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by mattmiller
Sun Dec 15, 2019 3:48 pm
Forum: Raspbian
Topic: Show Raspberry Pi IP-address on PWR led on boot
Replies: 4
Views: 182

Re: Show Raspberry Pi IP-address on PWR led on boot

The ACT activity LED is too busy, so I chose the PWR led (sorry PiZero). I think I remember doing this a few years ago and once you've taken control of the green led on the PiZero - it doesn't get activity updates until the program hands back control And IIRC, the PiZero LED is inverted compared to...
by mattmiller
Fri Dec 13, 2019 10:40 am
Forum: Beginners
Topic: Distance between RPi and Microphone and Speaker
Replies: 1
Views: 53

Re: Distance between RPi and Microphone and Speaker

Top left and bottom right
Although long leads on either mic solution are not ideal - they want to be as short as possible
by mattmiller
Thu Dec 12, 2019 8:31 pm
Forum: General discussion
Topic: Ultrasonic sensor - trigger take picture
Replies: 1
Views: 61

Re: Ultrasonic sensor - trigger take picture

There is a lot of example out on t'internet but maybe best way is to use a library to do the work for you as it deals with a lot of issues that can arise if you roll your own code

https://pypi.org/project/Bluetin-Echo/
by mattmiller
Tue Dec 10, 2019 4:53 pm
Forum: General discussion
Topic: RPI3 - Chrome - DNS problems some days / times?
Replies: 5
Views: 177

Re: RPI3 - Chrome - DNS problems some days / times?

Because you've got 2 network connections - one to an Ethernet LAN and another WiFi to a router , your Pi computer is probably getting confused as to which one to use to access the internet as both of them are active Computers use a term called metric to decide which is the best path to use and norma...
by mattmiller
Mon Dec 09, 2019 8:33 am
Forum: Python
Topic: python3-ws4py on Buster
Replies: 1
Views: 75

Re: python3-ws4py on Buster

According to the github repositry - its not being actively maintained so your prob going to be out of luck :(

https://github.com/Lawouach/WebSocket-for-Python

Prob best to try and find another library that does what your after
by mattmiller
Sun Dec 08, 2019 10:22 pm
Forum: General discussion
Topic: RPI4 - No Audio from Headphone Jack
Replies: 5
Views: 157

Re: RPI4 - No Audio from Headphone Jack

Cheap £1 ones work fine
by mattmiller
Sun Dec 08, 2019 9:15 pm
Forum: Beginners
Topic: Using Ubuntu Server instead of Raspbian - Any downfalls?
Replies: 5
Views: 206

Re: Using Ubuntu Server instead of Raspbian - Any downfalls?

So I'm wondering if Raspbian has any specific package advantages or custom tweaks compared to other distros on that front?
All GPIO stuff is developed and tested on Raspbian

The fact that it works on other distro's is just fortunate
by mattmiller
Fri Dec 06, 2019 8:33 am
Forum: Beginners
Topic: Earliest image that will boot RPi-4
Replies: 6
Views: 210

Re: Earliest image that will boot RPi-4

Sorry - I didn't read all of your post that you can get it working!
by mattmiller
Thu Dec 05, 2019 10:14 pm
Forum: Other projects
Topic: WS2812 with or with out logic level shifter?
Replies: 3
Views: 163

Re: WS2812 with or with out logic level shifter?

But what I do do with long chains is power the 5V on strip directly from a hefty PSU and not try to drag several amps thru the Pi 5V pins
by mattmiller
Thu Dec 05, 2019 10:12 pm
Forum: Other projects
Topic: WS2812 with or with out logic level shifter?
Replies: 3
Views: 163

Re: WS2812 with or with out logic level shifter?

Got zillions of WS2812 connected to millions of Pi - never used a level converter

(Might have slightly exaggerated the numbers)
by mattmiller
Thu Dec 05, 2019 10:10 pm
Forum: Python
Topic: when someone connects wifi turn on a gpio
Replies: 7
Views: 208

Re: when someone connects wifi turn on a gpio

There used to be code on the net for a Pi to detect when an Amazon Dash button powered up and connected to a network - might be worth trying stuff like that out
by mattmiller
Thu Dec 05, 2019 10:03 pm
Forum: Beginners
Topic: Earliest image that will boot RPi-4
Replies: 6
Views: 210

Re: Earliest image that will boot RPi-4

Maybe you've developed a hardware problem with your HDMI lead?
by mattmiller
Thu Dec 05, 2019 9:58 pm
Forum: Beginners
Topic: Raspbian (latest) - tigerVNC not working?
Replies: 8
Views: 1034

Re: Raspbian (latest) - tigerVNC not working?

