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by mattmiller
Wed Jun 03, 2020 9:25 am
Forum: General discussion
Topic: Pi Zero GPIO Reverser
Replies: 14
Views: 496

Re: Pi Zero GPIO Reverser

Maybe its just me but I'm not quite understanding what's the total practical idea here - especially with the ones on the left

Can you post a picture of the case in question with maybe paper prints of your PCB designs stuck on the pins?
by mattmiller
Thu May 28, 2020 8:34 am
Forum: Raspberry Pi OS
Topic: Goodbye Raspbian hello Raspberry Pi OS
Replies: 41
Views: 3911

Re: Goodbye Raspbian hello Raspberry Pi OS

Can we get an official abbreviation ASAP please? :)


RPiOS ?

RPIOS ?

RPOS ?

[edit]

And of course all the variants

RPiOS64 ? etc

and which will be the default - the 32bit or the 64 bit?

THE BIG QUESTIONS :)

[/edit]
by mattmiller
Tue May 19, 2020 9:06 pm
Forum: General discussion
Topic: Rpi solar power :)
Replies: 17
Views: 714

Re: Rpi solar power :)

It was only a bit of light ribbing (certainly by me) :)

Looks very good - so will it last 24 hours? - solar during the day and battery at night?

What projects did you have in mind for it?
by mattmiller
Mon May 18, 2020 10:09 pm
Forum: General discussion
Topic: Rpi solar power :)
Replies: 17
Views: 714

Re: Rpi solar power :)

I was going to ask where the plant was?
by mattmiller
Sun May 17, 2020 12:50 pm
Forum: Automation, sensing and robotics
Topic: Controlling multiple (maybe 100) stepper motors
Replies: 40
Views: 1400

Re: Controlling multiple (maybe 100) stepper motors

I'm guessing in this case that they just want to keep the idea a secret so that someone else doesn't do it first - but my crystal ball isn't any better than anyone else's - its just the "vibe" I'm getting :)
by mattmiller
Sat May 16, 2020 6:52 pm
Forum: Python
Topic: [Solved] Problem with MQTT
Replies: 5
Views: 192

Re: [Solved] Problem with MQTT

At least you've found out the reason for it :)
by mattmiller
Sat May 16, 2020 3:49 pm
Forum: Python
Topic: [Solved] Problem with MQTT
Replies: 5
Views: 192

Re: Problem with MQTT

Yep for some reason it silently fails if using old syntax and I've never found out why but it catches me out from time to time as well :)
by mattmiller
Sat May 16, 2020 2:35 pm
Forum: Python
Topic: [Solved] Problem with MQTT
Replies: 5
Views: 192

Re: Problem with MQTT

Try using

Code: Select all

def on_connect(client, userdata, flags, rc):
[edit]tidied up[/edit]
by mattmiller
Thu May 14, 2020 9:41 pm
Forum: General discussion
Topic: Largest SD card supported by PI hardware?
Replies: 21
Views: 1046

Re: Largest SD card supported by PI hardware?

I don't know what the biggest is but I use a 64GB on my Pi4 with no issues and no special config
by mattmiller
Sun May 10, 2020 10:16 am
Forum: Beginners
Topic: Possible to use Raspberry 4 image in Zero?
Replies: 2
Views: 113

Re: Possible to use Raspberry 4 image in Zero?

In 99 times out of 100 uses, the answer is yes :)
by mattmiller
Sun May 10, 2020 9:21 am
Forum: General discussion
Topic: piRoot: A way to run x86 Debian apps on Raspbian
Replies: 93
Views: 9070

Re: piRoot: A way to run x86 Debian apps on Raspbian

Just try it and report back to us :)
by mattmiller
Sat May 09, 2020 11:18 am
Forum: Networking and servers
Topic: Unable to connect to mosquitto Broker
Replies: 7
Views: 191

Re: Unable to connect to mosquitto Broker

That video is 3 years old That is a long time ago in computing especially on a Pi. I'd personally start again with a normal Raspbian install and simply add in mosquitto and Node-RED sudo apt-get install mosquitto mosquitto-clients https://nodered.org/docs/getting-started/raspberrypi Also, recommend ...
by mattmiller
Sat May 09, 2020 10:48 am
Forum: Automation, sensing and robotics
Topic: Controlling multiple (maybe 100) stepper motors
Replies: 40
Views: 1400

Re: Controlling multiple (maybe 100) stepper motors

JFI this company do a 4 stepper add-on board for a Pi

So you'd only need 25 Pi to do the job

Not in stock so may need to place a special order

https://www.amazon.co.uk/4tronix-PiStep ... B01GJS3C10
by mattmiller
Fri May 08, 2020 12:05 pm
Forum: Automation, sensing and robotics
Topic: Controlling multiple (maybe 100) stepper motors
Replies: 40
Views: 1400

