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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: 1137

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: 112

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

by mattmiller
Mon Aug 12, 2019 1:12 pm
Forum: Raspbian
Topic: [FeatureRequest]About menu item
Replies: 9
Views: 199

[FeatureRequest]About menu item

Just to make it easy to find out what version of Raspbian is running without having to google to find out what terminal command is needed to get the info
by mattmiller
Fri Aug 09, 2019 10:30 am
Forum: Raspbian
Topic: RaspberryPI Zero/W headless images
Replies: 8
Views: 286

Re: RaspberryPI Zero/W headless images

1) The board I run is Zero - the non W variant. Try to setup WiFi on this one with microUSB connector.

3) I think it boils down to the usecase - using those boards as standalone (no wifi/bt) headless seems not to be very popular thing.
I think this has squared the circle :)
by mattmiller
Fri Aug 09, 2019 10:10 am
Forum: Troubleshooting
Topic: Connecting to RaspPi using VNC without ".local"
Replies: 3
Views: 86

Re: Connecting to RaspPi using VNC without ".local"

Life's too short to worry about such things :)

I spent most of last year having to use ip address because of an issue with Windows networking so consider yourself lucky :)
by mattmiller
Mon Aug 05, 2019 2:09 pm
Forum: Networking and servers
Topic: Remote access to Raspberry SSH/VNC/Other
Replies: 2
Views: 117

Re: Remote access to Raspberry SSH/VNC/Other

I'm using Raspberry Pi 3 Model B+ which Im already accessing via Putty SSH and realVNC but realVNC is very limiting. Here is the thing, unless you pay them $400 you NEED to connect both devices(Pi and your PC) to the internet. First of all I'm asking for help to develop a LAN connection(without int...
by mattmiller
Sun Aug 04, 2019 10:27 am
Forum: Troubleshooting
Topic: Pi4 Buster - VNC headless resolution stuck on 1024x768 [SOLVED by manual intervention]
Replies: 5
Views: 180

Re: Pi4 Buster - VNC headless resolution stuck on 1024x768 [SOLVED by manual intervention]

Just as a followup - I just installed Buster on a PiZero and my old technique of just adjusting framebuffer height and width worked so this issue is just to do with Pi4
by mattmiller
Sat Aug 03, 2019 11:05 am
Forum: Troubleshooting
Topic: Pi4 Buster - VNC headless resolution stuck on 1024x768 [SOLVED by manual intervention]
Replies: 5
Views: 180

Re: Pi4 Buster - VNC headless resolution stuck on 1024x768 [SOLVED by manual intervention]

unfortunately raspi-config only gives a small number of options and no 16:9 options > 1280x720 apart from 1920x1080

Like I say, hopefully the devs will improve the situation in future
by mattmiller
Sat Aug 03, 2019 9:06 am
Forum: Troubleshooting
Topic: Pi4 Buster - VNC headless resolution stuck on 1024x768 [SOLVED by manual intervention]
Replies: 5
Views: 180

Re: Pi4 Buster - VNC headless resolution stuck on 1024x768

see here for what I did to get a higher resolution
https://www.raspberrypi.org/forums/view ... 6&t=246641

its not as good as what we had with Stretch and hopefully it will be improved upon in future
by mattmiller
Tue Jul 30, 2019 7:13 pm
Forum: Advanced users
Topic: Sanity Check: Multiple Raspberry Pis sharing data and tasked independently
Replies: 7
Views: 255

Re: Sanity Check: Multiple Raspberry Pis sharing data and tasked independently

I'd use MQTT to send the data between the two Pi - just run a mosquitto broker on one of them and link the two together with a short network cable
by mattmiller
Sun Jul 28, 2019 12:13 pm
Forum: Python
Topic: trying to import RPi.GPIO in module
Replies: 21
Views: 550

Re: trying to import RPi.GPIO in module

I'd suggest writing a simple program without classes and see if your servo moves as expected
by mattmiller
Wed Jul 24, 2019 2:59 pm
Forum: General discussion
Topic: can I remove the browser but still use scratch
Replies: 4
Views: 186

Re: can I remove the browser but still use scratch

Scratch 3 runs through the browser so removing browser will remove ability to use Scratch 3

The original Scratch and Scratch 2 do not need a browser to run
by mattmiller
Tue Jul 23, 2019 2:23 pm
Forum: Raspbian
Topic: Pi4 Buster VNC headless resolution
Replies: 1
Views: 163

Re: Pi4 Buster VNC headless resolution

I think I may have found how to get a reasonable compromise

I had a look at the GUI screen resolution changer and I noticed that if I select an hdmi_mode in config.txt , it becomes available as top option.

