to store your backup (16G), then my workaround is: 1. Buy another 16GB USB drive and repeat the same proces...
by bertlea
Wed Apr 03, 2019 5:53 am
Forum: Python
Topic: Use pretrained model from tensorflow 1.7 on Raspberry Pi?
Replies: 3
Views: 476

Re: Use pretrained model from tensorflow 1.7 on Raspberry Pi?

Yes, I think the best way is to shrink the model size if that is feasible. Because the Pi can only access 1G RAM and need to share with GPU. The last thing you may try (but not recommended) is to set your swap file to a bigger size. But that will significantly affect the speed of your process and al...
by bertlea
Wed Apr 03, 2019 5:46 am
Forum: Raspberry Pi Desktop for PC and Mac
Topic: How to set screen brightness using existing buttons?
Replies: 2
Views: 199

Re: How to set screen brightness using existing buttons?

I also had the same need, on my Dell laptop, but not found a good solution. I end up just writing a script to adjust the brightness using a command in terminal. The script simply put the desired brightness value to the "file": /sys/class/backlight/intel_backlight/brightness I use a script as I found...
by bertlea
Wed Apr 03, 2019 5:31 am
Forum: Raspbian
Topic: Kernel logs with wrong priority level
Replies: 1
Views: 126

Re: Kernel logs with wrong priority level

Since it is related to the Kernel, I think you can try to raise to the Github:

https://github.com/raspberrypi/linux
by bertlea
Thu Mar 28, 2019 4:21 am
Forum: Troubleshooting
Topic: Do not buy this case, it has broken 2 brand new Pi 3 B+ devices
Replies: 9
Views: 943

Re: Do not buy this case, it has broken 2 brand new Pi 3 B+ devices

I do not think the BIQU case is good for Pi3B+ or newer Pi3B as they got taller SoC chip position as HawaiianPi mentioned. Because I do feel their heat transfer rod is long and thin. It already giving the original Pi3B some pressure. I guess they want to make sure the rod is pressing against the SoC...

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