Re: Controlling multiple (maybe 100) stepper motors

Having a cheap microcontroller per stepper, or covering a few steppers,
Yep - no need for power of a Pi
by mattmiller
Thu May 07, 2020 9:55 pm
Forum: Automation, sensing and robotics
Topic: Controlling multiple (maybe 100) stepper motors
Replies: 40
Views: 1400

Re: Controlling multiple (maybe 100) stepper motors

Interesting problem :) Try investigating using i2c port expanders https://www.microchip.com/wwwproducts/en/MCP23017 Specs say you can cascade 8 on each i2c bus Might have to use a few Pi (PiZero would do) connected together to get up the 400 pins you'd need to drive 100 steppers What's the project i...
by mattmiller
Mon Apr 27, 2020 4:38 pm
Forum: General discussion
Topic: Extreme browsing with pi?
Replies: 18
Views: 654

Re: Extreme browsing with pi?

Whoa, your Pi4? :shock: Buster is supposed to have Fake KMS enabled by default.
It might have done - I think I remember disabling it because I couldn't get it to display the custom res of 1900x900 that i was used to using over VNC
by mattmiller
Mon Apr 27, 2020 10:39 am
Forum: General discussion
Topic: Extreme browsing with pi?
Replies: 18
Views: 654

Re: Extreme browsing with pi?

Just tried what @Botspot said and enabled Fake KMS and great improvement in using TinkerCAD on my Pi4 so worth trying out on your Pi3
by mattmiller
Sun Apr 26, 2020 4:56 pm
Forum: General discussion
Topic: Extreme browsing with pi?
Replies: 18
Views: 654

Re: Extreme browsing with pi?

Is there any realistic way I can run these websites fairly well on a 3b+ or is it simply too much and not worth trying? Not really - you need more powerful hardware and more memory [edit - see later post] I've just tried Tinkercad out on my pi4 4gb machine and its not a slick experience even on tha...
by mattmiller
Sun Apr 26, 2020 4:23 pm
Forum: Other projects
Topic: [Project LIRC] Help needed - Receive IR command to relay several IR and network commands
Replies: 5
Views: 506

Re: [Project LIRC] Help needed - Receive IR command to relay several IR and network commands

Trying an old build of Raspbian I managed to get LIRC to work to accept IR input, but I can't work out how to get it to use the inputs to start a script etc, and I can't see how I can receive and send IR signals simultaneously. If you've switched to using Buster - you need to read thru the main LIR...
by mattmiller
Sat Apr 25, 2020 6:05 pm
Forum: General discussion
Topic: NodeRed very slow after update
Replies: 4
Views: 214

Re: NodeRed very slow after update

"What do you mean by "not to be editing Node-RED from a browser running on the same Pi" So - "normally" people install Node-Red on a Pi then use a browser from their main computer to edit the flows on the Pi. Obviously there are many scenarios but this is most common. So Node-RED runs quite happily ...
by mattmiller
Sat Apr 25, 2020 3:18 pm
Forum: General discussion
Topic: NodeRed very slow after update
Replies: 4
Views: 214

Re: NodeRed very slow after update

Hi The general advice is to not to be editing Node-RED from a browser running on the same Pi (and in 99% of cases people wouldn't be doing that anyway) This is because it runs slowly and generally uses up all resources on the Pi Especially on a 512MB machine like the Pi3A+ So, I'd suggest that it po...
by mattmiller
Tue Apr 21, 2020 10:29 pm
Forum: Troubleshooting
Topic: Gpio-ir dosen't work properly Lirc send different signal every time
Replies: 10
Views: 340

Re: Gpio-ir dosen't work properly Lirc send different signal every time

As you can see with reading this thread (and others on same subject) using IR in Buster has issues but if you switch to using older versions (my two installs use Jessie) then it works great.
by mattmiller
Tue Apr 21, 2020 9:29 pm
Forum: Troubleshooting
Topic: Gpio-ir dosen't work properly Lirc send different signal every time
Replies: 10
Views: 340

Re: Gpio-ir dosen't work properly Lirc send different signal every time

In your other thread you said you were using Buster - are you seeing the same problem in both versions of Raspbian?
by mattmiller
Wed Apr 15, 2020 12:40 am
Forum: General discussion
Topic: Original Official Raspberry Pi 2 (not 3!) cases available anywhere?
Replies: 15
Views: 471

Re: Original Official Raspberry Pi 2 (not 3!) cases available anywhere?

@rhester72
If you don't mind publishing a contact address on here (email or twitter) I can arrange to send it to you
[edit] All sorted out off-piste with OP but they still need another one [/edit]

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