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by bjtheone
Thu Sep 12, 2019 12:36 pm
Forum: General discussion
Topic: RPI 4 USB-C supply
Replies: 32
Views: 3275

Re: RPI 4 USB-C supply

Actually the whole point of rigorous standards, such as USB, USB 2.0, USB 3.0, and USB C, is to provide interoperability between vendors. A good thing, no? Why wouldn't I buy a RFP/RPT power supply for each Pi? Because I've already got plenty of 5V supplies sitting around doing nothing. Many of the...
by bjtheone
Wed Sep 11, 2019 1:17 am
Forum: Advanced users
Topic: Industrial pi
Replies: 9
Views: 852

Re: Industrial pi

Well it completely depends on what he is trying to do and what sort of uptime/reliability he desires. I have seen fairly generic commercial PC motherboards embedded in high end laser engravers, with said PCs running Windows 10. We are talking pieces of kit running upwards of 1.5 million USD. Not wh...
by bjtheone
Mon Sep 09, 2019 8:14 pm
Forum: Beginners
Topic: laser range finder accuracy
Replies: 8
Views: 543

Re: laser range finder accuracy

Do the math and see if the accuracy of your range finder gets you a good enough answer. I suspect that the accuracy of your range finder and your imu will be such that your concept will not be particularly accurate. This is based on work I have been involved with on FRC teams. Building targeting sys...
by bjtheone
Mon Sep 09, 2019 7:29 pm
Forum: General discussion
Topic: Good reasons to buy the latest Rpi 4 with 4G RAM?
Replies: 34
Views: 4272

Re: Good reasons to buy the latest Rpi 4 with 4G RAM?

If you are interested in using the Pi as a desktop I would get the 4 GB model. If you are unsure what you want to do I would get the 4 GB model. If you have a specific use case that is really and truly expected to last the entire expected lifespan of the Pi and you are really really sure I would buy...
by bjtheone
Mon Sep 09, 2019 5:09 pm
Forum: Advanced users
Topic: Industrial pi
Replies: 9
Views: 852

Re: Industrial pi

TBH - I think a lot of these questions are way over the free forum here and need professional engineers (apologies to those who frequent here) rather than free advice. Well it completely depends on what he is trying to do and what sort of uptime/reliability he desires. I have seen fairly generic co...
by bjtheone
Mon Sep 09, 2019 12:09 pm
Forum: General discussion
Topic: RPI 4 USB-C supply
Replies: 32
Views: 3275

Re: RPI 4 USB-C supply

USB C issue is that the 4B does not have the appropriate resistor to fully implement the USB C "device type" part of the spec. Due to this smart chargers, that can supply greater than 5V don't know what it wants. Unfortunately various vendors have tacked their own fast charging extensions on and may...
by bjtheone
Sat Sep 07, 2019 7:19 pm
Forum: Raspberry Pi OS
Topic: Linux pipe command to copy
Replies: 2
Views: 313

Re: Linux pipe command to copy

It looks like that command transforms the encoding. What does it output upon successful completion? To clarify the pipe command "|" allows you to redirect stdout from the terminal to the input of the next command in the pipeline, For this to work the information must be provided to stdout. Likely a ...
by bjtheone
Sat Sep 07, 2019 7:01 pm
Forum: Raspberry Pi OS
Topic: Raspberry pi 4B 4GB doesn`t detectLogitech unifying dongle after upgrade
Replies: 4
Views: 447

Re: Raspberry pi 4B 4GB doesn`t detectLogitech unifying dongle after upgrade

I have a 4B 4GB with at USB 3.0/SATA SSD and fast USB3.0 USB stick on the USB 3.0 ports and two USB receivers on the 2.0 ports (I like the Microsoft media keyboard and Logitech MX Master mouse). Works fine either connected via ethernet to my router or via WiFi. Said router is a DLink DIR-860L which ...
by bjtheone
Sat Sep 07, 2019 5:59 pm
Forum: General discussion
Topic: piDS
Replies: 8
Views: 476

