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by Garvan
Thu Mar 05, 2020 9:56 am
Forum: Beginners
Topic: BlueDot with Raspberry Pi4 [SOLVED]
Replies: 10
Views: 750

Re: BlueDot with Raspberry Pi4

I was unable to get it to work, and I uninstalled BlueDot.

Sorry.
by Garvan
Mon Mar 02, 2020 1:45 pm
Forum: Beginners
Topic: Make the onboard LED blink using python - RP3B+
Replies: 7
Views: 486

Re: Make the onboard LED blink using python - RP3B+

Prettier?

Code: Select all

import os
import time

for j in range(10):
	os.system('echo 1 | sudo dd status=none of=/sys/class/leds/led0/brightness') # led on
	time.sleep(1)
	os.system('echo 0 | sudo dd status=none of=/sys/class/leds/led0/brightness') # led off
	time.sleep(1)
  
by Garvan
Sun Mar 01, 2020 8:31 am
Forum: Troubleshooting
Topic: is it worth trying to fix damaged RPi4B?
Replies: 2
Views: 164

is it worth trying to fix damaged RPi4B?

I guess I pluged and unpluged the HDMI cable one too many times, and I dislodged a tiny chip beside HDMI 1 (marked 5V=POX or something like that, the writing is tiny). It looks like an adjacent chip is damaged also, above and to the left in the attached photo. https://i.imgur.com/v8AUfwu.jpg Can pro...
by Garvan
Mon Feb 24, 2020 5:28 am
Forum: Beginners
Topic: Fasted Image recognition for raspberry pi
Replies: 2
Views: 175

Re: Fasted Image recognition for raspberry pi

It should be easy to follow some tutorials on QR code scanners in RPi+Python, and then based on this experience (checking, speed, performance etc.) decide if it will work for you. For example: https://www.pyimagesearch.com/2018/05/21/an-opencv-barcode-and-qr-code-scanner-with-zbar/ You might expect ...
by Garvan
Sun Feb 16, 2020 9:32 am
Forum: Beginners
Topic: BlueDot with Raspberry Pi4 [SOLVED]
Replies: 10
Views: 750

Re: BlueDot with Raspberry Pi4

Forris wrote:
Sat Feb 15, 2020 4:25 pm
From the BlueDot documentation, under 'Pair a Raspberry Pi and Android phone:

'You may receive errors relating to services not being available or being unable to connect: these can be ignored.'
I would happily ignore the error messages if it worked. I will remove it and start over. One more try.
by Garvan
Sat Feb 15, 2020 8:33 am
Forum: Beginners
Topic: BlueDot with Raspberry Pi4 [SOLVED]
Replies: 10
Views: 750

BlueDot with Raspberry Pi4 [SOLVED]

Hi, Have others succeed in getting BlueDot https://bluedot.readthedocs.io/en/latest/gettingstarted.html working with Raspberry Pi 4? This is my experience so far: Using a Huawei phone, I installed the application, I could not get the phone to pair using the GUI, because it reported my phone had no u...
by Garvan
Fri Feb 14, 2020 12:28 pm
Forum: Arch
Topic: Really slow wifi! (manjaro ARM)
Replies: 4
Views: 701

Re: Really slow wifi!

DougieLawson wrote:
Sun Feb 09, 2020 12:03 pm
iwlist channel | grep Current
Thank you. This is useful.
by Garvan
Wed Feb 12, 2020 9:07 am
Forum: Beginners
Topic: Raspberry pi 4 wi fi
Replies: 4
Views: 281

Re: Raspberry pi 4 wi fi

Assuming you have the default desktop, like I have: 1. Right click on the bar where the WiFi icon used to be, and select "Add / Remove Panel Items" 2. A dialog will open where you can select the "Panel Applets" tab, and press the "Add" then select "Wireless and Network" which should be near the bott...
by Garvan
Sun Feb 09, 2020 11:30 am
Forum: Arch
Topic: Really slow wifi! (manjaro ARM)
Replies: 4
Views: 701

Re: Really slow wifi!

sirozha wrote:
Sat Feb 08, 2020 4:07 pm
Shouldn’t we first find out if you are connecting on 2.4GHz or 5GHz?
My WiFi is configured for both. So how do I tell which I am using.
by Garvan
Sun Feb 09, 2020 7:00 am
Forum: Beginners
Topic: Latest version of raspbian (02-05) video with RPI 4b not working on Philips 24 inch ATSC TV
Replies: 7
Views: 526

Re: Latest version of raspbian (02-05) video with RPI 4b not working on Philips 24 inch ATSC TV

PS. Having a post like this that people with the same problem will find when searching is always useful.
by Garvan
Sun Feb 09, 2020 4:07 am
Forum: Beginners
Topic: Latest version of raspbian (02-05) video with RPI 4b not working on Philips 24 inch ATSC TV
Replies: 7
Views: 526

Re: Latest version of raspbian (02-05) video with RPI 4b not working on Philips 24 inch ATSC TV

If the bug relates to the underlying Debian base, then the Raspberry Pi maintainers might not give it high priority, (unless you are lucky and they have the same TV :)). If it is Raspberry Pi specific issue then the place to report it would be https://bugs.launchpad.net/raspbian Reporting bugs is no...
by Garvan
Tue Feb 04, 2020 2:27 am
Forum: Beginners
Topic: case - fan compatibility
Replies: 14
Views: 972

Re: case - fan compatibility

The red and white RPi 4 official case has no fan. Imperf3kt says above that it "can be modified to accept a fan with ease .." but while it may be easy for him, I don't have a suitable drill bit, so it is not easy for me. Judge for yourself, this is one video on YouTube https://www.youtube.com/watch?...
by Garvan
Mon Jan 27, 2020 9:32 am
Forum: Beginners
Topic: Can't remove Folder/Directory Even though Ownership Permissions are set
Replies: 5
Views: 346

Re: Can't remove Folder/Directory Even though Ownership Permissions are set

My guess is that there is a file in the directory that is owned by root.
by Garvan
Sun Jan 26, 2020 11:01 am
Forum: Beginners
Topic: Really slow wifi!
Replies: 1
Views: 256

Re: Really slow wifi!

I had issues with wifi dropping the connection when I enabled bluetooth with a fresh install around the new year. They were solved when I updated my installation. Instructions to update are given here: https://www.raspberrypi.org/documentation/raspbian/updating.md I think this is worth trying as a f...
by Garvan
Mon Jan 06, 2020 6:38 am
Forum: Beginners
Topic: baby steps, LED light
Replies: 5
Views: 262

Re: baby steps, LED light

Thanks to all who replied for your advice. I will start with the physical computing guide.
by Garvan
Sun Jan 05, 2020 10:12 am
Forum: Beginners
Topic: baby steps, LED light
Replies: 5
Views: 262

baby steps, LED light

Hi, I got myself a Raspberry Pi 4 over the new year holidays. I set it up and working without a hitch, as I have used Linux computers before. I looked at some YouTube videos to see how to wire up a LED, just to learn how the pins work, but am a bit puzzled about the very first video I chose to follo...

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