Then I select it and it changes to it :)

So I'm going to work with hdmi_mode=83 (1600 x 900)
by mattmiller
Tue Jul 23, 2019 2:06 pm
Forum: Raspbian
Topic: Pi4 Buster VNC headless resolution
Replies: 1
Views: 163

Pi4 Buster VNC headless resolution

Just got my Pi4 - booted with 2019-10-07 full and I can't set my headless screen resolution to anything close to what I'd like (1800 x 900 so that it nicely fits inside my Win10 screen res of 1980 x 1020) In old days - I just used to uncomment these in /boot/config.txt #framebuffer_width=1600 #frame...
by mattmiller
Sun Jul 21, 2019 9:21 pm
Forum: Other projects
Topic: Buy Faster Motors
Replies: 21
Views: 637

Re: Buy Faster Motors

Those little yellow motors come in many different RPM varieties so you may have one of the lower RPM ones
by mattmiller
Sat Jul 20, 2019 9:33 am
Forum: Automation, sensing and robotics
Topic: Alexa Routine to publish MQTT to be picked up by RPi
Replies: 9
Views: 380

Re: Alexa Routine to publish MQTT to be picked up by RPi

JFI
Unfortunately, node-red-alexa-local doesn't work with recent Alexa devices :(

The node says it is coming but hasn't been updated for 11 months so may be a legacy project

I'm using

node-red-contrib-alexa-home-skill

Its a bit more involved to setup but has proved quite reliable
by mattmiller
Fri Jul 19, 2019 8:09 pm
Forum: Python
Topic: Run a asyncio socket function a a thread
Replies: 21
Views: 1107

Re: Run a asyncio socket function a a thread

I've looked at MQQT. It's blocking. it can be setup to block or it can be setup to not block http://www.steves-internet-guide.com/loop-python-mqtt-client/ I added it recently to a python project and just set it to use its loop_start() threaded callback mechanism and the rest of my program carries o...
by mattmiller
Sun Jul 07, 2019 9:54 am
Forum: Beginners
Topic: Login Over Network Automatically
Replies: 2
Views: 106

Re: Login Over Network Automatically

If you use VNC to view a Pi over the network - you only need to type in username/password once and it will remember and auto login all subsequent times
by mattmiller
Fri Jun 28, 2019 2:26 pm
Forum: Beginners
Topic: Raspbian (latest) - tigerVNC not working?
Replies: 5
Views: 286

Re: Raspbian (latest) - tigerVNC not working?

Nope -we all all use the standard RealVNC server that comes as standard
by mattmiller
Tue Jun 18, 2019 3:10 pm
Forum: Raspbian
Topic: Static fallback when no DHCP server
Replies: 18
Views: 5730

Re: Static fallback when no DHCP server

Did mattmiller just post the same code block for his solution as his original posted code block that he claimed didn't work?
I think I did :)

Sometimes the gremlins do get you!
by mattmiller
Mon May 20, 2019 11:10 am
Forum: Beginners
Topic: Synaptic wont work on new install
Replies: 4
Views: 241

Re: Synaptic wont work on new install

does

Code: Select all

sudo synaptic-pkexec
get you anywhere?
by mattmiller
Thu May 09, 2019 4:40 pm
Forum: Wanted
Topic: 20 rasberry pi zero
Replies: 4
Views: 3360

Re: 20 rasberry pi zero

The only viable way for such a quantity is (as you've worked out) to make 20 single purchases for the PiZero and PiZeroW

Any UK distributor is allowed to sell you 20 PiZeroWH so that might be an option for you if no-one in USA will do so
by mattmiller
Mon Apr 29, 2019 1:36 pm
Forum: Networking and servers
Topic: Not able to pump Broadcast traffic from Pi
Replies: 2
Views: 188

Re: Not able to pump Broadcast traffic from Pi

JFI Some routers/switches suppress TCP/IP broadcasts so that can bring such projects to a halt
by mattmiller
Thu Apr 25, 2019 3:12 pm
Forum: Beginners
Topic: is dead 3V3 a widespread issue?
Replies: 15
Views: 687

Re: is dead 3V3 a widespread issue?

There has been an minor issue with shorting 3v3 to 5v causing the PMIC to die. We've done all that we can to prevent this sort of user error from damaging the board.
Does that mean changes have been made to to the original Pi3B+ design to mitigate this issue?

Is so , what changes have been made?

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