I think the raspberry pi foundation makes deals with some non-free software vendors to include their software in the raspbian repo or NOOBS, and they get paid for including their limited trial versions. RealVNC is one of these. I'd be much more inclined to believe that RealVNC supply RPi with their...
by mattmiller
Thu Dec 05, 2019 11:30 am
Forum: Troubleshooting
Topic: Im not entirely sure what happened to my raspberry pi zero W
Replies: 10
Views: 234

Re: Im not entirely sure what happened to my raspberry pi zero W

This may be the answer to non soldered GPIO pin headers
JFI They are excellent if just plugging an add-on board on once and leaving it but I tried a couple of them out and the pins have a tendency to come back out with repeated use
by mattmiller
Thu Dec 05, 2019 10:18 am
Forum: Troubleshooting
Topic: Im not entirely sure what happened to my raspberry pi zero W
Replies: 10
Views: 234

Re: Im not entirely sure what happened to my raspberry pi zero W

When connecting to a Windows PC nothing else should be plugged into the Zero I think they meant their Windows mouse and keyboard died on them to OP - I think you've got a short between your 5V and gnd (most probably between pins 4 and 6) If you can sort that out (and any other shorts) then it might...
by mattmiller
Thu Dec 05, 2019 8:27 am
Forum: Troubleshooting
Topic: I am trying to run sudo node app.js, but i get an error
Replies: 2
Views: 93

Re: node.js

I just tried running npm install noble --save on my Pi4 and it came up with a load of errors relating to bluetooth-hci-socket Looking at the project link, other people say it didn't work a year ago either So it probably an old project that used to work with earlier versions of Raspbian/node and the ...
by mattmiller
Tue Dec 03, 2019 5:24 pm
Forum: General discussion
Topic: Pi 4 Wasn't Booting. Here is my fix. (inserting the sd-card)
Replies: 52
Views: 1366

Re: Pi 4 Wasn't Booting. Here is my fix.

TBF to the OP the text
The Raspberry Pi is a small computer that can do lots of things. You plug it into a monitor and attach a keyboard and mouse.
doesn't say to put the a card into the slot (or even to plug in a power supply)

So maybe a small change wouldn't go amiss :)
by mattmiller
Mon Dec 02, 2019 8:49 am
Forum: General discussion
Topic: Raspberry Pi 4 is not a replacement for a real PC, (as it doesn't have Skype) sorry!
Replies: 72
Views: 2774

Re: Raspberry Pi 4 is not a replacement for a real PC, sorry!

I think the OP makes a legitimate point in that there doesn't seem to be a video conversation program for the Pi to enable it to talk users on other devices. But, like many other users, I gave up on Skype a number of years ago and use WhatsApp on my phone for video conferencing so it isn't a deal br...
by mattmiller
Tue Nov 26, 2019 7:40 am
Forum: Troubleshooting
Topic: Pi4: Chromium Browser Causes frequent hangs (5 seconds or so duration)
Replies: 15
Views: 440

Re: Pi4: Chromium Browser Causes frequent hangs (5 seconds or so duration)

I'm not an expert in this area but pauses in GUI desktop use on computers are usually caused by something else taking some time One of the most common reasons is that the OS has run out of RAM and is swapping stuff out from RAM to external storage etc This would explain the OP issue and might explai...
by mattmiller
Sun Nov 24, 2019 4:02 pm
Forum: General discussion
Topic: GPIO connection with ATmega328p
Replies: 9
Views: 246

Re: GPIO connection with ATmega328p

The OP says they are running the 328 from a 3V3 supply

So there isn't a 5V issue at stake here
by mattmiller
Sun Nov 24, 2019 3:24 pm
Forum: General discussion
Topic: GPIO connection with ATmega328p
Replies: 9
Views: 246

Re: GPIO connection with ATmega328p

The Atmel processor doesn't run at 3V3
It will run at 3V3 - just not at high clock speeds
by mattmiller
Sun Nov 24, 2019 10:53 am
Forum: Raspbian
Topic: Pi4 Buster VNC headless resolution
Replies: 7
Views: 1486

Re: Pi4 Buster VNC headless resolution

I've just put two and two together after realising what this meant https://www.raspberrypi.org/forums/viewtopic.php?p=1501760#p1501760 so I just commented out the #dtoverlay=vc4-fkms-v3d and set my framebuffers back to the size I like (so that the Pi VNC window sits just inside my main PC window res...
by mattmiller
Thu Nov 21, 2019 10:44 pm
Forum: General discussion
Topic: Where have the PiZeros gone?
Replies: 10
Views: 798

Where have the PiZeros gone?

So, there seems to be a shortage of PiZero in the shops in the UK .......
by mattmiller
Wed Nov 20, 2019 8:03 am
Forum: Raspbian
Topic: Set hostname from the /boot partition ?
Replies: 51
Views: 15545

Re: Set hostname from the /boot partition ?

I think your wish has been completely granted. Not yet is hasn't :) What we are after is the facility to simply add a script xxx.sh to the /boot partition and have that be run on first boot (preferably after all services are up and running) Jim's is the closest contender so far Interesting to find ...

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