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by mattmiller
Sat Sep 21, 2019 10:40 am
Forum: Other projects
Topic: 360 degree human presence detection
Replies: 9
Views: 164

Re: 360 degree human presence detection

Ultrasonic is the only sensor with a narrow enough beam that also has distance sensing abilities.

I'd estimate you'd need 3 per side of bed but maybe 4

What are try to detect approaching the bed?
by mattmiller
Thu Sep 19, 2019 9:00 pm
Forum: Graphics, sound and multimedia
Topic: Soldering a speaker straight to the Raspberry Pi
Replies: 12
Views: 216

Re: Soldering a speaker straight to the Raspberry Pi

Not exactly sure where that would be on the layout of the board...
That would be under where the AV socket is once you've successfully removed it without damaging your Pi.....................
by mattmiller
Thu Sep 19, 2019 6:47 am
Forum: Troubleshooting
Topic: Pi rejects to reboot and always needs 3-30s cooldown
Replies: 6
Views: 186

Re: Pi rejects to reboot and always needs 3-30s cooldown

I just tried my Pi4 - I pulled the power lead out of the socket on the Pi and put it back in as fast as I could and it rebooted fine Did it again - fine But having said that - I normally do Generally with any electronic equipment you should always completely remove the power for about 10 seconds, ju...
by mattmiller
Mon Sep 16, 2019 9:53 pm
Forum: General discussion
Topic: Python 2 or Python 3 ...?
Replies: 8
Views: 369

Re: Python 2 or Python 3 ...?

Because it's not dead yet, and how quickly it is buried remains to be seen.
Yes - it'll probably be kept in cold storage for a LONG time!
by mattmiller
Mon Sep 16, 2019 8:16 am
Forum: General discussion
Topic: Python 2 or Python 3 ...?
Replies: 8
Views: 369

Re: Python 2 or Python 3 ...?

Why does Raspberry Pi community still insist on using the legacy Python 2 ?
Because of lot of us are dinosaurs and we'll still be using Python 2 until the heat death of the universe :)
by mattmiller
Mon Sep 16, 2019 7:38 am
Forum: Troubleshooting
Topic: [Stretch/Buster] Using LIRC with kernel 4.19.X and gpio-ir
Replies: 43
Views: 11052

Re: [Stretch/Buster] Using LIRC with kernel 4.19.X and gpio-ir

Thanks for the instructions - its working on my Buster install :) One slight bit of confusion is that I didn't understand what this bit was about If you do not use devinput, please execute the following command. Code: Select all sudo mv /etc/lirc/lircd.conf.d/devinput.lircd.conf /etc/lirc/lircd.conf...
by mattmiller
Fri Sep 13, 2019 6:46 am
Forum: Raspbian
Topic: How can i open my RaspberryPi Configs in VNC Desktop?
Replies: 8
Views: 480

Re: How can i open my RaspberryPi Configs in VNC Desktop?

From the VNC (tightvnc) window the pull down menu
Using the built in RealVNC server on my Pi4 and using RealVNC viewer from a Win 10 machine - it works fine for me
by mattmiller
Wed Sep 11, 2019 8:36 pm
Forum: Beginners
Topic: Was it always possible to control addressable LEDs with a Pi?
Replies: 5
Views: 128

Re: Was it always possible to control addressable LEDs with a Pi?

If you're making it to sell or it'll be installed somewhere difficult to access then put the level shifter in for peace of mind.
Sound advice :) I just use mine around the home
by mattmiller
Wed Sep 11, 2019 5:19 pm
Forum: Beginners
Topic: Was it always possible to control addressable LEDs with a Pi?
Replies: 5
Views: 128

Re: Was it always possible to control addressable LEDs with a Pi?

It used to be said in the early days but someone rose to the challenge and made it possible :)

Also, you'll find lots of articles saying you need level-shifters to drive them but I've never done so and not had a problem

I use WS2812 types
by mattmiller
Sun Sep 08, 2019 10:05 am
Forum: Beginners
Topic: Fried Raspberry pi 3 b+ OS to a new Raspberry Pi 3 b+
Replies: 2
Views: 93

Re: Fried Raspberry pi 3 b+ OS to a new Raspberry Pi 3 b+

But your old card will not work in a Pi4 unless you had upgraded it to Buster before the Pi3B+ failed

[edit]Should have said you'll be able to read files from the card but it won't boot[/edit]
by mattmiller
Sun Sep 08, 2019 9:59 am
Forum: Networking and servers
Topic: Make RPi show in Network List in Windows 8 or 10
Replies: 9
Views: 465