Re: Raspberry Pi MATE Setup Script

Given that folks really need to learn about apt or apt-get to maintain their Linux install perhaps a tutorial of how to install Mate with explanation of what they are installing and why is more appropriate.
by bjtheone
Fri Sep 06, 2019 8:42 pm
Forum: Advanced users
Topic: Network boot over WiFi
Replies: 19
Views: 2109

Re: Network boot over WiFi

That's true, but booting the device opens up a whole different can of worms, since absolutely everything is coming over the wifi. WPA is "broken" now, and most WPA2 can be cracked reasonably easily as well. Care to elaborate. Assuming a robust password, WPA is not easily "broken" and WPA2 is even w...
by bjtheone
Fri Sep 06, 2019 8:12 pm
Forum: Troubleshooting
Topic: buster on pi3b+ root locked after faulty fstab edit
Replies: 10
Views: 626

Re: buster on pi3b+ root locked after faulty fstab edit

In short no. If you are mounting the potentially messed up SD card on another computer, you are root on that computer. As stated you can have full read/write privileges on the SD card and change anything you want. However commands like passwd are running on your local computer and would effect its p...
by bjtheone
Fri Sep 06, 2019 7:57 pm
Forum: Beginners
Topic: Want to Telnet from Android to Multiple Raspberry Pi's
Replies: 12
Views: 819

Re: Want to Telnet from Android to Multiple Raspberry Pi's

According to their writeup on Google Play they do. This is also the app I use for SSH and find it works well. I still would not go down this route for doing a bunch of data collection, over and over from a bunch of Pis. My main use to to login and kill processes when things have gone sideways, and t...
by bjtheone
Fri Sep 06, 2019 2:31 am
Forum: Troubleshooting
Topic: Raspbian Buster and Eduroam
Replies: 3
Views: 890

Re: Raspbian Buster and Eduroam

Are you sure you are not running into a certificate problem? Have you followed your particular university's connection process? They often will have some sort of Configuration Assistance Tool. Which university?
by bjtheone
Fri Sep 06, 2019 2:23 am
Forum: Beginners
Topic: Want to Telnet from Android to Multiple Raspberry Pi's
Replies: 12
Views: 819

Re: Want to Telnet from Android to Multiple Raspberry Pi's

You might want to take a step back and explain what it is you are trying to achieve. Setting up Pis with telnet is easy. Connecting to a "bunch" of Pis using telnet from a Android device and doing much with all the connections with the real estate of a typical Android device may be less fun. Telnet ...
by bjtheone
Fri Sep 06, 2019 2:08 am
Forum: Beginners
Topic: Is 2.5A enough for the Pi 4?
Replies: 19
Views: 2432

Re: Is 2.5A enough for the Pi 4?

Who was this vendor ? Other purchasers would be advised to steer clear of those who engage in such practices. I purchased this from buypi.ca Though I must say that I am quite disappointed by the quality of care as they vendor chose to ignore my requests for a refund on the power supply to make thin...
by bjtheone
Fri Sep 06, 2019 1:49 am
Forum: Beginners
Topic: Raspberry Pi Bird Recognition
Replies: 6
Views: 1331

Re: Raspberry Pi Bird Recognition

We use Pi to do image processing for FRC robtics (find and track various vision targets and objects). I am not one of the vision mentors but I am fairly certain we are processing around 30 fps. Though for your application you just want to detect movement and trigger on that which is a simpler problem.
by bjtheone
Wed Sep 04, 2019 1:51 pm
Forum: General discussion
Topic: Pi 4 firmware, software stability improvements
Replies: 83
Views: 38114

Re: Pi 4 firmware, software stability improvements

So for once it is good to be old/insensitive.... I am quite happy with Youtube's performance on my 4B. Was not a happy camper with the 3B+ and broke things in many ways trying to get better performance out of Chromium. I also tend to watch YouTube in a window versus fullscreen, which may help.
by bjtheone
Wed Sep 04, 2019 1:47 pm
Forum: General discussion
Topic: DNS issues
Replies: 10
Views: 550

