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by pidd
Tue Jun 23, 2020 10:38 am
Forum: General discussion
Topic: Changing the Raspberry Pi’s IP address
Replies: 6
Views: 382

Re: Changing the Raspberry Pi’s IP address

Pidd, could you please tell me more on setting up another IP address on wpa-supplicant.conf? I will be needing to do it via wpa-supplicant. pidd's reply is incorrect. wpa_supplicant.conf is not for setting IP parameters. They should be configured in dhcpcd.conf. Look at the comments and examples in...
by pidd
Tue Jun 23, 2020 10:34 am
Forum: General programming discussion
Topic: How to get UUID of boot partition
Replies: 14
Views: 989

Re: How to get UUID of boot partition

Why don't you change the UUID of the 2 partitions of the USB key so that they differ from the SD card? Then after boot, you get the UUID of / and you know which one booted, and this would solve your issue . Another simpler way is to set the SD card to have the email sent at boot automatically. No t...
by pidd
Tue Jun 23, 2020 12:07 am
Forum: General discussion
Topic: Raspberry pi 4 boot from ssd question
Replies: 14
Views: 1603

Re: Raspberry pi 4 boot from ssd question

It was promoted to stable last week. https://github.com/raspberrypi/rpi-eeprom/blob/master/firmware/release-notes.md I do wish there were more formal notification of changes and updates on these forum, after all there is an announcements topic. I thought I checked the images after the last update b...
by pidd
Mon Jun 22, 2020 11:49 pm
Forum: General discussion
Topic: Changing the Raspberry Pi’s IP address
Replies: 6
Views: 382

Re: Changing the Raspberry Pi’s IP address

A static IP address can be set in wpa-supplicant but I find it much better to set a static IP for it in your router, this will lock the pi's MAC address to an IP address.
by pidd
Mon Jun 22, 2020 10:11 pm
Forum: General programming discussion
Topic: How to get UUID of boot partition
Replies: 14
Views: 989

Re: How to get UUID of boot partition

It is going to be difficult, you can't tell by the mounts because they can be set to anything in fstab. I doubt there is a way of definitely telling which boot partition was used without customising them differently. If the USB boot boots to USB and the SD boots to the USB you probably can't tell be...
by pidd
Mon Jun 22, 2020 9:50 pm
Forum: General discussion
Topic: Raspberry pi 4 boot from ssd question
Replies: 14
Views: 1603

Re: Raspberry pi 4 boot from ssd question

The reason there is a beta is because there isn't a fully released USB boot. You can do a combination boot which requires an SD and USB, this could be considered fully supported as all the elements are on official release. When booted this way, it can be considered as fully operating from USB (other...
by pidd
Mon Jun 22, 2020 5:11 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: thunderbolt adapter
Replies: 8
Views: 346

Re: thunderbolt adapter

What would be the role of the pi? I think you'd be stretching its capabilities for a 32 channel high sample rate mixer capture or even a server.
by pidd
Mon Jun 22, 2020 4:48 pm
Forum: General discussion
Topic: Mozilla Thunderbird Versions
Replies: 5
Views: 358

Re: Mozilla Thunderbird Versions

A couple of us had a thread on this a couple of months(?) back. The other guy pulled the Debian (or at least a non PiOS version) of Thunderbird and it apparently did not have the slowness problem. Which is why I posted the above. For me at least the PiOS version works OK, after it is up an running....
by pidd
Mon Jun 22, 2020 4:23 pm
Forum: Other projects
Topic: Car pi question
Replies: 12
Views: 843

Re: Car pi question

You can put HATs above and below the pi if you use the appropriate header. Can you give me an example of what you mean? Thank you. I can't find the picture of what I meant but basically you have long pins going through the pi and put a header socket on the top of the lower HAT. Pin 1 will still go ...
by pidd
Mon Jun 22, 2020 11:45 am
Forum: General discussion
Topic: Mozilla Thunderbird Versions
Replies: 5
Views: 358

Re: Mozilla Thunderbird Versions

Brad Q wrote:
Mon Jun 22, 2020 7:46 am
I wonder if this is related to the extremely slow start up I have seen on the last few(?) Thunderbird updates(PiOS)?
I was surprised at that slowness which happens even before any accounts were created.
by pidd
Sun Jun 21, 2020 8:22 pm
Forum: Python
Topic: How to slice a string at the end of a word
Replies: 4
Views: 189

Re: How to slice a string at the end of a word

What language?
by pidd
Sun Jun 21, 2020 7:50 pm
Forum: Networking and servers
Topic: connecting to radio over eth0...nothing seen!
Replies: 6
Views: 326

Re: connecting to radio over eth0...nothing seen!