Re: Make RPi show in Network List in Windows 8 or 10

Good luck! Windows networking is a severe PITA. I intermittently but quite frequently can't see the other Windows 10 machines on my network in the Windows network display!
+1
More chance of winning in a game of Global Thermonuclear War :)
by mattmiller
Tue Sep 03, 2019 7:05 pm
Forum: Python
Topic: Speech to Text Engine
Replies: 8
Views: 369

Re: Speech to Text Engine

by mattmiller
Sat Aug 31, 2019 4:13 pm
Forum: Troubleshooting
Topic: Raspberry Pi zero W, arm_freq_min not working
Replies: 2
Views: 140

Re: Raspberry Pi zero W, arm_freq_min not working

purely for interest, what value can you get it up to on your Pi3B+ ?
by mattmiller
Thu Aug 29, 2019 1:35 pm
Forum: Raspbian
Topic: How can I remove login screen on Buster upgrade from Stretch
Replies: 3
Views: 210

Re: How can I remove login screen on Buster upgrade from Stretch

Ta - that fixed it :) You are aware, of course, that the move from Stretch to Buster is NOT recommended Nope - not seen anything anywhere about that :) TBH I normally don't upgrade from one version to another but I needed to test something out under Buster on this one so went for it. Just for anyone...
by mattmiller
Thu Aug 29, 2019 11:04 am
Forum: Raspbian
Topic: How can I remove login screen on Buster upgrade from Stretch
Replies: 3
Views: 210

How can I remove login screen on Buster upgrade from Stretch

I upgraded a Stretch install to Buster - all seems to work but I keep on getting a logon dialog when I reboot

Does anyone know how to get rid of it and go straight to desktop?
Capture.PNG
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by mattmiller
Tue Aug 27, 2019 12:21 pm
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 714

Re: MQTT without internet

MQTT is not a continuous protocol - it is for passing discrete messages
by mattmiller
Tue Aug 27, 2019 8:38 am
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 714

Re: MQTT without internet

but if i add one more RPi to system as a broker,
There is no need to add a 3rd Pi - the mosquitto broker can run on either of your two Pi and both Pi can use it to send/receive messages to each other.
by mattmiller
Mon Aug 26, 2019 10:33 am
Forum: Troubleshooting
Topic: RPI.GPIO and Pi4 issue ?
Replies: 14
Views: 1184

Re: RPI.GPIO and Pi4 issue ?

Hi and welcome to the forum :)

Unless your problem's identical to this one - best idea is to start your own thread and explain what problem your having
by mattmiller
Mon Aug 26, 2019 8:39 am
Forum: General discussion
Topic: Web Browser w/ VNC acccess
Replies: 5
Views: 1017

Re: Web Browser w/ VNC acccess

Most people use built-in (real) vncserver to remote into their Pi nowadays so that's probably explains lack of response.

JFI Why do you not want to use it?
by mattmiller
Fri Aug 23, 2019 3:32 pm
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 714

Re: MQTT without internet

Not convinced a switch is needed
I think 3 RPİ should be connected with 2 ethernet cable. Am i right?

:)
by mattmiller
Fri Aug 23, 2019 2:40 pm
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 714

Re: MQTT without internet

Can broker behave like a publisher at the same time? The broker is just a running program on one of the machines. Each machine listens and publishes messages to the broker - even the one the broker is running on. The broker does all the message routing I think 3 RPİ should be connected with 2 ether...
by mattmiller
Thu Aug 22, 2019 1:29 pm
Forum: Networking and servers
Topic: MQTT without internet
Replies: 18
Views: 714

Re: MQTT without internet

Yes - assuming your connecting the two using CAT ethernet cable, then you can just run a broker on one of them and use MQTT to pass data back and forth
by mattmiller
Wed Aug 21, 2019 4:42 pm
Forum: General discussion
Topic: Raspberry Pi 4 usb boot?
Replies: 303
Views: 51122

Re: Raspberry Pi 4 usb boot?

I installed NOOBS on a old 4GB micro SD I had lying around. Plugged in a USB3 SSD to my Pi4 and selected it as the drive to install on. /boot ends up on the micro SD, root on the SSD, boots and works fine no tinkering required.
Bloomin heck - finally NOOBS has a use #WhoKnew :)
by mattmiller
Fri Aug 16, 2019 8:02 pm
Forum: Troubleshooting
Topic: GPIO only has current at 5V pins (none at 3.3V pins)
Replies: 21
Views: 1634

Re: GPIO only has current at 5V pins (none at 3.3V pins)

The Pi 4B has a different power management circuit which is less susceptible to being killed by shorting the GPIO pins
Have you got a source for that info?
by mattmiller
Mon Aug 12, 2019 2:45 pm
Forum: Beginners
Topic: Is There A Way ? Sonic Pi 3.0.1
Replies: 3
Views: 320

Re: Is There A Way ? ..........

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