Re: DNS issues

Anytime I ask about something I am always told to get rid of jessie and upgrade to stretch. But that is simply not possible. I have spent months trying to do that, but there is always something that doesn't work. Always something. I am not kidding I literally spent months trying every possible solu...
by bjtheone
Wed Sep 04, 2019 11:41 am
Forum: Advanced users
Topic: Raspberry Pi4 EEPROM update package - beta
Replies: 57
Views: 19392

Re: Raspberry Pi4 EEPROM update package - beta

Even high-end motherboards for Intel compatible processors don't have a jumper to disable reflashing the BIOS. The costs of such a jumper are two-fold: the actual manufacturing costs and technical support for the clueless who are holding it wrong. I just spent yesterday afternoon resetting 50 such ...
by bjtheone
Tue Sep 03, 2019 7:04 pm
Forum: Raspberry Pi OS
Topic: STICKY: Q&A topic for heavy desktop enviroments
Replies: 3
Views: 434

Re: Q&A topic for heavy desktop enviroments

I would add Mate to the list. Lighter than Gnome or KDE but richer set of options than LXDE. I find it easier to tweak to what I want. Runs very well on the Pi 3B+ and 4B. Ubuntu Mate runs well on the 3B+. It is not available for the 4B yet. Raspbian Lite (Buster) + Mate installs cleanly and works v...
by bjtheone
Tue Sep 03, 2019 7:00 pm
Forum: Raspberry Pi OS
Topic: Bug: Setting Theme on RPi4 Raspbian Buster
Replies: 4
Views: 935

Re: Bug: Setting Theme on RPi4 Raspbian Buster

Find a theme that you like and add in the shortcut keys that you want. Any LXDE compatible theme should allow you to add in the shortcuts. Google for "adding terminal shortcuts to lxde theme" to get info on how to do this.
by bjtheone
Tue Sep 03, 2019 6:55 pm
Forum: Raspberry Pi OS
Topic: Raspbian /etc/apt/sources.list file contents
Replies: 2
Views: 2481

Re: Raspbian /etc/apt/sources.list file contents

After my RPi 3 B+ was left dormant for over two years, I have now brought it back to life and want to update its OS. The present version of Raspbian on it is 8 Jessie. I would like to update first to Stretch, then to Buster, but want to be sure I don't get off to a bad start. I would appreciate any...
by bjtheone
Tue Sep 03, 2019 6:41 pm
Forum: Raspberry Pi OS
Topic: STICKY: Buster bug report thread
Replies: 343
Views: 81484

Re: Buster bug report thread

ejolson wrote: ↑
Mon Sep 02, 2019 6:45 pm
 This is an upstream feature that appears designed to confuse new users who don't routinely customize vim with a .vimrc file. The easiest work around is to create an empty .vimrc file in your home directory.
An even easier solution is to not use vim...
by bjtheone
Tue Sep 03, 2019 5:53 pm
Forum: Advanced users
Topic: Under-voltage warnings
Replies: 209
Views: 368644

Re: Under-voltage warnings

As Peter pointed out the labels are fairly meaningless, beyond being a guideline to expectations. It was James that made those points. PeterO My apologies... More coffee obviously required. Irregardless it is a very valid and important point. Labels (shockingly) lie. If a company is willing to fake...
by bjtheone
Tue Sep 03, 2019 5:28 pm
Forum: Advanced users
Topic: Raspberry Pi4 EEPROM update package - beta
Replies: 57
Views: 19392

Re: Raspberry Pi4 EEPROM update package - beta

You can only do a manual update if you have root privileges when using the rpi-eeprom-update tool or are in the gpio group to do it directly using flashrom. https://www.raspberrypi.org/documentation/hardware/raspberrypi/booteeprom.md mentions a way of write protecting the EEPROM in hardware but the...

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