But the radio isn't on an ad-hoc network and its not on an AP network so nothing has a means to find a route to it? I could be wrong but the streaming won't happen until a connection is made? Otherwise the whole of the internet would have every stream flowing through it - not that I understand strea...
by pidd
Sun Jun 21, 2020 5:47 pm
Forum: Other projects
Topic: Car pi question
Replies: 12
Views: 843

Re: Car pi question

You can put HATs above and below the pi if you use the appropriate header.
by pidd
Sun Jun 21, 2020 4:20 pm
Forum: General discussion
Topic: How to power a raspberry pi with a PC PSU
Replies: 5
Views: 295

Re: How to power a raspberry pi with a PC PSU

One thing to be aware of though: the 5v power from the ATX PSU will be cut without warning when the PC shutsdown. You'll probably want to use a read only or run from RAM root filesystem on your Pi. The 5V standby line on ATX power supplies is usually rated for at least 2A but the motherboard usuall...
by pidd
Sun Jun 21, 2020 2:27 pm
Forum: Beginners
Topic: Connecting single flowmeter to two devices (an RPi + other)
Replies: 1
Views: 81

Re: Connecting single flowmeter to two devices (an RPi + other)

Simplest is the voltage divider with common negative, use 10K (or a bit higher) over 20k.

However If there is any length of wire involved, disconnection, dodgy supplies, inductive spikes etc then an opto-coupler is always good idea.
by pidd
Sun Jun 21, 2020 4:42 am
Forum: Troubleshooting
Topic: Qjackctl Help Needed.
Replies: 2
Views: 196

Re: Qjackctl Help Needed.

Try a2jmidid instead of a2midid?
by pidd
Sat Jun 20, 2020 9:42 pm
Forum: General discussion
Topic: python3 colour print
Replies: 4
Views: 163

Re: python3 colour print

Or if you want to use function you need to "return [expresion]" to pass the string back.

Code: Select all

def green_colour():
    Green_message = "\u001b[32m"
    return Green_message;
by pidd
Sat Jun 20, 2020 9:40 pm
Forum: General discussion
Topic: python3 colour print
Replies: 4
Views: 163

Re: python3 colour print

Try

Code: Select all

green_message = "\u001b[32m"
reset_message = "\u001B[0m"
print(green_message + "hello" + reset_message)
by pidd
Sat Jun 20, 2020 7:48 pm
Forum: Beginners
Topic: Stopping PWM signal
Replies: 2
Views: 124

Re: Stopping PWM signal

GPIO.cleanup changes the pin to input mode, the voltage will then be left floating to whatever the servo circuit is "pulling" it to. My bodge would be to put an external pull-down resistor, say 10K ohms and see if that holds it to 0V.
by pidd
Sat Jun 20, 2020 6:13 pm
Forum: Troubleshooting
Topic: Hot-plugging input device disturbs USB3 disk
Replies: 4
Views: 220

Re: Hot-plugging input device disturbs USB3 disk

Perhaps the supply capacitors inside the keyboard and mouse are a bit overrated causing a surge current when you plug them in. I used a wireless dongle setup for my keyboard as my plan C, and now I see the numerous benefits, even better than Bluetooth (plan B). I've just ordered another dongled keyb...
by pidd
Sat Jun 20, 2020 6:00 pm
Forum: General discussion
Topic: PIGPIO jitterless wave generation.
Replies: 38
Views: 1263

Re: PIGPIO jitterless wave generation.

When you have four cores running at 1.5GHz and you still can't expect real time performance for handling mere audio rates - crazy world! Its almost like a conscious decision has been made to purposely mess up anything remotely connected to real time operations.
by pidd
Sat Jun 20, 2020 3:37 pm
Forum: Troubleshooting
Topic: Raspberry Pi 4 not working after a few days
Replies: 4
Views: 205

Re: Raspberry Pi 4 not working after a few days

Try taking the board out of the heatsink, disconnect the fans, remove the SD card and watch the green LED to see it blinks when you power up.
by pidd
Sat Jun 20, 2020 4:18 am
Forum: Troubleshooting
Topic: No SSH to PI no internet connection, Wlan connection looks fine
Replies: 2
Views: 116

Re: No SSH to PI no internet connection, Wlan connection looks fine

I found it better to set the static IP at the router rather than in the pi, everything was a lot more stable after disconnections etc. Worst case was setting it static at both ends.
by pidd
Sat Jun 20, 2020 4:14 am
Forum: General discussion
Topic: Best OS for raspberry pi as a everyday desktop?
Replies: 50
Views: 13985

Re: Best OS for raspberry pi as a everyday desktop?

Who is keeping track of which websites are accessible on the Raspberry Pi computer? No one, this is called privacy. I'm not so sure about that. With the default settings Chromium chats back to google a fair bit which surprised me, I thought the difference between Chromium and Chrome was supposed to...
by pidd
Sat Jun 20, 2020 3:41 am
Forum: General discussion
Topic: Mozilla Thunderbird Versions
Replies: 5
Views: 358

Mozilla Thunderbird Versions

Stable releases Debian:Buster - 1:68.9.0-1 Debian:Buster:arrmhf - 1:60.9.0-1 :cry: RpiOS 1.68.8.0-1 :shock: I'm a bit curious how RpiOS got ahead of Debian? And will it happen again? I accidentally let my PC update to 68.9 which means I can't transfer my profile (and a few tens of thousands of email...

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